This track has been raced on 4 configurations (The Circuit, 2.57 mi; 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.
5 laps are left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.
One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it.
Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.
Sectors
S1 SF → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 mi
Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.
By car
Car
Class
Drivers
Lap
Qual
Race
Trap
S1
S2
S3
Van Diemen RF05
FC
1
1:11.935Peter West
1:11.935Peter West
Van Diemen RF99
FC
1
1:12.478Troy Shooter
1:12.478Troy Shooter
Van Diemen DP08
FC
1
1:14.576Gary Peterson
1:14.576Gary Peterson
Pro Formula Mazda
FA
1
1:14.588Greg Labadie
1:14.588Greg Labadie
Swift 016
FA
1
1:35.792Greg Labadie
1:35.792Greg Labadie
1:37.275Greg Labadie
163.8Greg Labadie
26.713Greg Labadie
26.816Greg Labadie
41.822Greg Labadie
Van Diemen RF01
FC
2
1:45.137Robert Armington
1:45.137Robert Armington
1:45.314Robert Armington
143.5Robert Armington
29.050Paul MacFarlane
30.109Robert Armington
45.728Robert Armington
Van Diemen DP-08
FC
1
1:45.137Robert Armington
1:45.137Robert Armington
1:45.314Robert Armington
143.5Robert Armington
29.106Robert Armington
30.109Robert Armington
45.728Robert Armington
Van Diemen RF01
FC
1
1:48.522Paul MacFarlane
1:50.067Paul MacFarlane
1:48.522Paul MacFarlane
114.4Paul MacFarlane
29.050Paul MacFarlane
31.137Paul MacFarlane
48.294Paul MacFarlane
Van Diemen RF96
FC
1
1:47.570Shawn Sarbacker
1:47.741Shawn Sarbacker
1:47.570Shawn Sarbacker
146.2Shawn Sarbacker
29.351Shawn Sarbacker
30.778Shawn Sarbacker
47.076Shawn Sarbacker
Van Diemen RF97
FC
1
1:47.993Bill Wallschlaeger
1:51.040Bill Wallschlaeger
1:47.993Bill Wallschlaeger
147.5Bill Wallschlaeger
29.638Bill Wallschlaeger
30.895Bill Wallschlaeger
47.233Bill Wallschlaeger
Swift Db6
FF
2
1:49.259Edward Erlandson
1:55.247Johnnie Crean
1:54.993Johnnie Crean
124.5Johnnie Crean
31.358Johnnie Crean
32.841Johnnie Crean
47.766Edward Erlandson
SWIFT DB-6 Honda
FF
1
1:49.259Edward Erlandson
47.766Edward Erlandson
Swift Db6
FF
1
1:54.993Johnnie Crean
1:55.247Johnnie Crean
1:54.993Johnnie Crean
124.5Johnnie Crean
31.358Johnnie Crean
32.841Johnnie Crean
50.291Johnnie Crean
Chevrolet
GTX
2
1:49.569Bob Blizzard
124.8Michael Arnheiter
29.869Bob Blizzard
31.704Bob Blizzard
47.478Bob Blizzard
Chevrolet
GTX
1
1:49.569Bob Blizzard
124.2Bob Blizzard
29.869Bob Blizzard
31.704Bob Blizzard
47.478Bob Blizzard
Chevrolet Camero
GTX
1
1:59.339Michael Arnheiter
124.8Michael Arnheiter
32.354Michael Arnheiter
33.705Michael Arnheiter
50.741Michael Arnheiter
Ford Mustang GT4
GTX
1
1:49.596Rob Scholl
1:49.596Rob Scholl
116.4Rob Scholl
30.070Rob Scholl
31.820Rob Scholl
46.910Rob Scholl
Piper DL7-Honda
FF
1
1:51.118Eric Poulsen
1:52.044Eric Poulsen
1:51.118Eric Poulsen
114.7Eric Poulsen
30.276Eric Poulsen
31.650Eric Poulsen
48.818Eric Poulsen
SWIFT DB-
FF
1
1:53.098Edward Erlandson
1:53.098Edward Erlandson
1:54.741Edward Erlandson
133.7Edward Erlandson
30.951Edward Erlandson
32.299Edward Erlandson
49.791Edward Erlandson
Porsche 981 Cayman
GTX
1
1:54.892Moze Cowper
1:54.892Moze Cowper
1:55.330Moze Cowper
146.0Moze Cowper
31.377Moze Cowper
32.983Moze Cowper
49.706Moze Cowper
Van Diemen RF
FC
1
1:58.213Greg Pizzo
2:10.106Greg Pizzo
1:58.213Greg Pizzo
127.3Greg Pizzo
32.045Greg Pizzo
34.162Greg Pizzo
51.126Greg Pizzo
The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.
Rule changes between these events
Cal Club 2023 → Cal Club 2024 2023-02-24 to 2024-02-23
FF Add Fast Forward Part Numbers for Honda Fit Engine
#33752 from Formula/Sports Racing Committee · Rule change · TB 23-03 (2023-03 Fastrack)
neutralFF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components.
