Wording removed by a change is shown struck through, as in the original. 123 changes, 158 other letters.
Changes made
Correct Fiat X1/9 level 1 brakes to reflect FP line
#40767 from Daniel Snow · Rule change · TB 26-10 (2026-10 Fastrack)
In FP Spec Lines, Fiat X-1/9 & Bertone 1300 (Prep. Level 1), change the brake specs as follows: "Brakes Std: (F&R) 227/(8.9) Disc Brakes Alt: (F&R) 257 (10.1)x12 (7) Disc (Lancia/Fiat) Brakes Std: (F&R) 227 (8.9) x 11 (.43) Disc Brakes Alt: (F&R) 257 (10.1) x 12 (.47) Disc" In FP Spec Lines, Fiat X-1/9 & Bertone (Prep. Level 1), change the brake specs as follows: "Brakes Std: (F&R) 227/(8.9) Disc Brakes Alt: (F&R) 257 (10.1)x12 (7) Disc (Lancia/Fiat)
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Brakes Std: (F&R) 227 (8.9) x 11 (.43) Disc Brakes Alt: (F&R) 257 (10.1) x 12 (.47) Disc" In HP Spec Lines, Fiat X-1/9 1300 (Prep. Level 1), change the brake specs as follows: "Brakes Std: (F) 226/(8.9) Disc (R) 226/(8.9) Disc Brakes Alt: (F & R Lancia) 10.0 x .40 Disc Brakes Std: (F&R) 227 (8.9) x 11 (.43) Disc Brakes Alt: (F&R) 257 (10.1) x 12 (.47) Disc" In HP Spec Lines, Fiat X-1/9 1300 (Prep. Level 1/2), change the brake specs as follows: "Brakes Std: (F&R) 227mm/(8.9) Disc Brakes Std: (F&R) 227 (8.9) x 11 (.43) Disc Brakes Alt: (F&R) 257 (10.1) x 12 (.47) Disc"
Fiat x1/9 1300 Level 1 and or 2 Intake Manifolds
#40830 from Daniel Snow · Rule change · TB 26-10 (2026-10 Fastrack)
In FP spec lines, Fiat X-1/9 & Bertone 1300 (Prep. Level 1), add the following wording to the Drivetrain Notes section: "Intake manifold part numbers 128BS and 128AS are permitted." In HP spec lines,Fiat X-1/9 1300" (Prep Level 1), add the following wording to the Drivetrain Notes section: "Intake manifold part numbers 128BS and 128AS are permitted."
Mini Cooper Compression Ratio
#40517 from Brian Linn · Rule change · TB 26-08 (2026-08 Fastrack)
In HP Spec Lines, Mini Cooper (02-06) (includes 05-08 convertible), change Drivetrain Notes as follows: "Comp. ratio 10.6 11.0:1, Valve lift .450”
#40322 from Thomas Beverly · Rule change · TB 26-07 (2026-07 Fastrack)
In HP, classify Honda Civic CX/DX/LX (96-00):
1275 Midget/Sprit Alternate intake manifold E/O
#40370 from Production Committee · Rule change · TB 26-07 (2026-07 Fastrack)
In HP Spec Lines, Austin-Healey Sprite Mk I, II, III, IV MG Midget Mk I, II, III, IV & 1500, change Drivetrain Notes as follows: "(2) 1.25” SU w/ no modifications (2) 1.5” SU w/ no modifications (on alternate manifold) Valves: (I) 33.0/(1.30) (E) 29.5/(1.16) Comp. ratio 12.0:1, Valve lift .450” Trans. Speeds: 4 Drivetrain Level 2 preparation only. Listed spec line weight does not change with alternate or stock transmission.
A specification table follows in the original; it is not shown here.
HP Honda Civic (92-95)
#40464 from Production Committee · Rule change · TB 26-07 (2026-07 Fastrack)
In HP, make the following changes to the "Honda Civic DX (92-95)" spec line: Spec Line Name: "Honda Civic DX/LX (92-95)" Wheels: "13x7 15x7" Wheelbase: "2/ 4 door: 2621/(103.2) 2/3 door: 2573/(101.3)" Weight: "2420 2350"
Honda S2000 Hardtop
#40138 from John Wilson · Rule change · TB 26-06 (2026-06 Fastrack)
In EP Spec Lines, Honda S2000, add to Chassis Notes the following: "Mugen hardtop (P/N 0000-04-2312), or an aftermarket equivalent, is permitted."
Miata track width - errors and omissions
#39976 from Production Committee · Rule change · TB 26-05 (2026-05 Fastrack)
In EP Spec Lines, Mazda MX-5 / Miata (94-97), change Track (F/R) mm/(in.) as follows: Track (F/R) mm/(in.): "1483/1509 (58.4/59.4) 1516/1534(59.7/60.4)"
Triumph GT6 Spec Change.
#40098 from Anthony Parker · Rule change · TB 26-05 (2026-05 Fastrack)
In EP Spec Lines, Triumph GT6, change the "Drivetrain Notes" as follows: "(2) auto-type w/44 45mm choke(s)"
Request to Update E30 BMW Throttle Body Diameter Verbiage
#39363 from Tim Schreyer · Rule change · TB 26-01 (2026-01 Fastrack)
In EP Spec Line BMW 325i/is E30 (84-91), change Drivetrain Notes as follows: "Fuel Injection, TB: 60mm"
TR2 Notes E&O
#39180 from Anthony Parker · Rule change · TB 25-12 (2025-12 Fastrack)
In EP Spec Lines, Triumph TR2, 3, 3A, 4, 4A, TR4, TR4A, IRS, make the following change to the Notes: "Front apron assembly may be made of alternate material. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990 lbs. Laycock overdrive, may use 5 speed gearbox without overdrive."
Balance of Power
#39187 from Jim Simaras · Rule change · TB 25-12 (2025-12 Fastrack)
In EP Spec Lines, make the following changes to Restrictors: BMW Z3 2.5L: "52mm 50mm Flat Plate Intake Restrictor" BMW Z3 2.8L (97-00): "55mm 53mm Flat Plate Intake Restrictor" BMW 328i/is E36 (96-99): "58mm 55mm Flat Plate Intake Restrictor" BMW 328i/ci E46 (01-06): "58mm 55mm Flat Plate Intake Restrictor" BMW 325i/is (E46) (01-06): "56mm 53mm Flat Plate Intake Restrictor" BMW 325is M-Technic (1994): "56mm 53mm Flat Plate Intake Restrictor" BMW 325i/is E-36 (92-95): "56mm 53mm Flat Plate Intake Restrictor"
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In EP Spec Lines, BMW Z3 2.5L, change Weight as follows: "2500 2550 *2563 2614 **2625 2678"
Please Lower Weight of 280Z
#38871 from Matthew Miller · Rule change · TB 25-09 (2025-09 Fastrack)
In EP Spec Lines, Nissan 280Z, change Weight (lbs) as follows: "(Effective 11/1/2025) 2560 2400 *2624 2460 **2688 2520"
Miata Weight Adjustment Follow Up
#38949 from Don Tucker · Rule change · TB 25-10 (2025-10 Fastrack)
In EP Spec Lines, Mazda MX-5 / Miata 1.8L (90-97), Effective 11/1/2025 make the following weight change: "2150 2125"
Weight Break for 1098 Midget / Sprite
#38970 from Kendall Jones · Rule change · TB 25-10 (2025-10 Fastrack)
In HP Spec Lines, Austin-Healey Sprite/Midget 1098cc, Effective 11/1/2025make the following weight change: "1630 1550"
HP Volvo 142 spec omission
#38994 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)
In HP Spec Lines, Volvo 142/142E P-1800 Engine, Effective 11/1/2025 add the following wording to Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .425”."
HP Mini DOHC 1.6
#38996 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)
In HP Spec Lines, Mini Cooper (07-13) (includes 09-15 convertible and 12-15 Coupe), Effective 11/1/2025 make the following changes to the Notes: "Compression ratio limited to 11.0:1, Valve lift limited to .450”.390"."
Add to Rabbit description
#39019 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)
In FP Spec Lines, make the following spec line correction: "Volkswagen Rabbit (Includes Convertible Cabriolet)" In HP Spec Lines, make the following spec line correction: "Volkswagen Rabbit 1588 (Includes Cabriolet)" "Volkswagen Rabbit 1715 (Includes Cabriolet)" "Volkswagen Rabbit 1780 (Includes Cabriolet)"
Clean-up 9.1.5.E.7e
#39025 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)
In GCR, Section 9.1.5.E.7., change as follows: "e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. Note that the “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear disc brakes under this rule. When converting from rear drum brakes to rear disc brakes: 1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on the vehicle’s spec line. 2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material. The standard and alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum brakes as stock
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from converting to rear disc brakes under this rule. 3. The “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes as stock from converting to rear disc brakes under this rule."
Add TB size to Ford Mustang (94-98) Spec Line
#39130 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)
In EP Spec Lines, Ford Mustang (94-98) add the following to the Fuel Injected Equipped Throttle Body Inside Diameter column: "60"
HP Plymouth Arrow spec omission
#38995 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)
In HP Spec Lines, Plymouth Arrow (76-80), add the following wording to Trans. Speeds(max): "4 or 5"
Add Wheel Diameter to Appendix G
#39008 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)
In Appendix G.2.3, change as follows: "Rim width and diameter are is absolute maximums."
Add TB ID tolerance to general Prod rules
#39009 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)
In GCR, Section 9.1.5.E., change as follows: 9.1.5.E.1.b.4: "The inside dimensions of the throttle body casting/housing (as measured at the throttle butterfly) must remain stock (tolerance of +/-.25mm), but the throttle body can otherwise be ported and polished." 9.1.5.E.2.b.4: "The inside dimensions of the throttle body casting/housing and all dimensions of the throttle butterfly must remain stock (tolerance of +/-.25mm)."
In HP Spec Lines "Ford Festiva (88-93)" change as follows: Weight: "1700 1600 *1743 1640 **1785 1680" Notes: "Compression ratio limited to 10.5 11.0:1. Valve lift limited to .450”."
Request Competition Adjustment to BMW Z3 2.5L
#37120 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)
In EP Spec Lines, change Notes as follows: BMW Z3 2.5LL "(Effective 3/1/2025) 56mm 52mm Flat Plate Intake Restrictor is required." BMW Z3 2.8L (97-00): "(Effective 3/1/2025) 59mm 55mm Flat Plate Intake Restrictor is required." BMW 328i/is E36 (96-99): "(Effective 3/1/2025) 62mm 58mm Flat Plate Intake Restrictor is required." BMW 328i/ci E46 (01-06): "(Effective 3/1/2025) 62mm 58mm Flat Plate Intake Restrictor is required." BMW 325i/is E46 (01-06): "(Effective 3/1/2025) 60mm 56mm Flat Plate Intake Restrictor is required." BMW 325i/is E-36 (92-95): "(Effective 3/1/2025) 60mm 56mm Flat Plate Intake Restrictor is required." BMW 325is M-Technic (1994): "(Effective 3/1/2025) 60mm 56mm Flat Plate Intake Restrictor is required."
Interpretation of Production Rules on Mirrors
#37235 from Lawrence Slivinski · Rule change · TB 25-03 (2025-03 Fastrack)
In GCR, add new rule as Section 9.1.5.E.10.f: "Any interior or exterior mirror(s) that meets rule 9.3.36 may be used."
Weight Reduction for Honda S2000
#37466 from Michael Unger · Rule change · TB 25-03 (2025-03 Fastrack)
In EP, Spec Lines make the following weight changes:
A specification table follows in the original; it is not shown here.
Mazda 1999 Miata 1.8L
#37488 from Joe Carr · Rule change · TB 25-03 (2025-03 Fastrack)
In EP Spec Lines, make the following weight change: Mazda MX-5 /Miata (99-05): "2150 2100 *2204 2153 **2258 2205"
In EP Spec Lines, add to Notes as follows: BMW Z3 2.5LL "(Effective 2/21/2025) 52mm Flat Plate Intake Restrictor is required." BMW Z3 2.8L (97-00): "(Effective 2/21/2025) 55mm Flat Plate Intake Restrictor is required." BMW 328i/is E36 (96-99): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required." BMW 328i/ci E46 (01-06): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required." BMW 325i/is E46 (01-06): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required." BMW 325i/is E-36 (92-95): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required." BMW 325is M-Technic (1994): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line
#37119 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)
In EP SPEC LINES, BMW 325i/is (E30) (84-91), change Weight as follows: "2200 2150 *2255 2204 **2310 2258"
Triumph GT6 Adjustments
#37112 from Anthony Parker · Rule change · TB 24-12 (2024-12 Fastrack)
In EP Spec Lines, make the following changes in the "Triumph GT6" spec line: Carburetor No. & Type: (2): "1.5” 1.75" Auto-type carburetor(s)" Notes: "Two (2) 1.75” auto-type carburetors @ 1940 lbs. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990 lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive."
In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1275cc, change Notes as follows: "(Effective 11/1/2024) Compression ratio limited to 11 12.0:1" In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1098cc, change Notes as follows: "(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"
NA Miata Track Width Correction
#36902 from Production Committee · Rule change · TB 24-11 (2024-11 Fastrack)
In EP Spec Lines, classify Nissan 300ZX (84-89), as follows:
A specification table follows in the original; it is not shown here.
RX7 1993 and Up Request In EP Spec Lines, classify
#36031 from Edward Zabinski · Rule change · TB 24-06 (2024-06 Fastrack)
Mazda RX-7 (92-97) as follows:
A specification table follows in the original; it is not shown here.
Clean-up Multiple EP RX-8 Spec Lines In EP
#36156 from Production Committee · Rule change · TB 24-06 (2024-06 Fastrack)
Spec Lines, make the following changes to the two Mazda RX-8 spec lines. Remove spec line entirely: Mazda RX-8 (04-11) Remove the wording "alternate": Mazda RX-8 (04-11)(alternate) Spec Mazda (SM/SMX) None.
GCR Correction - Redundant HP Spec Lines
#35623 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)
In HP Spec Lines, delete the following redundant spec lines in their entirety: Spec line #10 - VW Rabbit Cabriolet 1780 Spec line #3 - VW Scirocco 1588 Spec line #4 - VW Scirocco 1780 (8-valve) (83-88) Spec line #5 - VW Scirocco 1588
In HP, make the following weight change: Honda Civic 1.5 (88-91) “2245 2175 *2301 2229 **2357 2284”
Request to Review Z3 2.5 Spec Line
#35073 from Tim Schreyer · Rule change · TB 24-01 (2024-01 Fastrack)
In EP spec line, BMW Z3 2.5L, change weight as follows: "2450 2500 *2511 2563 **2573 2625"
Miata Alternate Head
#35253 from Don Tucker · Rule change · TB 24-01 (2024-01 Fastrack)
In EP Spec Lines, Mazda MX-5 /Miata 1.8L (90-97), change weight as follows: "2200 2150" Mazda MX-5 /Miata (94-97) "2035 2000 *2086 2050 **2137 2100"
Triumph GT6 Adjustments
#35255 from Anthony Parker · Rule change · TB 24-01 (2024-01 Fastrack)
In EP spec line, Triumph GT6, make the following change in the Notes section: "Two (2) 1.75” auto-type carburetors @ 1970 40 lbs. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990 lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive. Three (3) Weber 40mm DCOE w/28mm venturi on individual runner manifold @ 2020 lb."
Honda S2000 throttle body
#35272 from Aaron Johnson · Rule change · TB 24-01 (2024-01 Fastrack)
In EP spec line, Honda S2000, make the following changes to its spec line: Fuel Injected Equipped Throttle Body Inside Diameter: "62 64" Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .500”. An adaptor plate can be used to mount the 62mm throttle body from '00-05 to the '06-09 intake manifold. The adaptor plate can be no more than 1.25" thick, and its bore must not exceed the "Fuel Injected Equipped Throttle Body Inside Diameter" maximum spec of 64mm."
Correction within Triumph TR8 Spec Line
#35315 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)
In EP spec line, Triumph TR8 (78-81), move the "Dry sump allowed" wording to the appropriate location as follows: Carburetor. No. & Type: “Zenith Stromberg carbs or fuel injection. Dry sump is allowed.” Notes: “Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. Dry sump is allowed.”
Correction to EP 924S/944 Spec Line
#35317 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)
In EP spec line, Porsche 944/924S 2.5L (2V) / 2.7L (2V) (83-89), change Weight as follows:
A specification table follows in the original; it is not shown here.
Porsche 944/924S Rule Change Request
#35002 from Adam Achepohl · Rule change · TB 23-12 (2023-12 Fastrack)
In EP Spec Lines, delete the Porsche 944/924S 2.5L (2V) (83-88) spec line entirely, and create a new spec line for Porsche 944/924S 2.5L(2V) 2.7L(2V) (83-89) as follows:
A specification table follows in the original; it is not shown here.
Triumph GT6 Adjustments
#35054 from ANTHONY PARKER · Rule change · TB 23-12 (2023-12 Fastrack)
In EP Spec Lines, Triumph GT6, change weight as follows: "1830 1800"
Hub Note Clean Up In EP TR8 Spec Line
#34649 from Jeff young · Rule change · TB 23-09 (2023-09 Fastrack)
In the EP Spec Lines, Triumph TR8 (78-81), remove the following wording from Notes: "Alternate front hubs are allowed provided they are of the same external dimensions as stock and weigh no less than the stock hubs."
Triumph GT6 Adjustments
#34662 from ANTHONY PARKER · Rule change · TB 23-09 (2023-09 Fastrack)
In EP Spec Lines, Triumph GT6, change Carburetor. No. & Type as follows: "(2) 1.5” SU or Stromberg Auto-type carburetor(s)"
Triumph GT6 Adjustments: Brakes
#34663 from ANTHONY PARKER · Rule change · TB 23-09 (2023-09 Fastrack)
In EP Spec Lines, Triumph GT6, add the following to Brakes Alt.: mm/(in.): "(F) Calipers & discs from TR-6 (std. or alt)"
Correct Intake Valve Size on 1500cc Midget/Spitfire
#34419 from Production Committee · Rule change · TB 23-06 (2023-05 Fastrack)
In FP Spec Lines, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change Intake Valve Size as follows: "(I) 36.65.3/(1.44)" In FP Spec Lines, Triumph Spitfire Mk. IV & 1500, change Intake Valve Size as follows: "(I) 36.65.5/(1.440)" In HP Spec Lines, Triumph Spitfire 1500, change Intake Valve Size as follows: "(I) 36.65.5/(1.440)" In HP Spec Lines, Triumph Spitfire Mk. III & IV 1500, change Intake Valve Size as follows: "(I) 36.65.5/(1.440)"
In EP Spec Lines, Porsche 914 - 6 2.0L, change Valves IN & EX mm/(in.) as follows: "(I) 41.9 2.0/(1.65) (E) 38.1 0/(1.50)"
Investigate Parity of Z3
#33343 from Tim Schreyer · Rule change · TB 23-01 (2023-01 Fastrack)
Effective 4/1/2023 In EP Spec Line BMW Z3 2.5L, change Notes as follows: "58 56mm Flat Plate Intake Restrictor is required with both stock or alternate throttle body."
Revise 79-85 RX7 Brake Spec Line Allowance
#33293 from David Mead · Rule change · TB 23-01 (2023-01 Fastrack)
In EP Spec Line, Mazda RX-7 (12A/13B) (79-85), change Notes as follows: "Level 1 dry sump, intake manifold porting permitted. Alternate multi-piece hub and rotor allowed provided they are of the same dimensions as original and weigh a minimum of 10.2 lbs. 13B (only): Any 13B rotor housing and any non-turbo 6-port side and/or intermediate housing permitted. Use of differential from 94-97 Mazda MX-5/ Miata permitted."
Request alternate carburetors for EP 280z
#33405 from Joe Harlan · Rule change · TB 23-01 (2023-01 Fastrack)
In EP Spec Lines, Nissan 280Z, change Carburetor. No. & Type as follows: "(2) Hitachi-SU (1bbl) 46mm throttle bores, or fF uel injection."
In EP Spec Lines, Mazda RX-2, change Carburetor. No. & Type as follows: "(1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2 bbl w/ 42mm choke(s) on a “dual-y” manifold”, or (1) 2 bbl fuel injected throttle body w/42mm choke(s) on a “dual-y” manifold." In EP Spec Lines, Mazda RX-3 & 3SP (72-78), change Carburetor. No. & Type as follows: "(1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2 bbl w/ 42mm choke(s) on a “dual-y” manifold”, or (1) 2 bbl fuel injected throttle body w/42mm choke(s) on a “dual-y” manifold." In EP Spec Lines, Mazda RX-4 (74-78), change Carburetor. No. & Type as follows: "(1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2 bbl w/
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42mm choke(s) on a “dual-y” manifold” In EP Spec Lines, Mazda RX-7 (12A/13B) (79-85), change Carburetor. No. & Type as follows: "12: (1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2 bbl w/ 42mm choke(s) on a “dual-y” manifold”, or (1) 2 bbl fuel injected throttle body w/42mm choke(s) on a “dual-y” manifold. 13B: (1) Auto-type 2 bbl w/ 42mmchoke(s) on a “dual-y” manifold, (1) 2 bbl fuel injected throttle body w/42mm choke(s) on a “dual-y” manifold, or stock 13B fuel injection."
In EP Spec Lines, Mazda RX-2, change Weight as follows: "1950 1900 *1999 1948 **2048 1995" In EP Spec Lines, Mazda RX-3 & 3SP (72-78), change Weight as follows: "1950 1900 *1999 1948 **2048 1995"
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In EP Spec Lines, Mazda RX-4 (74-78), change Weight as follows: "2100 2050 *2153 2101 **2205 2153"
Request TR8 Dry Sump Allowance
#33460 from Jeff Young · Rule change · TB 23-01 (2023-01 Fastrack)
In EP Spec Lines, Triumph TR8 (78-81), add to Notes as follows: "Dry sump is allowed."
Review Limited Prep Port Matching Rules
#33600 from Production Committee · Rule change · TB 23-01 (2023-01 Fastrack)
In Production Category Specifications, GCR section 9.1.5.E.2.e.5., change as follows: "Cylinder head ports may be matched to the intake and exhaust manifolds to a depth of no more than 1 inch from the port mating surface."
280ZX Classification Request
#33611 from Bill Coffey · Rule change · TB 23-01 (2023-01 Fastrack)
In EP Spec Lines, add a spec line as follows:
A specification table follows in the original; it is not shown here.
Request to classify VW New Beetle 2.5L in EP
#32725 from G. Metcalf · Rule change · TB 22-09 (2022-09 Fastrack)
In EP Spec Lines, classify Volkswagen New Beetle (06-11) as follows:
A specification table follows in the original; it is not shown here.
Request Rotary Injection on Dual Y manifold
#32775 from James Lindenthal · Rule change · TB 22-09 (2022-09 Fastrack)
Effective November 1, 2022, in EP Spec Lines, change Carburetor. No. & Type as follows: Mazda RX-7 (12A/13B) (79-85): "12A: (1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold or (1) Auto-type 2 bbl w/42mm choke(s) on a “dual-y” manifold. 13B: (1) Auto-type 2 bbl w/ 42mm choke(s) on a “dual-y” manifold, (1) 2 bbl fuel injected throttle body w/ 42mm choke(s) on a “dual-y” manifold, or stock 13B fuel injection." Mazda RX-7 (13B) (86-91): "(1) Auto-type 2 bbl w/ 42mm choke(s) on a “dual-y” manifold, (1) 2 bbl fuel injected throttle body w/ 42mm choke(s) on a “dual- y” manifold, or stock 13B fuel injection."
Request for Corrado Stroke & Displacement Correction
#32985 from Douglas Hedges · Rule change · TB 22-09 (2022-09 Fastrack)
In EP Spec Line, VW Corrado (92-95), change as follows: Bore x Stroke mm/(in.): "81.0 x 90.4 3 (3.19 x 3.56)" Displ. cc/(ci) (nominal): "278 92"
Subaru BRZ Model Years
#32500 from Steve Gaetjens · Rule change · TB 22-06 (2022-06 Fastrack)
In EP Spec Lines, Subaru BRZ (2013), change title changes: "Subaru BRZ (13 - 20)" In EP Spec Lines, Toyota Scion FR-S (2013), change title changes: "Toyota 86 / Scion FR-S (13 - 20)"
EP MX-5 Global Cup Car
#32218 from Production Committee · Rule change · TB 22-03 (2022-03 Fastrack)
Effective 05/01/2022 In EP Spec Lines, Mazda MX-5 Global Cup (16-22), change as follows: Weight (lbs): "see notes 2400" Notes: "Car preparation is limited to what is permitted by the MX-5 Global Cup rules, and the car must meet all MX-5 Global Cup rules except as otherwise indicated within this spec line. Competitors must have the current MX-5 Global Cup rules in their possession and present them upon request. Sequential gearbox is allowed with +150lbs."
Please Class BMW 128i in EP
#32370 from Mark Uhlmann · Rule change · TB 22-05 (2022-04 Fastrack)
In EP Spec Lines, classify the BMW 128i (08-13) as follows:
A specification table follows in the original; it is not shown here.
Inconsistency in Body Work Descriptions
#32396 from Production Committee · Rule change · TB 22-05 (2022-04 Fastrack)
In Production Category Specifications, GCR Section 9.1.5.E.9.a.12 change as follows: "Open cars must remove convertible soft tops and all attaching bracketry and hardware. If the stock windshield is retained, OEM and aftermarket hardtops are allowed. Aftermarket hardtops must retain OEM appearance in all exterior profiles, and carbon fiber construction is not allowed. Any hardtop must be attached by positive fasteners."
Mazda RX8 with 13b Rotary
#32170 from John Warren · Rule change · TB 22-04 (2022-04 Fastrack)
In EP Spec Lines, Mazda RX-8 (04-11) (alternate), make the following changes to Carburetor. No. & Type: "Renesis: Fuel Injection. 13B: d (1) Auto-type 2 bbl carb w/ 42mm choke(s) on a “dual-y” manifold, (1) 2 bbl fuel injected throttle body w/ 42mm choke(s) on a “dual-y” manifold, or stock 13B fuel injection."
Request Idle control valve clarification
#32178 from Joe Camilleri · Rule change · TB 22-04 (2022-04 Fastrack)
In Production, GCR Section 9.1.5.E.1.b.9, add the following: "Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed and any resulting openings blocked off. A mechanical stock/original idle control device can be replaced with an electronic stock/original type of idle control device, with the original mechanical idle ports in the throttle body blocked off." In Production, GCR Section 9.1.5.E.2.b.9, add the following: "Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed and any resulting openings blocked off. A mechanical stock/original idle control device can be replaced with an electronic stock/original type of idle control device, with the original mechanical idle ports in the throttle body blocked off."
EP Adjustments
#31858 from Production Committee · Rule change · TB 22-01 (2022-01 Fastrack)
Effective 3/1/2022 In EP, make changes to BMW spec lines as follows: BMW Z3 2.5L - 59 58mm Flat Plate Intake Restrictor is required with both stock or alternate throttle body. BMW 328i/is E36 (96-99) - 62mm Flat Plate Intake Restrictor is required. BMW 328i/ci E46 (01-06) - 62mm Flat Plate Intake Restrictor is required. BMW 325i/is E46 (01-06) - 60mm Flat Plate Intake Restrictor is required. BMW 325i/is E36 (92-95) - 60mm Flat Plate Intake Restrictor is required. BMW 325is M-Technic (1994) - 60mm Flat Plate Intake Restrictor is required.
1999 3.8L Ford Mustang to EP?
#31635 from Chris Dercole · Rule change · TB 22-03 (2022-03 Fastrack)
In EP Spec Lines, Ford Mustang (94-98), change weight as follows: "2700 2550 *2768 2614 **2835 2678" In EP Spec Lines, classify Ford Mustang (99-03) as follows:
A specification table follows in the original; it is not shown here.
In Production, GCR Section 9.1.5.B.5, change as follows: "Any Improved Touring car meeting all the requirements of ITCS 9.1.3 may compete in the Production class in which the same make, model and engine displacement car is classified. For Improved Touring cars competing in Production, the level of preparation and modifications will be as determined by ITCS 9.1.3 and not by PCS 9.1.5, however any DOT approved tire as defined by 9.3.45 is allowed."
Throttle Body and Idle Air
#31800 from David Boles · Rule change · TB 22-02 (2022-02 Fastrack)
In GCR, Section 9.1.5.E.1.b.1., change as follows: “All inducted air must pass through the venturi(s) of the car’s carburetor(s), except that which passes through a stock/original idle control device.“ In GCR, Section 9.1.5.E.1.b.4., change as follows: “Fuel injection: All inducted air must pass through the throttle body and be subject to control by the throttle butterfly), except that which passes through a stock/original idle control device.“ In GCR, Section 9.1.5.E.1.b., add the following: ”9. Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed
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and any resulting openings blocked off. “ In GCR, Section 9.1.5.E.2.b.1., change as follows: “All inducted air must pass through the venturi(s) of the cars carburetor(s), except that which passes through a stock/original idle control device. “ In GCR, Section 9.1.5.E.2.b.4., change as follows: “Fuel Injection: All inducted air must pass through the throttle body and be subject to control by the throttle butterfly), except that which passes through a stock/original idle control device. “ In GCR, Section 9.1.5.E.2.b., add the following: “9. Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed and any resulting openings blocked off. “
Porsche 968 Engine Questions
#31831 from Hayes Flynn · Rule change · TB 22-02 (2022-02 Fastrack)
In EP spec line "Porsche 968 (92-95)", add to Notes: "Dry sump is allowed."
Request weight reduction for 1979-1985 Mazda RX-7
#31833 from RON OLSEN · Rule change · TB 22-02 (2022-02 Fastrack)
In EP Spec Lines, Mazda RX-7 (12A/13B) (79-85), change Weight as follows:
A specification table follows in the original; it is not shown here.