In FC/FF, GCR section 9.1.1.B.14.a.6, change as follows: "For all Honda part numbers in these specifications, superc seding part numbers are considered equivalent. In FC/FF, GCR section 9.1.1.B.14.f.5, change as follows: "Cylinder head breather restrictor must be used as supplied by HPD or Fast Forward, unmodified.: HPD PN: 15262-F21S-A200; Fast Forward PN: FF200-503." In FC/FF, GCR section 9.1.1.B.14.k.2, change as follows: "The upper manifold, air box and throttle body assembly must be used as delivered from Honda, HPD, or Fast Forward as noted below."
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In FC/FF, GCR section 9.1.1.B.14.k.2, insert as follows: "a. Intake manifold: HPD PN: 17210-F21S-A210; Fast Forward PN: FF200-201. b. Throttle body: Honda Fit: PN: 16400ZZ5024; HPD PN: 16400ZZ5024; Fast Forward PN: FF200-104. c. Throttle lever: HPD PN: 17330-F21S-A210; Fast Forward PN: FF200-101." In FC/FF, GCR section 9.1.1.B.14.k.3, change as follows: "All gaskets and sensors utilized on the inlet manifold from head to throttle body must be Honda Fit OEM, or HPD supplied or Fast Forward as noted below. a. Gasket In. manifold: HPD PN: 17105-RB0-004, Honda Fit OEM. b. Gasket, EGR chamber cover: HPD PN: 17146-RB0-004, Honda Fit OEM. c. Gasket In. port: HPD PN: 17115-RB0-007, Honda Fit OEM. d. Gasket, restrictor: HPD PN: 17399-F21S-A200, (2 required) HPD; Fast Forward PN: FF200-109. Two required." In FC/FF, GCR section 9.1.1.B.14.k.5, change as follows: "The Honda Fit engine is required to have an HPD supplied air inlet restrictor supplied by HPD or Fast Forward: HPD PN: 17344- F21S-A201; Fast Forward PN: FF200-110, with internal diameter of 30.5mm and thickness of 3.175mm (0.125 inches) correctly installed within the intake system." In FC/FF, GCR section 9.1.1.B.14.m.1, change as follows: "The exhaust manifold must be as supplied by HPD or Fast Forward:, HPD part # PN: 18150-F21S-A200 or # PN: 1818 50-F21S-B200; Fast Forward PN: FF500-001 or PN: FF500-002." In FC/FF, GCR section 9.1.1.B.14.n.1, change as follows: "The oil pan, baffle plate, and scavenge pump filter fittings must be as supplied by HP or Fast Forward as noted below. No modifications are permitted. a. Oil pan: HPD PN: 11200-F21S-A210 or PN: 11200-F21S-C240; Fast Forward PN: FF100-201A or PN: FF100-201B. b. Oil pan baffle plate: HPD PN: 11221-F21S-A210; Fast Forward PN: FF100-202. c. Oil scavenge pump filter fittings (2 required): HPD PN: 15180-F21S-A210; Fast Forward PN: FF100-204." In FC/FF, GCR section 9.1.1.B.14.n.3, change as follows: "The scavenge pump and internal scavenge pump parts must be as supplied from HPD or Fast Forward as noted below." In FC/FF, GCR section 9.1.1.B.14.n.3, change as follows: "b. Rotor outside diameter: HPD 44.400mm (1.748 inches):; Fast Forward 40.640mm (1.600 inches). c. Scavenge pump rotor set: HPD PN: 15450-F21S-A20; Fast Forward PN: FF100-110. d. Oil pump: HPD PN: 15100-F21S-A200; Fast Forward PN: FF100-100A. e. Scavenge pump cartridge: 15111-F21S-A21; Fast Forward PN: FF100-127. f. Scavenge pump port A: HPD PN: 15137-F21S-A20; Fast Forward PN: FF100-101. g. Scavenge pump port B: HPD PN: 15139-F21S-A20; Fast Forward PN: FF100-102. h. Scavenge pump shaft: HPD PN: 15510-F21S-A20; Fast Forward PN: FF100-103. i. Scavenge pump front cover: HPD PN: 15070-F21S-A21; Fast Forward PN: FF100-104."
GTX Please classify Fields Cardinal V8
#33784 from James Rogersn · Rule change · TB 23-05 (2023-05 Fastrack)
neutralFields Cardinal V8 classified in GT1 with Ford V8 engine, 4.9L displacement, 2100 lbs minimum weight.
In GT Spec Lines, GT1 Cars - Fields Cardinal, classify Fields Cardinal V8 as follows: GT1 Cars – Fields Cardinal Model Years Body Style Drive- line Wheel- base (in) Notes Fields Cardinal V8 2023 2 Dr. RWD 92.0 Roll Cage MUST be modified to comply with
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GCR Section 9.4. In GT Spec Lines, GT1Engines - classify Ford V8 as follows: GT1 Engines - Ford Engine Family Engine Type Bore x
A specification table follows in the original; it is not shown here.
FA E&O - Correct Pro Formula Mazda spec line dimensional equivalent
#34085 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)
fasterFA Pro Formula Mazda maximum bodywork width behind front wheels increases to 51.97 inches.