Porsche 968 Engine Questions
#31478 from Hayes Flynn · Rule change · TB 22-01 (2022-01 Fastrack)
In EP Spec Lines, Porsche 968 (92-95), change Intake Valve size as follows: "(I) 37 39.0/(1.46 54)"
PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom
#31592 from Chris Schaafsma · Rule change · TB 22-01 (2022-01 Fastrack)
In Production, GCR sections 9.1.5.E.1.n.4. and 9.1.5.E.2.n.4. change as follows: "For rear wheel drive cars, the transmission tunnel and tunnel cover can be altered to allow the installation of an alternate transmission and/or driveshaft. For front wheel drive cars, the body, unibody, frame, suspension crossmembers/subframes and their components may be altered to the extent required to allow the installation of an alternate transmission, transaxle and/or driveshaft axle shaft."
BMW Z3 2.5L Spec Line
#31724 from William Etherington · Rule change · TB 22-01 (2022-01 Fastrack)
In EP Spec Lines, BMW Z3 2.5L, change Notes as follows: "Comp. Ratio Limited to 12.0:1, Valve lift limited to .500”. To replace stock drive-by-wire throttle body, a Alternate throttle body from BMW 92-95 325i (part #13541748105) is permitted only with Turner Motorsports adapter plate (part #TEN9990850) is permitted. Cylinder head casting number 1738400 permitted with use of the allowed iron block (casting number 1748933 or 1738566)."
944S2 Restrictor
#31396 from KEVIN Patterson · Rule change · TB 21-12 (2021-12 Fastrack)
In EP Spec Lines, Porsche 944S2 (89-91), change Notes as follows: "Comp. Ratio limited to 12.0:1, Valve lift limited to .500”, Dry sump is allowed. 56mm Flat Plate Intake Restrictor is required. In order to facilitate the installation of the FPR, additional spacers/plates may be added to convert the mating area of the throttle body and the intake manifold into a flat surface. These pieces must maintain the stock 60mm throttle body bore, the FPR must be a separate piece that can be independently removed and measured, and the total thickness of all pieces (including the FPR) cannot add up to more than 1” in thickness. Can use the stock fuel tank if stock rear bumper and bumper support structure retained."
Classing Clarification for 1986 Toyota Corolla FX16
#31527 from Brian Heffron · Rule change · TB 21-12 (2021-12 Fastrack)
In HP Spec Lines, delete the Toyota Corolla (84-87) Spec Line in its entirety. In HP Spec Lines, classify the Toyota Corolla GTS (RWD) (84-87):
A specification table follows in the original; it is not shown here.
In the HP "Toyota MR-2 1.6L (85-89)" spec line, please correct the Track column as follows: "1532 47 / 1532 47" In GCR, Section 9.1.5.C.4, please change as follows: "Track specifications will be set at 103% of the car’s stock track, plus 2.5 inches."
Request to Allow F22c Engine for 2000-2003 Honda S2000
#30548 from Michael Unger · Rule change · TB 21-08 (2021-08 Fastrack)
In EP Spec Lines, delete Honda S2000 (00-03) and Honda S2000 (04-09) in their entirety. In EP Spec Lines, classify Honda S2000 as follows:
A specification table follows in the original; it is not shown here.
In EP Spec Lines, Nissan 240-SX S13/S14 (91-98), change as follows: Weight (lbs): "2600 2400 *2665 2460 **2730 2520" Notes: "Comp. Ratio limited to 10.5:1 12.0:1. Valve lift limited to .450 500”."
Lotus/Caterham 7 America Request
#30392 from Larry Svaton · Rule change · TB 21-07 (2021-07 Fastrack)
In EP Spec Lines, Lotus / Caterham 7 America, change as follows: Carburetor No. & Type: "IT fuel injection prep Fuel injection" Notes: "Engine is limited to IT preparation except modifications permitted in sections 9.1.5.E.2.e, 9.1.5.E.2.f, and 9.1.5.E.2.h."
Reclassify Daimler SP 250
#30721 from William Jarrell · Rule change · TB 21-07 (2021-07 Fastrack)
In EP Spec Lines, classify Daimler SP 250, as follows:
A specification table follows in the original; it is not shown here.
Clarify Application of Percentage Based Weight Penalties
#30669 from Production Committee · Rule change · TB 21-06 (2021-06 Fastrack)
In GCR, Section 9.1.5.C. add as follows: "5. For percentage-based weight penalties, all applicable percentage values shall be summed first, and then applied to the vehicle’s minimum specified base weight, as listed in the PCS. The minimum vehicle weight shall be rounded to the nearest pound. For example, a car with a 1950lbs minimum specified base weight, that’s running a non-stock gear-engagement transmission and non-stock brake rotors and/or calipers, would calculate its minimum weight as follows: 5% transmission penalty + 2% brakes penalty = 7% total penalty 7% total penalty * 1950 lbs base weight = 2086.5 lbs 2086.5 lbs rounded to nearest pound = 2087 lbs minimum weight"
Change Classification of 84-87 Mazda 626 from FP to HP
#30350 from David Reiter · Rule change · TB 21-05 (2021-05 Fastrack)
In HP Spec Lines, classify Mazda 626 (84-87):
A specification table follows in the original; it is not shown here.
Fiat X1/9 brake rotors
#30423 from Daniel Snow · Rule change · TB 21-05 (2021-05 Fastrack)
In FP Spec Line, Fiat X-1/9 & Bertone 1300, change Brakes Alt. as follows: "(F&R) 257 (10.0 1) x 12 (.40 7) Solid Disc (Lancia/Fiat)" In FP Spec Line, Fiat X-1/9 & Bertone, change Brakes Alt. as follows: "(F&R) Lancia 257 (9.875 10.1) x 12 (.40 7) Solid Disc (Lancia/Fiat)"
NC MX-5 year range correction E&O
#30503 from Josh Smith · Rule change · TB 21-05 (2021-05 Fastrack)
In EP Spec Lines, Mazda MX-5 (06-14) change as follows: "(06-14 5)"
Please Classify Mazda3 in FP
#30165 from John MacGowan · Rule change · TB 21-04 (2021-04 Fastrack)
In EP, classify Mazda 3 S (04-08) as follows:
A specification table follows in the original; it is not shown here.
Alternate Front Brake Rotors and Calipers for EP AH 3000
In EP, Spec Lines, Austin-Healey 3000 Mk. I, II, III, add to Brakes Alt.: mm/(in.) as follows: "Rear Disc: #H82462 Front calipers & discs from TR-6 (std. or alt)"
Mk2 VW Consistency and Cleanup of FP and HP Spec Lines
#29195 from Christopher Schaafsma · Rule change · TB 20-12 (2020-12 Fastrack)
In Production, Spec Lines, Change as follows: In FP: "Volkswagen Golf 1.8 (GTI, GT, GL) (85-92)" Weight: "1950 1900" In FP: "Volkswagen Jetta
Correct Wording for Level 1 and Level 2 Induction Systems
#29406 from Ron Bartell · Rule change · TB 20-12 (2020-12 Fastrack)
In Production, GCR section 9.1.5.E.1.b.1, make changes as follows: "All inducted air must pass through the venturi(s) of the car’s carburetor(s). Any carburetor(s) with restricted venturi(s) must retain such venturi(s) in the original location within the carburetor. The throttle plate, shaft location, and bore diameter (as measured at the throttle plate) shall remain as specified. Carburetor jets, jet needles, metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed. The number and type of carburetors must not be changed from stock, unless otherwise specified by the vehicles spec line. In all other regards, standard and approved optional carburetor(s) are unrestricted. All single carbureted cars may fit a permitted optional carburetor. Where the use of one (1) 40 DCN, DCNF, IDF carburetor is
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specified, a permitted optional carburetor may be substituted. Permitted optional carburetors are:" In GCR section 9.1.5.E.1.b.4, make changes as follows: "Fuel injection: All inducted air must pass through the throttle body and be subject to control by the throttle butterfly. The stock throttle body casting/housing must be retained. The inside dimensions of the throttle body casting/housing (as measured at the throttle butterfly) and all dimensions of the throttle butterfly must remain stock, but . T the throttle body can otherwise be ported and polished. The dimensions of the throttle butterfly must remain stock. The throttle butterfly shaft shall not be relocated. The outside diameter of the portion of the throttle butterfly shaft located in the throttle body bore must be no smaller than stock. The contour of the interface between the throttle butterfly shaft and the butterfly must remain stock. The throttle butterfly and any throttle butterfly to shaft screws/bolts can be attached to the throttle butterfly shaft by any means including welding or brazing. Holes or slots can be created in the throttle butterfly for purposes of idle adjustment only. The number of injectors must remain stock. The mounting position and the injection point must be stock. Electronic fuel injection may be substituted for the stock type of fuel injection. In all other respects the fuel injection system is unrestricted." In GCR section 9.1.5.E.2.b.1, make changes as follows: "All inducted air must pass through the venturi(s) of the car’s carburetor(s). Carburetor jets, jet needles, metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed. The number and type of carburetors must not be changed from stock, unless otherwise specified by the vehicles spec line. In all other regards, standard and approved optional carburetor(s) must not be modified. All single carbureted cars may fit a permitted optional carburetor. Where the use of one (1) 40 DCN, DCNF, IDF carburetor is specified, a permitted optional carburetor may be substituted. Permitted optional carburetors are:"
Weight Reduction for Datsun Roadster
#29409 from Samuel Neave · Rule change · TB 20-12 (2020-12 Fastrack)
In EP Spec Line, Nissan/Datsun SRL 311U Roadster, change Weight as follows: "2000 1925"
EP TR8 Adjustment
#29512 from Jeffrey Young · Rule change · TB 20-12 (2020-12 Fastrack)
In EP Spec Lines, Triumph TR8 (78-81), change weight as follows: "2600 2500"
84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O
#29458 from Brian Harmer · Rule change · TB 20-10 (2020-10 Fastrack)
In HP, Spec Lines, Toyota Corolla (84-87), change Wheels as follows: "13 15 x 7"
EP BMW Z3 Rule Clarification
#28998 from Sam Moore · Rule change · TB 20-08 (2020-08 Fastrack)
In EP, BMW Z3 2.5L, make changes to the spec line as follows: "Cylinder head casting number 1738400 permitted with use of the allowed iron block (casting number 1748933 or 1738566-C).
Request to Classify Porsche 911 2.0L
#28456 from Richard Spritz · Rule change · TB 20-07 (2020-07 Fastrack)
In EP, classify the Porsche 911 S (67-68) as follows:
A specification table follows in the original; it is not shown here.
BMW Cylinder Head Casting and Part Numbers
#28708 from Bill Lamkin · Rule change · TB 20-06 (2020-06 Fastrack)
In EP, correct the following spec lines as shown: BMW Z3 2.5L, add to "Notes" section: "Cylinder head casting number 1738400 permitted with use of the allowed iron block (casting number 1748933-C)." BMW Z3 2.8L (97-00), modify "Block Mat'l" section: "Alum or Iron" BMW 328i/is E36 (96-99), modify "Block Mat'l" section: "Alum or Iron"
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BMW 328i/ci E46 (01-06), modify "Block Mat'l" section: "Alum or Iron" BMW 325i/is E46 (01-06), modify "Block Mat'l" section: "Alum or Iron" BMW 325i/is E36 (92-95), modify "Block Mat'l" section: "Alum or Iron"
Request to Classify 1990-1994 Mazda Protege
#28381 from Nick Leone · Rule change · TB 20-05 (2019-05 Fastrack)
In FP, Classify the 90-94 Mazda Protege as follows:
A specification table follows in the original; it is not shown here.
Error in Mini Cooper Spec Line
#28713 from Frank Schwartz · Rule change · TB 20-05 (2019-05 Fastrack)
In HP Spec Lines, change as follows: "Mini Cooper (includes convertible) (02-06) (includes 05-08 convertible)" In HP Spec Lines, change as follows: "Mini Cooper (includes convertible) (07-13) (includes 09-15 convertible)"
In EP, modify the "Notes" section of the "Lotus/Caterham 7 America" spec line as follows: "Level 2 suspension preparation. Engine is limited to IT preparation except modifications permitted in sections 9.1.5.E.2.e., 9.1.5.E.2.f, and 9.1.5.E.2.h. and f. Comp. Ratio limited to 10.0: 1, Valve lift limited to .380”." Note that the "Level 2 suspension preparation" limitation is already mandated by the fact that this is a "Prep Level 2" classified vehicle. Removal of that wording from the "Notes" section is purely due to redundancy, and not to change the allowed preparation.
Request to Review Horsepower Parity
#27662 from Kevin Koelemeyer · Rule change · TB 20-03 (2020-03 Fastrack)
In EP, BMW Z3 2.5L, change notes as follows: "Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. To replace stock drive-by-wire throttle body, alternate throttle body from BMW 92-95 325i (part #13541748105) with Turner Motorsports adapter plate (part #TEN9990850) is permitted. 59mm Flat Plate Intake Restrictor is required with both stock or alternate throttle body. Alternate throttle body from BMW 92-95 325i part number 13541748105 permitted only with Turner Motorsports adapter plate part number TEN9990850 to replace drive-by- wire throttle body." In EP, BMW Z3 2.8L (97-00), add to the notes as follows:
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"Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. 59mm Flat Plate Intake Restrictor is required." In EP, Porsche 944S2 (89-91), add to the spec line as follows: Fuel Injected Equipped Throttle Body Inside Diameter - "60mm" stock "Comp. Ratio limited to 12.0:1, Valve lift limited to .500”, Dry sump is allowed. 56mm Flat Plate Intake Restrictor is required. Can use the stock fuel tank if stock rear bumper and bumper support structure retained."
E36 (92-95) Brakes Errors and Omissions
#28058 from Charles Baader · Rule change · TB 20-03 (2020-03 Fastrack)
In EP, BMW 325is M-Technic (1994), change as follows: Weight: "2650 2550 *2716 2614 **2783 2678" Brakes Std. "(F) (12.4 x 1.1) 286 vented"
Request to allow 40 DCOE carb for the Datsun 510
#28195 from James Bell · Rule change · TB 20-03 (2020-03 Fastrack)
In HP, Nissan/Datsun PL510, make changes to the spec line as follows: Carburetor No & Type: "(1) 40 DCN or, DCNF w/ 32mm choke(s),. 32mm choke(s) req'd, or (1) 36mm DCNVH. (2) auto type side draft(s) w/ 32mm choke(s) on I.R. manifold @ 90lbs penalty." Notes: "Compression ratio limited to 12.0:1, Valve lift limited to .450”. (2) auto type side drafts w/ 32mm choke(s) on I.R. manifold allowed @ 2050 (*2101 **2153). Nissan/Datsun 240Z/260Z/280Z front rotors and calipers and rear aluminum drums are permitted."
Add Throttle Body Size these EP BMW Spec Lines
#28422 from Production Committee · Rule change · TB 20-03 (2020-03 Fastrack)
In EP, Fuel Injected Equipped Throttle Body Inside diameter, make changes as follows: Add "64" as maximum inside diameter and delete any other wording.
Request for Help for Datsun 1200
#27934 from Ian Sullivan · Rule change · TB 20-02 (2020-02 Fastrack)
In HP Spec Lines, Nissan/Datsun 1200, make changes as follows in Carburetor No. & Type: "(1) 40 DCN, DCNF, IDF, 26mm choke(s) req’d. w/ 30mm choke(s), (2) auto type side draft w/ 30mm choke(s) on I.R. manifold."
Request to List Mazda Miata Throttle Body Size
#27907 from STEVE SARGIS · Rule change · TB 20-01 (2020-01 Fastrack)
In FP, Mazda Miata 1.6L (90-97), make changes as follows: Brakes Std.: "Factory spec @ all 4 wheels (F) 235 x 18 Vented Disc (R) 231 x 9 Solid Disc" Throttle body Diameter: "stock throttle body I.D. 55mm" In EP, Mazda MX-5/Miata 1.6L (-1993), make changes as follows: Brakes Std.: "(F) 235 (9.3) x 18 Vented Disc (R) 231 (9.1) x 9 Solid Disc"
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Throttle body Diameter: "stock throttle body I.D. 55mm" In EP, Mazda MX-5/Miata 1.8L (90-97), make changes as follows: Brakes Std.: "(F) 235 ( 9.3) x 18 Vented Disc (R) 231 (9.1) x 9 Solid Disc" Throttle body Diameter: "stock throttle body I.D. 55mm" In EP, Mazda MX-5/Miata (94-97), make changes as follows: Brakes Std.: "(F) 235 x 18 Vented Disc (R) 231 x 9 Solid Disc" Throttle body Diameter: "stock throttle body I.D. 55mm" In EP, Mazda MX-5/Miata (99-03), make changes as follows: Brakes Std.: "(F) 235 (9.3) x 18 Vented Disc (R) 231 (9.1) x 9 Solid Disc" Throttle body Diameter: "stock throttle body I.D. 55mm"
Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency
#27661 from Production Committee · Rule change · TB 19-12 (2019-12 Fastrack)
In Production, GCR section 9.1.5.E.2.e, delete section and replace as follows: e. The Cylinder Head can only be modified: 1. To install an alternate camshaft, and/or adjustable cam gears. 2. To port match on the port mating surface to a depth of no more than one inch. 3. To facilitate the installation of permitted alternate components, provided the modification serves no other function. 4. To achieve the maximum specified compression ratio by the machining of the deck surface. 5. To completely plug the holes resulting from the removal of EGR valves and air nozzles. The plugs must
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serve no other purpose. 6. To completely plug the stock fuel injection ports in the cylinder head, if the stock fuel injection is removed and carburetors are utilized. The plugs must serve no other purpose. 7. To utilize O-rings to replace or supplement a cylinder head gasket. 8. To fit valve seats. Valve seats are unrestricted. Valve seat angles are unrestricted. The valve seat insert can be no taller than one half inch. "e. Cylinder Head 1. The cylinder head may be modified to allow installation of permitted alternate components, provided the modification serves no other purpose. 2. Valve seats and valve seat angles are unrestricted. The valve seat may be no taller that one half inch. 3. The cylinder head deck surface may be machined to achieve the specified compression ratio and to allow the installation of o-rings to replace or supplement the cylinder head gasket. 4. Holes resulting from the removal of EGR valves, air nozzles and fuel injectors (if the stock fuel injection system is removed and carburetors substituted) may be plugged, provided the plugs serve no other purpose. 5. Cylinder head ports may be matched to the intake manifold to a depth of no more than 1 inch from the port mating surface."
Request bodywork for Austin Healey Bugeye Sprite MK1
#27106 from Gary Johnson · Rule change · TB 19-09 (2019-09 Fastrack)
In FP, Austin-Healey Sprite Mk I, II, III, IV / MG Midget Mk I, II, III, IV, & 1500, add to the notes as follows: "Sprite Mk I only may replace exterior rear body work, aft of the cockpit and rearmost door opening, with stock appearing components of an alternate material." In HP, Austin-Healey Sprite Mk I, II, III, IV / MG Midget Mk I, II, III, IV, Prep 1, 948cc, add to the notes as follows: "Sprite Mk I only may replace exterior rear body work, aft of the cockpit and rearmost door opening, with stock appearing components of an alternate material." In HP, Austin-Healey Sprite Mk I, II, III, IV / MG Midget Mk I, II, III, IV, & 1500, Prep 1/2, 1275cc, add to
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the notes as follows: "Sprite Mk I only may replace exterior rear body work, aft of the cockpit and rearmost door opening, with stock appearing components of an alternate material." In HP, Austin-Healey Sprite Mk I, II, III, IV / MG Midget (ALL), Prep 2, 1275cc, add to the notes as follows: "Sprite Mk I only may replace exterior rear body work, aft of the cockpit and rearmost door opening, with stock appearing components of an alternate material." In HP, Austin-Healey Sprite Mk I, II, III, IV / MG Midget (ALL), Prep 2, 1098cc, add to the notes as follows: "Sprite Mk I only may replace exterior rear body work, aft of the cockpit and rearmost door opening, with stock appearing components of an alternate material." In HP, Austin-Healey Sprite Mk I, II, III, IV / MG Midget Mk I, II, III, IV, & 1500, Prep1, 1098cc, add to the notes as follows: "Sprite Mk I only may replace exterior rear body work, aft of the cockpit and rearmost door opening, with stock appearing components of an alternate material."
In EP, Mazda MX-5 Global Cup, change the year as follows: "(16-18 19)"
level one susp. component rule
#27270 from Production Committee · Rule change · TB 19-09 (2019-09 Fastrack)
In Production, GCR section 9.1.5.E.4.e., change wording as follows: "Suspension Spindles, hubs, bushings, bearings, and ball joints are unrestricted."
Clarification of Carb Rules - Prep 1
#27300 from Production Committee · Rule change · TB 19-09 (2019-09 Fastrack)
In Production, GCR section 9.1.5.E.1.b., make changes as follows: 9.1.5.E.1.b – Drive Train Level 1, Induction System “1. All inducted air must pass through the venturi(s) of the car’s carburetor(s). Carburetor jets, jet needles, metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed. The number of carburetors must not be changed from stock, unless otherwise specified by the vehicles spec line. All single carbureted cars may fit a permitted optional carburetor. On cars w Where the use of one (1) 40 DCN, DCNF, IDF carburetor is required specified, a permitted optional carburetor may be substituted. Permitted optional carburetors are: can fit
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one (1) of the following permitted optional carburetors: 1. Weber 32 DGV/DGAV/DGEV 2. Weber 32/36 DGV/DGAV/DGEV 3. Weber 32/36 DFV/DFAV/DFEV 4. Weber 34 DAT/DATR/DATRA/DMTR 5. Holley-Weber 5200. Carburetor jets, jet needles, metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed. Where Weber carburetors are specified, Weber type carburetors can be substituted. The following are p Permitted Weber type carburetors are:
A specification table follows in the original; it is not shown here.
Clarification of Carb Rules - Prep 2
#27301 from Production Committee · Rule change · TB 19-09 (2019-09 Fastrack)
In Production GCR section 9.1.5.E.2.b.1., make changes as follows: 9.1.5.E.2.b.1., – Drive Train Level 2, Induction System “All inducted air must pass through the venturi(s) of the car’s carburetor(s). Carburetor jets, jet needles, metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed. The number of carburetors must not be changed from stock, unless otherwise specified by the vehicles spec line. All single carbureted cars may fit a permitted optional carburetor. Where the use of one (1) 40 DCN, DCNF, IDF carburetor is specified, a permitted optional carburetor may be substituted. Permitted optional carburetors are:
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1. Weber 32 DGV/DGAV/DGEV 2. Weber 32/36 DGV/DGAV/DGEV 3. Weber 32/36 DFV/DFAV/DFEV 4. Weber 34 DAT/DATR/DATRA/DMTR 5. Holley-Weber 5200. The stock or permitted alternate carburetor must not be modified. Carburetor jets, jet needles, metering rods and needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed. The number of carburetors must not be changed from stock. Where Weber carburetors are specified, a permitted Weber type carburetor can be substituted. Permitted Weber type carburetors are:
A specification table follows in the original; it is not shown here.
Request Miata Eligibility - 2003
#27121 from Gary Rose · Rule change · TB 19-08 (2019-08 Fastrack)
In EP, GCR section 9.1.5., Mazda MX-5/Miata, make changes as follows: "(99-02 05)"
Allow Firewall Modification for Fitment of 13B into RX8
#26726 from Production Committee · Rule change · TB 19-05 (2019-05 Fastrack)
In EP, Mazda RX-8 (04-11) (alternate), add to notes as follows: “Firewall may be modified as necessary for fitment of 13B into stock chassis engine mount location. Firewall must be sealed in the area of the modification.”
Rollcenter Correction Clarification
#25873 from Bill Lamkin · Rule change · TB 19-04 (2019-04 Fastrack)
Note from CRB: 9.1.5.E.5.b.2 in “Suspension and Steering Level 2: Suspension Components” states that “Suspension control arms, bushings, bearings, and ball joints are unrestricted.” However, allowance to ream out ANY tapered hole from a stock ball joint does not exist, unless being done to a specifically unrestricted component, like a suspension control arm. This is not the intent to restrict in that manner, and should be clarified: In GCR section 9.1.5.E.5.b.2, add wording as follows: “Suspension bushings, bearings, and ball joints are unrestricted. Tapered holes can be drilled or reamed, to allow a bolt to be used in place of a ball joint.”
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Note from CRB 9.1.5.E.2.o.5 in “Final Drive” states that “Axle shafts, bearings, bearing carriers, hubs, and universal joints/CV joints are unrestricted.” Therefore any of those items, all of which are defined in the GCR, that are part of the final drivetrain system of the vehicle, are indeed unrestricted. However, this rule would not apply to a non-driven axle, as it is not part of the drivetrain. It is agreed that allowing unrestricted bearings and hubs should not be limited to only the driven axle, and it should be applied to both axles/at any wheel: In GCR section 9.1.5.E.5.b. add wording as follows: “6. Wheel bearings and hubs are unrestricted.”
Hardtops
#26476 from Production Committee · Rule change · TB 19-04 (2019-04 Fastrack)
In GCR section 9.1.5.E.9.a.12, remove wording as follows: “Open cars must remove convertible soft tops, and attaching bracketry and fasteners. Open cars retaining the stock windshield may retain the stock removable hardtop if attached to the car by positive fasteners. Open cars must remove convertible soft tops and all attaching bracketry and hardware. If the stock windshield is retained, OEM and aftermarket hardtops are allowed. Aftermarket hardtops must retain OEM appearance in all exterior profiles, and carbon fiber construction is not allowed. Any hardtop must be attached by positive fasteners.” In EP, remove wording from spec line notes as follows:
Request for Competition Adjustment for 2nd Generation RX7
#25935 from Tony Jimerson · Rule change · TB 19-03 (2019-03 Fastrack)
In EP, Mazda RX-7(12A/13B)(79-85), change the weights as follows:
A specification table follows in the original; it is not shown here.
Other letters
Clean-up to Standardize L1 & L2 Rules
#40891 from Production Committee · Recommended to the Board · Minutes (2026-10 Fastrack)
In GCR, Section 9.1.5.E.1.o.5., change as follows: "Axle shafts, bearings, bearing carriers, hubs, and universal joints/CV joints, and differential covers are unrestricted." In GCR, Section 9.1.5.E.1.m.6. change as follows: "Engine mounts of alternate design and/or material can be used, but there can be no change to the engine’s fore, aft or vertical location except as permitted in 9.1.5.E.1.o.6 7. Engine mounts must attach to the engine in their stock location." In GCR, Section 9.1.5.E.1.n.1. change as follows: "The Transmission and its mount(s) areis unrestricted, providing that it is fit in the same basic location as stock. Sequential shifting transmissions are prohibited. Pneumatic, hydraulic or electric actuation of the gear shift mechanism is prohibited."
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In GCR, Section 9.1.5.E.1.o.6. change as follows: "Transverse engine cars can rotate the engine about the crankshaft centerline to align axle shafts/constant velocity joints. On rear engine/rear drive cars the engine/drivetrain can be relocated vertically upward, to a maximum of one inch, to allow alignment of suspension and driveline components. Differential mounts are unrestricted, provided the differential remains in the stock location except as permitted in 9.1.5.E.1.o.7." In GCR, create section 9.1.5.E.1.o.7. as follows: "Transverse engine cars can rotate the engine about the crankshaft centerline to align axle shafts/constant velocity joints. On rear engine/rear drive cars the engine/drivetrain can be relocated vertically upward, to a maximum of one inch, to allow alignment of suspension and driveline components."
Opposition to Letters 40571 & 40681
#40858 from Tim Schreyer · Taken care of · Minutes (2026-10 Fastrack)
Please see response to letter 40841 in current Fastrack.
Opposition Letters 40571 and 40681
#40841 from Greg Amy · No action required · Minutes (2026-10 Fastrack)
After much investigation and discussion into these items, and reflection upon the proceedings that brought them to light, it was determined that a wide variety of vehicles throughout the Production Category have modifications to diff covers, diff mounts, and trans mounts that could potentially be ruled illegal to the rules as they were written. Therefore, the rules addressing these items were heavily scrutinized for both clarity and intent, which then drove the decision to make the changes as published. It is believed that these revisions both clean up multiple "grey areas" and are within reason of the Prep. Level 2 ruleset. The Prod Committee understands that the timing and the optics of the situation are poor, but this doesn't affect the determination that changes to these rules to more accurately represent intent was needed.
Level 1 FP HP Update Backdate Intake Manifolds
#40838 from Daniel Snow · Taken care of · Minutes (2026-10 Fastrack)
Please see response to letter #40830 in current Fastrack.
Mazda Rotary Engine Request for Mazda Miata
#40753 from Yuri Collazos · Not recommended · Minutes (2026-09 Fastrack)
Thank you for your request, but this is not recommended as it is considered outside of Production philosophy. Please note that through the GTL ruleset (Appendix N), a 12A or 13B rotary can be ran in a Miata. Through the inclusion of GTL into FP, that car could then legally be ran in FP to that GTL classification. This configuration can also run legally in STL.
Allow Unrestricted Mounting of Differential and Transmission
#40681 from Jon Brakke · Recommended to the Board · Minutes (2026-09 Fastrack)
In GCR, Section 9.1.5.E.2.m.6. change as follows: "Engine mounts of alternate design and/or material can be used, but there can be no change to the engine’s fore, aft or vertical location except as permitted in 9.1.5.E.1.o.6 2.o.7. Engine mounts must attach to the engine in their stock location." In GCR, Section 9.1.5.E.2.n.1. change as follows: "The Transmission and its mount(s) areis unrestricted, providing that it is fit in the same basic location as stock. Sequential shifting transmissions are prohibited. Pneumatic, hydraulic or electric actuation of the gear shift mechanism is prohibited." In GCR, Section 9.1.5.E.2.o.6. change as follows: "Transverse engine cars can rotate the engine about the crankshaft centerline to align axle shafts/constant velocity joints. On
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rear engine/rear drive cars the engine/drivetrain can be relocated vertically upward, to a maximum of one inch, to allow alignment of suspension and driveline components. Differential mounts are unrestricted, provided the differential remains in the stock location except as permitted in 9.1.5.E.2.o.7." In GCR, create section 9.1.5.E.2.o.7. as follows: "Transverse engine cars can rotate the engine about the crankshaft centerline to align axle shafts/constant velocity joints. On rear engine/rear drive cars the engine/drivetrain can be relocated vertically upward, to a maximum of one inch, to allow alignment of suspension and driveline components."
Make it Clear that Differential Covers are Unrestricted
#40571 from Jon Brakke · Recommended to the Board · Minutes (2026-09 Fastrack)
In GCR, Section 9.1.5.E.2.o.5., change as follows: "Axle shafts, bearings, bearing carriers, hubs, and universal joints/CV joints, and differential covers are unrestricted."
Clarification of PSC9.1.5.E.11
#40358 from Jon Brakke · Recommended to the Board · Minutes (2026-08 Fastrack)
In section 9.1.5.E.11, make the following modification: "Glass headlight, front parking, side marker and signal light components must be removed. Plastic headlight, front parking, side marker and signal light components can be removed. The headlight bezels/rims must remain in their stock locations but can be replaced by components of an alternate material, provided their appearance remains stock. If the stock headlight, front parking, side marker or signal light lenses/covers are removed the resulting openings must be covered with wire mesh screen or solid panels of the same or a flatter contour than the stock lenses/covers. The openings created by the removal of these items must be covered with screens or panels. These covers must be the same or flatter contour as the stock lenses/covers, and may be attached to or integrated into surrounding bodywork. Headlight bezels/rims must remain in their stock locations but can be
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replaced by components of an alternate material, provided their appearance remains stock." In section 9.1.5.E.11.A, make the following modification: "Retractable or “pop up” headlight assemblies can be run in their open, partially opened, closed position or removed in their entirety. The openings created by the removal of the assembly must be covered with screens or panels. These covers must be the same or flatter contour as the stock assembly in its closed position, and may be attached to or integrated into surrounding bodywork, but need not retain any bezels/rims."
Triumph GT6 Adjustments
#40295 from Anthony Parker · Not recommended · Minutes (2026-08 Fastrack)
This is not recommended at this time. Several adjustments have been made to this classification in the past year and the data gathered has shown an improvement in performance. The PAC would like to continue to monitor this before any additional changes are considered.
Fiat 124 Spider EP 1995cc Increase Choke Size from 36mm to 40mm
#40245 from John Baucom · Not recommended · Minutes (2026-06 Fastrack)
This vehicle specification saw a weight decrease and a choke size increase in 2025, and the full impact of those changes may not yet be fully reflected or understood. At this point, it would be helpful to either gather additional on-track performance race data or provide further context and supporting information to clarify why the current specification is believed to be uncompetitive as it stands.
Triumph GT6 Adjustments
#40099 from Anthony Parker · Not recommended · Minutes (2026-05 Fastrack)
Thank you for your request, but the PAC would like to see this car run some under its current configuration before additional changes will be considered.
Rule Clarification
#39972 from Dean Ladd · No action required · Minutes (2026-05 Fastrack)
The rule states "Cars equipped with power steering as standard equipment can modify, substitute, disable and/or remove the power pump, related hoses and mounting brackets." Any changes made to the power steering system would have to be defended within this rule as written. If you have a more specific or detailed question, please submit another letter.
Revisions to Transmission Rules Consistent with Spec Line Format
#39508 from Jon Brakke · Recommended to the Board · Minutes (2026-01 Fastrack)
In GCR, Section 9.1.5.E.1.n., change as follows: "5. The "Trans. Speeds" number of transmission speeds l isted in a car’s specification line indicates the maximum is the number of forward gears that may be operable by the driver from the normal seated position (e.g. a 6 speed transmission with 1 forward gear removed/disabled is considered a 5 speed transmission). 6. The "Trans. Speeds" number listed in a car’s specification line indicates the maximum number of forward gears that may be operable by the driver from the normal seated position (e.g. a 6 speed transmission with 1 forward gear removed/disabled is considered a 5 speed transmission)."
Please Provide Update on Current State of Letter 34738
#39364 from Tim Schreyer · Taken care of · Minutes (2026-01 Fastrack)
#39155 from Bryce McGuire · Not recommended · Minutes (2025-12 Fastrack)
Thank you for your letter, but this request is Not Recommended at this time. The performance potential of the 2.8L BMW's in EP has proven to be adequate.
Reconsider Wheel & Tire Size Limitations in Prod
#37190 from Production Committee · No action required · Minutes (2025-12 Fastrack)
We appreciate your perspective and feedback. After thorough consideration of the survey responses, input from our tire manufacturers, the current state of wheel size variation and competition balance within each class, potential performance benefits that could be realized by the proposed changes, the ever-increasing costs of racing, and the current environment of Road Racing in general, the PAC has come to the conclusion to NOT make any large, sweeping changes to the current wheel specs at this time. It is evident that this is a sensitive and polarizing subject with no clear answer to what the best direction is for the Production Category, and that is ultimately why this decision is being made. Note that instances where a discrepancy appears to exist versus typical max wheel spec practices may still be considered for adjustment. The PAC wishes to thank all survey participants, as their responses did highlight how varied the opinions are on this subject, as well
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as any other input that was provided to help make this decision.
GCR Spec Line for 2001 Ford Mustang Question
#39092 from J Manny Forteza · No action required · Minutes (2025-11 Fastrack)
Thank you for your letter. Per all documentation that the Prod Advisory Committee has been able to find and review, the 56mm throttle body size that is currently listed on the "Ford Mustang (99-03)" spec line is correct. If the letter writer has reliable documentation that contradicts this, please provide it for additional consideration. Additionally, the currently indicated weight and wheel size are also correct as listed for EP competition.
Incorrect Info in Response to 38566
#38899 from Doug Piner · Not recommended · Minutes (2025-10 Fastrack)
Thank you for your letter. The current 50lbs difference between the 2.5L Z4 and 2.5L Z3 is fair until additional data and results prove otherwise. They are not the same car, with different suspension design, bodywork, and aero drag (increased frontal area does not always increase aero drag). The brake sizes are very similar, and both are permitted the same max 18x8 wheel width. If there are concerns with sourcing a 17" or 18" racing slick, then consider running a 15" wheel like most current BMW Z3 and E36 racers in EP are doing.
Triumph GT6 Adjustments
#38882 from Anthony Parker · Not recommended · Minutes (2025-09 Fastrack)
Thank you for your letter. Permitting a non-original intake manifold is against Production Category philosophy. If further positive performance adjustments are desired for this car, other options will need to be proposed and considered that are more in line with class philosophy.
BMW Restrictor Plate Application
#38806 from Bryce McGuire · Not recommended · Minutes (2025-09 Fastrack)
Thank you for your letter, however, the Flat-Plate Restrictors that are currently applied across a variety of BMW's in EP are accurate to current intent, with respect to power output, competition weight, chassis differences, etc. between them.
Nissan 350Z E Prod query
#38765 from David Muramoto · Not recommended · Minutes (2025-09 Fastrack)
Thank you for your inquiry, however, the 350Z is beyond the performance level of EP, therefore its classification is not recommended.
Why add a Restrictor to a Car Without Data?
#38566 from Doug Piner · No action required · Minutes (2025-08 Fastrack)
Thank you for your letter. The 2.5L engine in the Z3 and Z4 are nearly identical (bore, stroke, horsepower, torque, manifolds, etc.) and it is reasonable to expect that their performance potential when prepared to Production specifications will also be similar. In light of this fact, the use of the same FPR on the 2.5L Z4 as the Z3 is necessary to bring the Z4 into the EP performance envelope. The Z4 races at a heavier minimum weight than the Z3 due to its improved rear suspension and larger brakes front and rear. Lastly, "slick" race tires are available for 17” diameter wheels. The letter writer is encouraged to campaign the car so that further data can be collected and analyzed, in order to help determine if any further adjustments are warranted.
2010-2014 VW Golf E Production Classification Request
#38558 from Michael Davis · Not recommended · Minutes (2025-08 Fastrack)
Thank you for your letter. This request is not recommended based on the fact that the letter writer requested an alternate intake manifold be included in the classification. This is contrary to class philosophy. The request can be remade without the alternate intake manifold, if there's desire to campaign it as such.
Turbo Delete Limited Prep
#38089 from Matthew Brannon · No action required · Minutes (2025-05 Fastrack)
Thank you for your letter and bringing up this idea. The Prod Advisory Committee would have no problem with considering such a circumstance on a case-by-case basis, but don't see a need or a path forward for creating a sweeping allowance in the Production Ruleset for such a thing. Again though, if someone wanted to make a request to classify a specific turbocharged vehicle into the Production category, but without the turbocharger, that is a discussion that would certainly be had and studied for feasibility.
Miata Alternate Head
#38083 from Donald Tucker · Not recommended · Minutes (2025-05 Fastrack)
Thank you for your letter but this is not recommended. Permitting the '99+ head would create an engine & chassis combo that never existed from the factory. Additionally, the advantage this classification has is being permitted a full-prep chassis allowance, which the '99 Miata in EP does not have. This explains why they have the same weights, where one has a full-prep chassis, and the other is capable of slightly more power. Lastly, although sourcing pre-99 1.8L Miata heads might be more difficult than finding '99+ 1.8L Miata heads, it is by no means impossible, especially when compared to what many other Production racers go through to source desired and usable OEM parts for their cars.
Headlight Rings/Bezels
#37865 from Darryl Saylor · Recommended to the Board · Minutes (2025-04 Fastrack)
In GCR, Section 9.1.5.E.9.a.11., change as follows: "(Effective 6/1/2025) Glass headlight, front parking, side marker and signal light components must be removed. Plastic headlight, front parking, side marker and signal light components can be removed. The headlight bezels/rims must remain in their stock locations but can be replaced by components of an alternate material, provided their appearance remains stock. If the stock headlight, front parking, side marker or signal light lenses/covers are removed the resulting openings must be covered with wire mesh screen or solid panels of the same or a flatter contour than the stock lenses/covers."
Request to Classify SMX car in EP
#37708 from Nick Leverone · Not recommended · Minutes (2025-02 Fastrack)
Thank you for your letter. By permitting SMX cars to double-dip into EP, it would place a potentially large number of cars directly into the middle of the Production race group that are not prepped as or intended to run as Production cars, especially within the FP and HP fields, and potentially impact race finishes, points, and contingencies for cars that were actually prepped for and intended to race in Production. Additionally, there are modifications allowed in SMX that are not allowed in Limited-Prep Production (which all new classifications are to be classed as), meaning an allowance would need to be made that's against Production philosophy in order to allow SMX to run in a Prod class. The duty of the PAC is to grow and support Production classes for Production racers, and for these reasons, this request is not
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recommended.
Mazda 1999 Miata 1.8L
#37651 from Joe Carr · Taken care of · Minutes (2025-02 Fastrack)
Thank you for your letter. Please see response to Letter #37651, where the requested weight change was made to this classification. The additional request for "unlimited" cam lift is outside of Prep Level 2 philosophy.
Request for Engine Rules Change for Porsche 914-4
#37635 from Greg Mercier · Not recommended · Minutes (2025-02 Fastrack)
Thank you for your letter, but this allowance is not recommended. The boring of stock cylinders to a Prod permitted overbore appears to be doable with these engines, and having custom pistons made to fit the new overbore is a reasonable and typical component for building a Prod engine to the existing rules.
TR8 Axle Housing and Differential Gears, Injection Request.
#37487 from Joe Carr · Not recommended · Minutes (2025-02 Fastrack)
Thank you for your letter, but this allowance is not recommended. The alternate axle housing and diff that's being requested are outside of class philosophy, and although stock/legal rear housings and applicable diff options might not be cheap and plentiful, they do still readily exist. Additionally, if Fuel Injection is desired, the TR8 spec line is already allowed to run its stock fuel injection system and modify it within the permitted rules.
Please Accommodate a Modern Tire Option, 100TW, 200TW
#37004 from Mike W. Ogren · Not recommended · Minutes (2024-11 Fastrack)
Thank you for your letter, but this is not recommended. Competitors are already allowed to run whatever tire they choose in the Production Category provided it is fitted to a permitted wheel per their spec line. There is zero intention or desire to begin making special weight/competition balance allowances for whatever different tires a competitor may choose to run.
Request 2003 Mazda 6 for EP Level 2
#36736 from Henry Long · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. After discussion with the letter writer, it was determined that STU would be a better fit to consider running this existing car at its existing prep level, as it can be campaigned there as-is right now with no additional classification activity necessary. If the letter writer does wish to eventually prep his car to and run it within the Production Category Ruleset, then a request to classify into EP could be reconsidered at that time.
Awaiting Survey for Letter 34738
#36692 from Tim Schreyer · No action required · Minutes (2024-10 Fastrack)
Thank you for your letter. The Wheel & Tire Survey is currently in the final stages of development and approval. It should be sent out in early September prior to the Runoffs.
Z3 With Automatic for Hand Control Car
#36215 from James Rogerson · No action required · Minutes (2024-08 Fastrack)
Thank you for your letter. Per 9.3.28, this request needs to be addressed to the Road Racing Technical Manager for approval: “9.3.28. HAND CONTROLS: Hand controls may be approved on a case-by-case basis. Such approval shall be in writing from the Road Racing Technical Manager and shall be in the driver’s possession at all competitions.”
Clarification of Rule 9.3.26 Fuel Cell Specifications
#36088 from Lawrence Slivinski · No action required · Minutes (2024-07 Fastrack)
Thank you for your letter. Without knowing your specific car, as long as it fits the statement of requirements of the first sentence of 9.3.26 your interpretation is correct.
5 Speed Transmissions
#35919 from Brian Downey · Not recommended · Minutes (2024-05 Fastrack)
Thank you for your letter, but allowing a higher quantity of gears beyond what a car came with originally, is not within class philosophy. If the competitive balance of a particular car is in question, then a suggestion should be made for an adjustment that's within the usual philosophy of the Production category.
Honda s2000 weight reduction.
#35358 from Aaron Johnson · Not recommended · Minutes (2024-05 Fastrack)
Thank you for your letter, however your suggested changes are not recommended at this time. Several changes were made within the EP class following the completion of the 2023 Season, including some to this vehicle. The Production Advisory Committee and CRB require additional and data before any additional adjustments will be considered.
Competition Adjustment for Caterham 7, Pages 477-478 of the GCR
#35631 from Omer "Buddy" Norton · Not recommended · Minutes (2024-04 Fastrack)
Thank you for your letter, but adjustments for this specification are not recommended at this time. It is known that the Caterham is down in trap speed relative to most of its competitors, but it's also one of the class leaders in most of the other performance metrics, including acceleration rate up to a certain point before aero dependency becomes a large factor. If enough power is added to overcome that top-speed deficiency on faster tracks, then the car will become an outlier in acceleration rate between and out of corners, and dominate on slower speed tracks. The goal is to try and balance the average all of the performance attributes for every car, across an average of every track, and it is believed that the Caterham currently falls within that goal.
#35461 from David Spillman · No action required · Minutes (2024-03 Fastrack)
Thank you for your letter. Please look for a "What Do You Think?" survey to come out later this year regarding the future of the tire & wheel rules/specs in the Production Category. This is something that the Committee is actively working on now.
Fuel Injection Support of Request #34315
#35220 from Eric Vickerman · Taken care of · Minutes (2024-01 Fastrack)
Thank you for your letter. A response to letter #34315 was made in the previous Fastrack.
2023 Runoffs Notes
#35184 from Steve Sargis · No action required · Minutes (2024-01 Fastrack)
Thank you for your thoughts. Please see responses to letters #35060, #34315, and #35318 in current Fastrack, as they all address your points.
BMW Z3 2.5 Performance Adjustment Request
#35152 from Lance Loughman · Taken care of · Minutes (2024-01 Fastrack)
Thank you for your letter. Please see response to letter #35073 in current Fastrack.
BMW Z3 2.5 Performance Adjustment Request
#35142 from Lance Loughman · Taken care of · Minutes (2024-01 Fastrack)
Thank you for your letter. Please see response to letter #35073 in current Fastrack.
Seek Member Input on 15x7 Wheel Update to 15x8.
#34738 from Tim Schreyer · No action required · Minutes (2024-01 Fastrack)
Thank you for your thoughts on this subject, as it has created much discussion within the Production Advisory Committee (PAC) regarding wheel and tire widths in the Production Category. The PAC has ultimately decided that yes, Member Input will be sought on this subject, regarding the future of wheel and tire width limitations within the Production Category. Expect a survey to be released within the first quarter of 2024 to gather the opinions of active/recent Production competitors on this subject.
Nissan 280zx/280Z Weight Change Request
#35141 from Lance Loughman · No action required · Minutes (2023-12 Fastrack)
Thank you for your letter. In EP, the 280Z is classified 135lbs heavier than the 280ZX because the 280Z spec line has the following allowances that the 280ZX does not get: - Carb option, with two Hitachi-SU with 46mm throttle bores. - Level1 dry sump, connecting rods, intake manifold porting, crankshaft, rocker arms and cam followers. There is no current reasoning for why this should be changed. If the letter writer feels that the 280Z is classified at too high of a weight versus its competitors, and a case can be made for it to receive a weight break, then that could be considered with a sperate letter.
Classify Nissan (Datsun) PL 510 in EP
#34463 from Randall Smart · Not recommended · Minutes (2023-12 Fastrack)
Thank you for your letter. This chassis was never sold in the US with a 1.8L engine, nor did a prior classification ever exist that could be re-instated, and the current direction for the Production Category is to not create any new full-prep classifications. Due these points, creating this classification is not recommended.
Fuel Injection
#34315 from Steve Sargis · Recommended to the Board · Minutes (2023-12 Fastrack)
In GCR, Section 9.1.5.E.1.b.2., change as follows: "Stock or permitted alternate sidedraft carburetor(s) can use an adaptor plate and/or a spacer in addition to any stock spacer, between the carburetor(s) and the intake manifold. Material for the adaptor plate and spacer is unrestricted. No adaptor plate or spacer can serve any purpose other than to space out and/or mate the carburetor(s) to the permitted intake manifold. The adapter or spacer cannot create a plenum or change the carburetor(s) orientation. The maximum thickness for the adapter, spacer, stock spacer or combination of all is 1.25”. For the purpose of these rules an Isolator is a spacer. Classifications that have no fuel injection allowance on their spec line may substitute a fuel injected throttle body in place of each of its permitted carb(s). This alternate throttle body must have a Choke with the same diameter of the approved carb(s). A Flat Plate Intake
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Restrictor matching the specified choke dimension may also be used. The fuel injector(s) must be part of the throttle body." In GCR, Section 9.1.5.E.1.b.3., change as follows: "Stock or permitted alternate downdraft carburetor(s) can use an adaptor plate and/or a spacer in addition to any stock spacer, between the carburetor(s) and the intake manifold. Material for the adaptor plate and spacer is unrestricted. No adaptor plate or spacer can serve any purpose other than to space out, or mate the carburetor(s) to the permitted intake manifold. The adapter or spacer cannot change the carburetor(s) orientation. Adaptors and spacers can have a bore larger than the throttle bore of the stock or permitted alternate carburetor(s). The maximum thickness for the adapter, spacer, stock spacer or combination of all is 1.25”. For the purpose of these rules an Isolator is a spacer. Stock carb(s), permitted alternate side-draft carb(s), permitted alternate downdraft carb(s), and permitted alternate fuel injected throttle bodies can use an adaptor plate/spacer to mount to the permitted intake manifold, in addition to any stock spacer. Material for the adaptor plate/spacer is unrestricted. No adaptor plate/spacer can serve any purpose other than to space out and/or mate to the permitted intake manifold. The adapter plate/spacer cannot create a plenum or change the orientation of the mounting. The bore diameter of the adaptor plate/spacer is unrestricted. The maximum thickness for the adapter plate/spacer and any stock spacer (if used) is 1.25”. For the purpose of these rules an Isolator is a Spacer." In GCR, Section 9.1.5.E.2.b.2., change as follows: "Stock or permitted alternate sidedraft carburetor(s) can use an adaptor plate and/or a spacer in addition to any stock spacer, between the carburetor(s) and the intake manifold. Material for the adaptor plate and spacer is unrestricted. No adaptor plate or spacer can serve any purpose other than to space out and/or mate the carburetor(s) to the permitted intake manifold. The adapter or spacer cannot create a plenum or change the carburetor(s) orientation. The maximum thickness for the adapter, spacer, stock spacer or combination of all is 1.25”. For the purpose of these rules an Isolator is a spacer. Classifications that have no fuel injection allowance on their spec line may substitute a fuel injected throttle body in place of each of its permitted carb(s). This alternate throttle body must have a Choke with the same diameter of the approved carb(s). A Flat Plate Intake Restrictor matching the specified choke dimension may also be used. The fuel injector(s) must be part of the throttle body." In GCR, Section 9.1.5.E.2.b.3., change as follows: "Stock or permitted alternate downdraft carburetor(s) can use an adaptor plate and/or a spacer in addition to any stock spacer, between the carburetor(s) and the intake manifold. Material for the adaptor plate and spacer is unrestricted. No adaptor plate or spacer can serve any purpose other than to space out, or mate the carburetor(s) to the permitted intake manifold. The adapter or spacer cannot change the carburetor(s) orientation. Adaptors and spacers can have a bore larger than the throttle bore of the stock or permitted alternate carburetor(s). The maximum thickness for the adapter, spacer, stock spacer or combination of all is 1.25”. For the purpose of these rules an Isolator is a spacer. Stock carb(s), permitted alternate side-draft carb(s), permitted alternate downdraft carb(s), and permitted alternate fuel injected throttle bodies can use an adaptor plate/spacer to mount to the permitted intake manifold, in addition to any stock spacer. Material for the adaptor plate/spacer is unrestricted. No adaptor plate/spacer can serve any purpose other than to space out and/or mate to the permitted intake manifold. The adapter plate/spacer cannot create a plenum or change the orientation of the mounting. The bore diameter of the adaptor plate/spacer is unrestricted. The maximum thickness for the adapter plate/spacer and any stock spacer (if used) is 1.25”. For the purpose of these rules an Isolator is a Spacer."
BMW Z4 cast iron block
#34670 from Doug Piner · Not recommended · Minutes (2023-09 Fastrack)
Thank you for your letter. There is no direct replacement cast-iron block that fits into the BMW Z4 chassis, so this proposed allowance is not feasible.
Weight Reduction Request for TR8
#34236 from Morey d Doyle · Not recommended · Minutes (2023-06 Fastrack)
Thank you for your letter, but this request is not recommended. This specific classification has been granted several positive spec line adjustments in recent years, and it is not believed that any further are necessary at this time.
Input on Removing Rule 9.1.5.E.8.c
#34198 from James Bell · Taken care of · Minutes (2023-06 Fastrack)
Thank you for your letter. Please see response to Letter #34010 in current Fastrack.
Letter #34010 Feedback
#34076 from Greg Amy · Taken care of · Minutes (2023-06 Fastrack)
Thank you for your letter. Please see response to Letter #34010 in current Fastrack.
Remove 9.1.5.E.8.c
#34010 from Production Committee · Recommended to the Board · Minutes (2023-06 Fastrack)
In Production, Section, 9.1.5.E.8.c. remove as follows: "(Effective 01-01-2024) Cars using 13” wheels may run 8 inch wide (max) wheels, but only with Race Tires America American Racer 20.0-8.0-13, bias ply, non-belted tire. Cars using 15” wheels may run 10 inch wide (max) wheels, but only with Race Tires America American Racer 23.5-10.0-15, bias ply, non-belted tire."
Remove 9.1.5.E.8.c
#34010 from Production Committee · Member feedback requested · Minutes (2023-04 Fastrack)
The Production Advisory Committee is seeking member input regarding the possibility of removing rule 9.1.5.E.8.c: "9.1.5.E.8.c - Cars using 13” wheels may run 8 inch wide (max) wheels, but only with Race Tires America American Racer 20.0- 8.0-13, bias ply, non-belted tire. Cars using 15” wheels may run 10 inch wide (max) wheels, but only with Race Tires America American Racer 23.5-10.0-15, bias ply, non-belted tire." The original intent of this rule was to provide a second viable racing tire option to the Production Category when Goodyear stopped production of its bias-ply tires several years ago. At the time, Race Tires America made promises to supply their American Racer asphalt tire in appropriate sizes and road-racing compounds for use in Prod, but was not willing to say that it could be used on a 7" wide tire, which most 13" and 15" wheel applications in Production are limited to. Therefore this
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allowance was made, with the anticipation that Race Tires America would support it, it would become a viable option in the category, and racers would take up this option. Since then, the following has happened: - Goodyear has returned to making bias-ply slick tires, as well as a radial slick tire, for Prod competitors. - The American Racer tire is only produced in the softest compound that Race Tires America offers, which is not intended or viable for the longer circuit-racing events that the SCCA competes in. - The existence of this rule has been used to argue that even further special tire & wheel package allowances should be made, creating confusion regarding the direction and intent of the tire & wheel rules within the Prod category. As of this writing, it is not believed that any current Production racer is actively utilizing this rule, in order to run this tire & wheel package. If there is, and they would like to see this rule continue as-is, please let us know.
Please Revisit Tire and Wheel Width Rule Letter #33728
#33936 from James Rogerson · No action required · Minutes (2023-04 Fastrack)
Thank you for your letter. There is no change to the original response to letter #33728, which requested that vehicles which are specified to run a MAX 13" diameter wheel be allowed to run a 15x7" wheel when using the B-Spec Hankook or SM Hoosier tire. It pointed at rule 9.1.5.E.8.c as justification to why this should be allowed. Rule 9.1.5.E.8.c allows for an increase in wheel WIDTH only, when running a specific America Racer tire. It does not allow for an increase in wheel diameter, versus what is on a vehicles spec line, which is not the same as what's being requested here. Furthermore, its existence alone is not enough of a justifiable reason for the PAC to make further special tire and wheel package allowances, which are outside the scope of the Production Category. If the goal is to just find a cheaper alternative than the radial or bias-ply slick tires that are common in Prod, with competitiveness not being a concern, then a competitor is free to use a DOT race or street tire that fits their MAX
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wheel size, as specified on their vehicles spec line.
Flat Plate Restrictor Alternative
#33741 from Steve Saney · Not recommended · Minutes (2023-03 Fastrack)
Thank you for your letter, but it is believed that the method of adjusting the performance potential of this vehicle in question is appropriate for the effect that is desired. By trying to limit its performance potential by weight alone, that would only exacerbate the issue with how it competes in terms of straight-line and acceleration ability versus cornering and braking ability. Through the installation if a Flat Plate Restrictor, and not weight, the desired effect is to reduce the top-end and acceleration potential, while allowing it to still brake and corner in a manner that is competitive and within reason versus the rest of the class.
Headlight and Marker Light Covers, Mounting, and Gaps
#33724 from Bill Lamkin · No action required · Minutes (2023-03 Fastrack)
Thank you for your letter. It is believed that the rules are adequate as written. It is ultimately the competitor’s responsibility to adhere to them in an appropriate and reasonable manner, and be able to defend the modifications they have made to their car versus the rulebook. It is clearly defined what lights can/must be removed, that the resulting holes left after the removal of these lights must be covered with a screen/panel, and how that screen/panel can be contoured. A reasonable interpretation would be to ensure that the screen/panel closely replicates the shape and location of the light(s) it is replacing, and that the stock shape and profile of the vehicle remains intact. But again, it is ultimately the competitors responsibility to defend the legality of their car versus the rules and how they are written.
Allow B-Spec cars to run in Prod & align with 9.1.5.B.5
#33596 from Production Committee · Recommended to the Board · Minutes (2023-01 Fastrack)
In GCR, Production Category, Section 9.1.5.B.5. change as follows: “Any Improved Touring car meeting all the requirements of ITCS 9.1.3 may compete in the Production class in which the same make, model and engine displacement car is classified. For Improved Touring cars competing in Production, the level of preparation and modifications will be as determined by ITCS 9.1.3 and not by PCS 9.1.5, including tire limitations as defined in 9.1.3.D.8.a.2. however any DOT approved tire as defined by 9.3.45 is allowed. This is intended to allow Improved Touring competitors to become more familiar with Production to assist them in determining whether to modify their cars to meet the requirements of PCS 9.1.5 and also to permit Improved Touring competitors to compete in all events open to Production cars.” In GCR, Production Category, Section 9.1.5.B. add the following:
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"6. Any B-Spec car meeting all the requirements of BSCS 9.1.10 may compete in the Production class in which the same make, model and engine displacement car is classified. For B-Spec cars competing in Production, the level of preparation and modifications will be as determined by BSCS 9.1.10 and not by PCS 9.1.5, including tire limitations as defined by 9.1.10.E.7."
Dry Sumps in Production
#33520 from Ron Earp · Not recommended · Minutes (2023-01 Fastrack)
Thank you for your letter. Not recommended to make this a category/class wide allowance, as it will become perceived as a “must have” modification. Most vehicles do not need it, and those that do can continue to be looked at and allowed on a case- by-case basis.
Mazda RX3 - Rear Coil-Overs
#33435 from Aaron Downey · Not recommended · Minutes (2023-01 Fastrack)
Thank you for your letter. Changing the type of suspension is against the core philosophy of Limited Prep, so this allowance is not recommended.
Aggregated Runoffs Segment Data - EP
#33408 from Eric Prill · No action required · Minutes (2023-01 Fastrack)
Thank you for providing this data.
Controlling Cost
#32686 from Donald Ahrens · Taken care of · Minutes (2022-07 Fastrack)
Thank you for your letter. Please see response to Letter #31542 in the January 2022 Fastrack.
Strut braces
#32573 from Phil Hollenbeck · No action required · Minutes (2022-06 Fastrack)
Thank you for your letter. Rule 9.1.5.E.5.c.5 already states the following: "Suspension pickup/pivot axis points can be reinforced but must remain in the stock location." Adding a shock/strut/tie bar would be considered the reinforcing of stock suspension pickup points, and therefore legal within this rule.
Classify VW New Beetle 2.5L in EP.
#32242 from Brian Metcalf · Not recommended · Minutes (2022-06 Fastrack)
Letter writer was asked to provide a VTS and additional information for this potential classification. After multiple attempts, this was never received, therefore this request is Not Recommended at this time due to lack of information. If the letter writer would like to request it again with the appropriate info, then it can be reconsidered at that time.
Request Allowance for Stock Tank With Stock Crash Protection
#32193 from Ron Earp · Not recommended · Minutes (2022-06 Fastrack)
Thank you for your letter. Rule is adequate as written.
Z3 engines
#32325 from James Rogerson · Not recommended · Minutes (2022-04 Fastrack)
Thank you for your letter. The allowed alternate head is only permitted with the allowed alternate block, as an entire originally mated together engine assembly. The purpose is not to allow mixing and matching of heads and blocks between the iron block engine and the aluminum block engine.
Adapter plate for Z3 manifold
#32324 from James Rogerson · No action required · Minutes (2022-04 Fastrack)
Thank you for your letter. The spec line for this vehicle includes the part number for the correct throttle body adapter plate to match its stock intake manifold to its approved alternate throttle body. The adapter plate the letter writer is referencing is for the incorrect 3.0L intake manifold.
Convertible factory designed cars
#32291 from Danny Bradshaw · Not recommended · Minutes (2022-04 Fastrack)
Thank you for your letter. The practice of removing the front windshield frame-work from convertible cars has been a long- standing allowance in Prod, and there is no desire or need to deviate from that. If a competitor decides to retain that structure, and even add a hardtop if they want, that is also allowed. Specific roll-cage construction rules exist for either configuration.
Performance adjustment 1986 - 1991 Mazda RX7
#32189 from Michael Cooke · Not recommended · Minutes (2022-04 Fastrack)
Thank you for your letter. With other adjustments that have been recently made in EP to other front running classifications, an additional change with the RX7's is not recommended at this time. The overall competition balance of the class will continue to be monitored as this racing season continues.
Global MX5 Cup Car Ignores Production Class Philosophy.
#32204 from Bill Lamkin · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32218 in the current Fastrack.
Remove Mazda MX5 global Cup ND2 Sequential Transmission
#32188 from Michael Cooke · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32218 in the current Fastrack.
Remove Mazda MX5 Global Cup ND2
#32187 from Michael Cooke · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32218 in the current Fastrack.
Remove Mazda MX5 Global Cup ABS Brakes
#32186 from Michael Cooke · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32218 in the current Fastrack.
Car Classification
#32152 from Paul Lopez · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32218 in the current Fastrack.
Remove MX5 Global Cup cars from EP
#32140 from James Pettinato · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32218 in the current Fastrack.
Request to Change the IT Car Rules
#32119 from Andrew Benagh · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32064 in the current Fastrack.
MX5 Global Cup cars NOT Production cars
#32102 from Doug Piner · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32218 in the current Fastrack.
Allow Hoosier DOT Tires for IT Cars
#32068 from David Gran · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. Please see response to Letter #32064 in the current Fastrack.
Please Measure Valve Lift as Raced.
#32009 from Mike Ogren · Taken care of · Minutes (2022-03 Fastrack)
Thank you for your letter. A response was made to this consideration in the October 2021 Fastrack, via #31071, and there has been no additional reasoning to reconsider.
Consider Disable/Remove Stock Variable Lift/Timing Systems
#32000 from Production Committee · No action required · Minutes (2022-03 Fastrack)
Thank you for your letter. After inspection of the GCR, it was determined that there's sufficient ability in the current rules for cam shafts, cam gears, rockers, sensors, wiring, and ECU's for stock Variable Lift & Timing systems (VANOS, VTEC, VVT-i, etc.) to be legally disabled or removed within them. This determination is being published as an "FYI".
Aggregated Runoffs Time Card Data
#31726 from Eric Prill · No action required · Minutes (2022-03 Fastrack)
Thank you for your letter, and the compiled Time Card data.
Dual Classify ND2 Global Cup Car in EP and T3
#32004 from Maximilian Opalski · Member advisory · Minutes (2022-02 Fastrack)
In EP, Mazda MX-5 Global Cup (16-19) change Spec Line with Race Memo 22-01.
Request for Clarification to Allow Factory Idle Air Control
#31830 from Ian Green · Taken care of · Minutes (2022-02 Fastrack)
Thank you for your letter. Please see response to letter #31800.
Alternate Carburetion for Austin-Healey 3000
#31740 from Rich Walke · Taken care of · Minutes (2022-01 Fastrack)
Thank you for your letter. Please see response to letter #31739 in current Fastrack.
Weight Reduction Request for Austin-Healey 3000
#31739 from Rich Walke · Not recommended · Minutes (2022-01 Fastrack)
Thank you for your letter. In order to properly determine if a performance related competition adjustment is warranted for this vehicle, the PAC needs to see it adequately built and campaigned towards the limit of the Production ruleset.
Alternate materials for
#31613 from Daniel Snow · No action required · Minutes (2022-01 Fastrack)
Thank you for your letter. The usage and definition of stock and replica components is adequate as written, as is the definition of grille and trim.
100 Tread Wear Weight Allowance.
#31542 from Mike Ogren · Not recommended · Minutes (2022-01 Fastrack)
Thank you for your letter, but this is not recommended. Trying to balance the potential of different tires through weight breaks would be a difficult and unrealistic exercise, with constantly moving targets. It would also create an even bigger disparity in how different cars achieve their lap times. Competitors are free to use whatever tires they'd like, but their competitiveness cannot be guaranteed.
Request Weight Reduction for 84-91 BMW 325is
#30996 from Tim Schreyer · Not recommended · Minutes (2022-01 Fastrack)
Thank you for your letter. Please see response to letter #31858, where several other changes were made in EP in an effort to improve the competition balance of the class. Due to those changes, this additional requested change is not recommended at this time, as the results of these changes needs to be seen.
Correcting/Standardizing the Prod Measurement Charts
#27693 from Brett Whisenant · Taken care of · Minutes (2022-01 Fastrack)
Thank you for your letter. In late 2020 the PAC requested that SCCA's Technical Services go through all of the Production spec lines and standardize how the specs are presented. They should be uniform to what is shown in the column headers, so that where applicable, they are presented in both units, with metric being shown first and English being shown second in parenthesis. This process has now been completed, and the updated formatting will be present in the 2021 December GCR. As this was a lengthy process of manually inputting these values by hand, it is requested that each competitor verify that the content of their spec line still appears to be accurate, and provide feedback if any discrepancies are found.
Valve Lift Measuring Procedure
#31227 from Sam Moore · Taken care of · Minutes (2021-11 Fastrack)
Thank you for your letter. Please see the response to letter #31071 in the October Fastrack.
Scrutineering Request: Cam Lift
#31186 from Matt Reppert · Taken care of · Minutes (2021-11 Fastrack)
Thank you for your letter. Please see the response to letter #31071 in the October Fastrack.
Scrutineering request: Cam Lift
#31071 from Charles Baader · Not recommended · Minutes (2021-10 Fastrack)
Thank you for your letter. How valve lift is to be measured on all Prep Level 2 cars is already defined in 9.1.5.E.2.f.7: “Where maximum valve lift is specified, valve lift is measured at the valve with zero lash or clearance. There are a few exceptions to this rule, where a spec line specifically allows for valve lift to be "measured as raced - w/ lash". These spec lines are from the original "Limited Prep" classifications that were made, many years ago, and that was the process/ruling at that time. As the "Prep Level 2" ruleset matured, and more waves of cars got classified to it, this measurement method was re-evaluated and changed to the current rule. Previous classifications have since been allowed to "grandfather" their original rules. Just as competition balance is monitored between Prep Level 1 and Prep Level 2 cars, the same is true for
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these original "pseudo-Limited Prep" classifications. Reverting this valve lift measurement process again would not make building these cars any easier, would not balance the performance potential of the field, and just tempt competitors to re-do their cam designs to chase an extra few thousandths of lift. Due to all of that, this request is not recommended.
BMW Chassis Request
#31070 from Charles Baader · No action required · Minutes (2021-10 Fastrack)
Thank you for your letter. Specifically listing the allowed body styles in a spec line (i.e. coupe, sedan, convertible) isn't necessary. The competitor would just need to be able to prove that the vehicle/spec line they're choosing to complete with, did indeed ever come from the factory in the body configuration that they're using, if it was ever questioned.
#30944 MR2 Follow Up
#30948 from Kevin Navarre · Taken care of · Minutes (2021-10 Fastrack)
Thank you for your letter. Please see response to letter #30944 in current Fastrack.
Underbody Covers
#30944 from Kevin Navarre · Not recommended · Minutes (2021-10 Fastrack)
Thank you for your letter. This is not recommended. An allowance for a non-stock identical copy of these pieces would be difficult to enforce, and used examples appear to be still available at a reasonable cost.
ALTERNATOR/GENERATOR RELOCATION
#30762 from Daniel Snow · Not recommended · Minutes (2021-07 Fastrack)
Thank you for your letter. This change is not recommended at this time.
Reclassify Daimler SP 250
#30722 from William Jarrell · Taken care of · Minutes (2021-07 Fastrack)
Thank you for your letter. Please see response to letter #30721 in current Fastrack.
Request for BOP Adjustments for Acura Integra
#30660 from Anthony (Coyote Black · Not recommended · Minutes (2021-06 Fastrack)
Thank you for your letter. The allowances that are being requested are all outside the philosophy of Prep Level 2. It is also believed that this classification can become competitive as classified, if fully built to the extent of the rules, and continued development.
Clarification of New Brake Allowances
#30635 from Joe Camilleri · No action required · Minutes (2021-06 Fastrack)
Thank you for your letter. By fitting a vented rotor where a solid rotor existed originally, this would be considered the use of a "non-stock-size brake rotor", and be subject to the 2% "non-stock brakes" weight penalty.
Fiat X1/9 Carburetor Adapter
#30289 from DANIEL SNOW · No action required · Minutes (2021-05 Fastrack)
Thank you for your letter. The current method of adapting an alternate carb to intake manifold is legal to the rules and the vehicles spec line.
Fiat X1/9 brake rotors
#30287 from Daniel Snow · Not recommended · Minutes (2021-04 Fastrack)
Thank you for your letter. With the new "non-stock brake calipers and rotors" allowance, that come with a pre-defined weight penalty, a new "Alt Brakes" package that permits a larger and vented rotor versus stock, is not going to be issued without weight penalty. If the letter writer wishes to run the package as he describes, it could be done with the "non-stock brake calipers and rotors" weight penalty.
#27417 (Jesse Prather) Alternate Brakes for Production
#30216 from David Mead · No action required · Minutes (2021-04 Fastrack)
Thank you for your letter. No changes will be made to the new brake allowance rules at this time. As more races happen with cars that are utilizing these new rules, effects to competition balance will be reviewed.
Request Further Cleanup of Carburetor Rule
#30005 from Steve Sargis · Not recommended · Minutes (2021-04 Fastrack)
Thank you for your letter. It is not believed that any additional changes need to be made to these rules. They already state that a vehicle must use its standard carburetor or an approved optional carburetor. A competitor must be able to defend that the carb he/she is using is either the stock carb, or an approved optional carb via its spec line or general Prod approved optional carb list. Additionally, further rules exist that define how a stock or optional carb can be adapted to a stock (or permitted) manifold. If for some reason a specific car cannot possibly adapt an approved carb to its approved manifold, within the current rules, addressing that would be a case-by-case basis.
Competition adjustment for BMW Z3
#29946 from Jon Brakke · Not recommended · Minutes (2021-01 Fastrack)
"Thank you for your letter. After reviewing collected on-vehicle data, lap and segment data, and historical performance levels and lap times at Road America for the class, a significant competitive imbalance or class speed creep does not appear to be evident. The PAC will continue to monitor the performance of this car, as well as the general balance across all of EP, at a variety of tracks."
Input on Recommended Prod Brake Changes
#29928 from Bob Hudson · No action required · Minutes (2021-01 Fastrack)
Thank you for your letter. The PAC will keep this in mind when considering future allowances.
Request to allow T-Top cars to run as
#29830 from Greg Amy · Not recommended · Minutes (2021-01 Fastrack)
Thank you for your letter. This change is not recommended. A "Targa-Type Top" is defined in the GCR as being fully removable above the driver's seats, while a "T-Type Top" is defined as having two separate removable sections, but that the roof is otherwise in a fixed position, and removing a fixed position roof is not within class philosophy.
No Weight Penalty for New Brake Rule
#29662 from Aaron Johnson · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to letter #29510 in the current Fastrack.
Opposes proposed brake rules change for production
#29587 from Jonathon Becker · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to letter #29510 in the current Fastrack.
Favors alternate brakes in Production
#29584 from Heikki Silegren · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to letter #29516 in the current Fastrack.
Opposes Alternate Brakes for Production
#29572 from John Faull · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to letter #29510 in current Fastrack.
Opposed to Letter 27417 Production Brake Upgrade
#29568 from Mike Bachman · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to letter #29510 in current Fastrack.
Support for Brake Proposal with One Concern
#29541 from Sam Halkias · No action required · Minutes (2020-12 Fastrack)
Thank you for your letter. The first line in the proposed changes to the brake rules was specifically designed and worded to protect the continued use of all currently approved brake packages without any weight penalty, as listed in the "Brakes Std." and "Brakes Alt." columns of a vehicle's spec line. So if your vehicle already has an alternate package specified in the "Brakes Alt" column of its spec line, then its continued use would absolutely still be permitted without any weight penalty.
Opposition to Changes to the Brake Rules in Production
#29538 from Mike Cummings · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to letter #29510 in current Fastrack.
E Prod Valve Train Request
#29529 from Ronald Earp · Recommended to the Board · Minutes (2020-12 Fastrack)
In Production, GCR Section 9.1.5.E.2.f.5, change as follows: "Pushrods are unrestricted. Rocker shafts and/or shaft pedestals, when utilized in the stock system, can be replaced by alternate shafts and/or pedestals and are unrestricted. Valve rocker arms, and/or rocker type cam followers are unrestricted, but the rocker ratios and/or rocker/ follower ratios must be stock."
Support of Proposed Brake Rule
#29520 from Bill Lamkin · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to Letter #29516 in the current Fastrack.
Support of New Alternate Brake Rule
#29519 from Eric Griesinger · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to Letter #29516 in the current Fastrack.
Support of Proposed Brake Rule Change
#29517 from Kevin Koelemeyer · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to Letter #29516 in the current Fastrack.
Support for Changes to brake rule
#29516 from William Hubiak · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to Letter #29516 in the current Fastrack.
Against Proposed Production Brake Rules
#29510 from Anthony Parker · No action required · Minutes (2020-12 Fastrack)
Thank you for your letter. The CRB does not recommend any further modifications to the currently proposed changes to the brake rules, but your concerns will be passed along.
Support Letter 27417 Except 6 Piston Front 4 Piston Rear Calipers
#29498 from Aaron Johnson · Not recommended · Minutes (2020-12 Fastrack)
Thank you for your letter. The CRB does not recommend expanding the number of pistons on alternate calipers to 6. The responses to the distributed survey were overwhelmingly in favor of limiting caliper piston count to a max of 4. Market research has also shown that quality 4-piston alternate calipers are quite plentiful, while on average the pricing of similar 6-piston calipers increases.
Support for Letter #27417 Production Brakes
#29491 from Eric Prill · Taken care of · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see response to Letter #29516 in the current Fastrack.
Disband Prod Entirely
#29417 from Chris Taylor · Not recommended · Minutes (2020-10 Fastrack)
Thank you for your letter. It is not recommended by the Club Racing Board to disband Production.
Weight of the EP 94-98 Mustang
#29394 from J Manny Forteza · Not recommended · Minutes (2020-10 Fastrack)
Thank you for your letter. Many factors go into trying to determine how much power a car will make in Prod trim, including analysis of the stock engine design, specs, and limitations, and an educated estimate is made of the gains it could see within the Production rule-set. With no additional information being presented, like on-track performance, vehicle dynamics data, or dyno plots, there is no new reasoning presented to drive a re-evaluation of this vehicles classification. The Production Committee always encourages competitors to build, campaign, and share, to help build better parity and competitiveness for not only their own vehicle, but for all of the Production category.
Production Brakes
#29126 from Chris Schaafsma · Taken care of · Minutes (2020-10 Fastrack)
Thank you for your letter. Please see response to letter #27417 in current Fastrack.
In Favor of 4 piston caliper
#29114 from Kevin Koelemeyer · Taken care of · Minutes (2020-10 Fastrack)
Thank you for your letter. Please see response to letter #27417 in current Fastrack.
Request Alternate Front Brakes
#28743 from Sam Halkias · Taken care of · Minutes (2020-10 Fastrack)
Thank you for your letter. Please see response to letter #27417 in current Fastrack.
Request to consider allowing factory ABS in Prod
#28644 from Greg Amy · Not recommended · Minutes (2020-10 Fastrack)
Thank you for your letter. The introduction of ABS into the Production Category was discussed and surveyed at great length, while additional changes to the Brakes section of the rule-book were being considered. However, due to competitor response and feeling to this specific issue, as well as several other changes also being made to the brake rules at the moment, it is not recommended to add ABS into the Production Category at this time.
Request to Allow Modernization of Prod Brake Rules
#27852 from Dave Stephens · Taken care of · Minutes (2020-10 Fastrack)
Thank you for your letter. Please see response to letter #27417 in current Fastrack.
Support for Modernization Of Prod Brake Rules
#27803 from Michael Sperber · Taken care of · Minutes (2020-10 Fastrack)
Thank you for your letter. Please see response to letter #27417 in current Fastrack.
Modernizing Production Class Brake Rules
#27524 from Brett Whisenant · Taken care of · Minutes (2020-10 Fastrack)
Thank you for your letter. Please see response to letter #27417 in current Fastrack.
Alternate Brakes for Production
#27417 from Jesse Prather · Recommended to the Board · Minutes (2020-10 Fastrack)
In Production, GCR section 9.1.5.E.7., Brakes Level 1 and 2, make changes as follows: "a. Stock calipers must be retained. Cars fitted with integral hat brake rotors can convert to a two piece design hat and brake rotor. The alternate design hat must be made of ferrous or aluminum material. Alternate discs can be used, but must be made of ferrous material. Alternate drums can be used, but must be made of a ferrous or aluminum material. Alternate discs and drums must be the stock diameter, width and design. Brake rotors can not be cross drilled or slotted unless fitted as stock. Stock brake calipers and stock-size brake rotors may be used without penalty, as defined in the “Brakes Std.” and “Brakes Alt.” columns of a vehicle’s spec line. b. Any other non-stock brake calipers and/or non-stock-size brake rotors may be used with a penalty of 2% of the base weight.
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1. Non-stock brake calipers must have a max of 4-pistons and the caliper body must be made of ferrous or aluminum material. Calipers must be mounted in the same location and orientation as the stock positioning. Mounting brackets are unrestricted, but must be made of ferrous or aluminum material. Stock caliper mounting tabs may be modified or removed to facilitate caliper installation. In all other regards, non-stock brake calipers are unrestricted. 2. Non-stock-size brake rotors are unrestricted, provided they fit inside the max wheel limitations on a vehicle’s spec line. c. All brake rotors must be made of ferrous material, and can be cross-drilled and/or slotted. A two-piece hat and rotor design may be utilized, but the hat must be made of ferrous or aluminum material. d. Alternate drums can be used, but must be made of ferrous or aluminum material, and be the stock diameter, width, and design. b e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. Note that the “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear disc brakes under this rule. When converting from rear drum brakes to rear disc brakes: 1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on the vehicle’s spec line. Rear brake rotors must be solid and made of a ferrous material. Rear brake rotors cannot be cross drilled or slotted. 2. Rear brake rotor hats can be made of a ferrous or aluminum material. 3. 2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material. The standard and alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum brakes as stock from converting to rear disc brakes under this rule. c f. Dual braking systems are required. Any dual brake master cylinder(s) and pedal assembly can be fitted. Pressure equalizing and proportioning valve devices are unrestricted. d g. Servo assists are unrestricted. e h. Drum brake wheel cylinders are unrestricted. f i. Brake pads and brake linings are unrestricted. g j. Brake lines are unrestricted. h k. The hand brake and its operating mechanism can be removed. i l. Brake Ducting Brake air ducts can be fitted. Front duct inlet(s) cannot extend to the side beyond the center-lines of the front wheels, or beyond the forward most part of the front bodywork/air-dam. Rear duct inlet(s) must face forward, cannot extend to the side beyond the center-lines of the rear wheels, or be located more than 24” forward of the rear axle center-line. 1. Brake air ducts can be fitted. 2. The front brake duct inlet(s) must not extend to the side beyond the centerlines of the front wheels, or forward of the forward most part of the front of the body or front air dam. 3. Rear brake duct inlet(s) must face forward, they must be located no more than 24” forward of the rear axle centerline and must not extend to the side beyond the centerlines of the rear wheels. m.4. Backing plates and dust shields are unrestricted."
Brakes Feedback.
#28893 from Mike Ogren · No action required · Minutes (2020-07 Fastrack)
Thank you for your feedback. The survey results are still being gathered, and its results will be the primary driving force for any changes that may occur.
Proposed Performance Penalties for Porsche and BMW
#28524 from Kip VanSteenburg · Not recommended · Minutes (2020-06 Fastrack)
Thank you for your letter. The Club Racing Board would like to see the effect of these recent adjustments before any additional changes would be made. If the letter writer would like to submit some factual test data such as dyno or head flow plots, that would be incredibly helpful as the PAC continues to seek equal parity.
Opposes z3 2.8 restrictor plate
#28502 from James Rogerson · No action required · Minutes (2020-04 Fastrack)
Thank you for your letter. The performance potential of this vehicle will continue to be monitored, to ensure that its recent classification change still allows it to remain a viable option in the class. Competitors are encouraged to bring them out, so additional data can be collected.
Alternate Side draft Carburetor Intake Manifold (Prep 2)
#28413 from David Stephens · No action required · Minutes (2020-04 Fastrack)
Thank you for your letter. 9.1.5.E.2.b.7 is the governing rule for all intake manifold's for all Prep Level 2 vehicles, regardless of if the OEM piece or an allowed alternative is being used, unless otherwise specified on its spec line.
Metal Shims to Attain Compression
#28245 from WILLIAM TRAINER · No action required · Minutes (2020-03 Fastrack)
Thank you for your letter. It is believed that this would already be considered legal under the rule 9.1.5.E.1.m.1 and 9.1.5.E.1.m.1: "The use of alternate engine components which are normally expendable and considered replacement parts, such as fasteners, gaskets, seals, bearings, water pumps, etc., is permitted."
Request to Not Slow the German EP Cars
#27807 from Bill Lamkin · Taken care of · Minutes (2020-03 Fastrack)
Thank you for your letter. Please see response to Letter #27662.
Request for Competition Adjustment
#27711 from Lance Loughman · Taken care of · Minutes (2020-03 Fastrack)
Thank you for your letter. Please see response to Letter #27662.
Request for Parity
#27670 from Tom Fowler · Taken care of · Minutes (2020-03 Fastrack)
Thank you for your letter. Please see response to Letter #27662.
Request all current BSpec cars be allowed to compete in HP
#27529 from Peter Jankovskis · No action required · Minutes (2020-03 Fastrack)
Thank you for your letter. The Production Advisory Committee (PAC) is committed to creating, managing, and balancing Production classifications and Production cars. The PAC does agree that every car actively being raced in B-Spec should have an available classification in Production. Effort has been made over the past several months to make the necessary additions to Production so that every make/model that was raced in BS at the 2019 Runoffs, now currently also has a Production classification that it could compete under. If there are any B Spec racers whose vehicle is still not included in Production, and they are interested in competing in Production, they are urged to send in a letter for Production classification. Please note that by running under a Production classification, the competitor
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is expected to compete to the 9.1.5 Production Category rules of the GCR. Please also note the current existence of Production Category rule 9.1.5.B.5, which allows Improved Touring cars (a non-Runoffs eligible category) to compete in the Production class in which the same make and model car is classified, but wholly under the preparation, modification, and classification of their Improved Touring spec line and the Improved Touring rules.
Request to Allow Removal of Control Arms Rendered Obsolete
#27916 from David Mead · Not recommended · Minutes (2020-01 Fastrack)
Thank you for your letter. There is not a significant advantage to allowing this, yet there's certainly some unintended consequence that could arise from it. Therefore, this is not recommended.
Level 2 (Limited Prep) Cylinder Head 9.1.5.E.2.e
#27679 from Jonathan Spiegel · Not recommended · Minutes (2020-01 Fastrack)
Thank you for your letter. This allowance is not recommended at this time, because it is outside of the scope of Limited Prep. Also note that pistons are already unrestricted.
Changes for DT L1/L2 Engine Builds Due to Re-Write Omissions
#27436 from Comptune/Mike Miller · No action required · Minutes (2019-12 Fastrack)
Thank you for your letter. The suggested added wording/allowance is already covered/allowed under rules 9.1.5.E.1.a.1 and 9.1.5.E.2.a.1.
Request to allow ABS
#27315 from Bowie Gray · Not recommended · Minutes (2019-10 Fastrack)
Thank you for your letter. The requested allowance is not recommended at this time.
Request a clarification of valve size in GCR
#27307 from James Bell · No action required · Minutes (2019-10 Fastrack)
Thank you for your letter. The permitted valve size is listed on the spec line of every classification.
Request Level 1 suspension weight reduction
#27248 from Don Tucker · Recommended to the Board · Minutes (2019-09 Fastrack)
In EP, Mazda MX-5 /Miata 1.8L (90-97), change the weight as follows: "2258 2200"
Request choke relocation in permitted carburetor
#27195 from Jonathan Spiegel · No action required · Minutes (2019-09 Fastrack)
Thank you for your letter. As the Level 1 carburetor rules are currently written, it is not believed that these modifications would be deemed legal.
Request weight reduction for 2L Honda S2000 in E-Production
#27147 from Michael Heintzman · Not recommended · Minutes (2019-09 Fastrack)
Thank you for your letter. After further review of this vehicles specs, and on-track results and data, no adjustments are recommended at this time. However, additional data on this classification is desired, and current competitors are encouraged to continue developing and campaigning their cars, so that more data can be gathered for any future adjustment consideration.
E36 Chassis Coilover
#28702 from Mike Anderson · Not recommended · Minutes (2019-05 Fastrack)
Thank you for your letter. The requested allowance is against the class philosophy, and adequate spring and ride height adjusting options are available for the rear of the BMW E36 chassis.
Allow Replacement of Rear Window Glass in Closed Cars
#26649 from James Bell · Not recommended · Minutes (2019-05 Fastrack)
Thank you for your letter. Per rule 9.1.5.E.9.a.8.C, closed top cars are already allowed to replace their rear glass with polycarbonate material: “Rear, door, vent, and quarter window glass can be replaced with a clear polycarbonate material having a minimum thickness of 3mm.” Allowance of any holes in the rear window is still not recommended.
Response to Letter #25565
#26551 from Luis Rivera · Not recommended · Minutes (2019-04 Fastrack)
Thank you for your follow up letter. This request is still not recommended. There is too much difference between the two plates being compared in terms of port timing and porting potential. An alternative allowance is already given to update to the entire 13B engine.
Request to allow replacement of rear window glass in closed cars
#26172 from James Bell · Not recommended · Minutes (2019-03 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. Openings in the rear window of closed roof cars could potentially weaken the window or allow exhaust fumes inside the vehicle.
Request for Better Rotors and Venting Restrictions
#26038 from Anthony Black · Not recommended · Minutes (2019-03 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. Finding quality OE-style brake rotors has not been a known issue to date, but the PAC will continue to monitor parts availability across the category.
Request for Help for the FC RX-7
#25973 from Philip Royle · Taken care of · Minutes (2019-03 Fastrack)
Thank you for your letter. Please see response to letter #25935. March 2019 Technical Bulletin.
Request Weight Reduction for 2.8L Bmw 328i/is
#25871 from Bill Lamkin · Not recommended · Minutes (2019-03 Fastrack)
Thank you for your letter. This weight reduction is not recommended at this time, but the PAC encourages the letter writer to continue to develop and campaign this vehicle, as the performance parity across all of EP is continually monitored.
Supports Letter # 25426 Allow Drivers Seat Floor Pan
#25977 from Phillip George Hollenbeck · Taken care of · Minutes (2019-02 Fastrack)
Modification Thank you for your letter. Please reference letter 25426 in the December 2018 Fastrack.
Supports Drivers Seat Floor Pan Modification
#25862 from Alex Hollenbeck · Taken care of · Minutes (2019-02 Fastrack)
Thank you for your letter. Please reference letter 25426 in the December 2018 Fastrack.
Support for Letter #25426
#25857 from Phillip Hollenbeck · Taken care of · Minutes (2019-02 Fastrack)
Thank you for your letter. Please reference letter 25426 in the December 2018 Fastrack.
Engine Components Verification
#25565 from Luis Rivera · Not recommended · Minutes (2019-02 Fastrack)
The end plates of the 12a and the 13b are too different to be considered interchangeable without impacting performance, and it is not an allowance that would be considered at this time. The allowance would modify the port timing and create a hybrid combination that never existed as an OEM assembly.