In FA Table 2, Pro Formula Mazda spec line, change as follows: "The overall maximum width of the bodywork behind the front wheels shall not exceed 132cm (51.17 51.97 inches)."
FA Add new spec line for MSR Formula Mazda FMzR to Table 2
#34139 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)
neutralFA MSR Formula Mazda FMzR added to Table 2 classification.
RM 23-06 – MSR - FMzR Formula Atlantic Classification dated 4/21/2023 In FA Table 2, add a spec line as follows:
FA Simplify Pro Formula Mazda wheel allowance
#34190 from Club Racing Board · Rule change · TB 23-06 (2023-06 Fastrack)
unclearFA Pro Formula Mazda front wheels widen to 10 in. max; rear wheels narrow to 14 in. min.
In FA, Pro Formula Mazda spec line, change wheel width as follows: "Pro Mazda series wheels
A specification table follows in the original; it is not shown here.
FC USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC
#34329 from Formula/Sports Racing Committee · Rule change · TB 23-06 (2023-06 Fastrack)
neutralUSF2000 Van Diemen with Mazda MZR LF-DE 2.0L added as spec line car in FC; removed from FX.
RM 23-07, USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC, GCR section 9.1.1.B.1, add a new section and re-letter the following sections accordingly: "c. The USF2000 tube frame Van Diemen car powered by the Mazda MZR LF-DE 2 liter engine is added as a "spec line" car in Formula Continental. Additional "spec line" cars are disfavored, and Balance of Performance (BoP) adjustments to keep "spec line" cars competitive with cars that meet the class formula are likewise disfavored." In FC, GCR section 9.1.1.B.11, add the following: "The only permitted engines are: a. The Ford 2 liter single overhead camshaft "NE" series engine or the 1971-74 Pinto/Capri 2 liter single overhead camshaft
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engine. The specifications are contained in B.15. b. The Ford Zetec ZX3 2 liter dual overhead camshaft engine. The specifications are contained in B.16. c. The Mazda MZR LF-DE 2 liter for use only in USF2000 cars, as described in the Spec Line Cars Table below." In FC, GCR section 9.1.1.B, add the following: In FX, GCR section 9.1.1.J.B, change as follows and renumber the remaining lines accordingly: "3. USF2000 (tube frame) – Shall comply with FRP F2000 Technical Specifications (2018) 4. Pro Formula F2000 (tube frame) – Engine must be prepared to current FC rules." In FX Table 1, remove the USF2000 Tube Frame and Pro Formula F2000 Tube Frame spec lines in their entirety. Spec Line Cars Table
A specification table follows in the original; it is not shown here.
GTX Request Ligier LMP3 Classification
#34043 from Alex Kirby · Rule change · TB 23-06 (2023-07 Fastrack)
neutralGTX Ligier LMP3 3.7L NA classified at 2203 lbs with 22 mm restrictor.
In GTX Spec Lines, classify Ligier LMP3 as follows: GTX - MISC Make Model Engine Restrictor (mm) Weight (lbs) Notes Ligier LMP3 3.7L NA 2203
GTX Ligier JSP4 Request
#34173 from Bob Monette · Rule change · TB 23-06 (2023-07 Fastrack)
neutralGTX Ligier JSP4 newly classified as GTX Misc with restrictor and weight specified.
In GTX Spec Lines, classify Ligier JSP4 as follows: GTX - MISC Make Model Engine Restrictor (mm) Weight (lbs) Notes
neutralFC tire marking rule clarified: four dry and wet tires for Regionals, eight each for Runoffs; damaged tire replacement procedures revised.
In FC, GCR section 9.1.1.B.10.h, change as follows: "FC shall be is permitted a maximum of four (4) dry tires and four (4) wet tires for all Regional, Major, and Super Tour events; eight (8) dry tires and eight (8) wet tires are permitted for the Runoffs. This rule shall be is effective beginning with the first (1st) qualifying session of the event. Marked tires are not required for testing or practice. It is the competitor's responsibility to ensure that the tires are declared, marked, and logged by Tech in advance of the tire(s) being used in a qualifying session or race. Failure to participate on marked tires will result in a penalty. 1. Use of an undeclared tire shall automatically result in all times being disallowed in that session or finishing position in that race.
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2. If a tire is damaged during a qualifying session or a race, the competitor may replace the damaged tire with a used tire upon approval by the Chief Steward without loss of time or finishing position. Second or subsequent damaged tires may similarly be replaced upon approval by the Chief Steward, however but such shall will result in the loss of grid position in the subsequent race or session; the competitor shall will start at the back of the grid. Replacement of a damaged tire with a new tire upon approval by the Chief Steward will result in loss of grid position in the subsequent race or session."
GTX Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules
#34453 from David Gomberg · Rule change · TB 23-12 (2023-12 Fastrack)
neutralGTL spec lines moved to contiguous position with GT2 and GT3; GTA category and spec lines renumbered and moved behind GTL.
from the current (or before) Table of Contents (TOC), to what is shown in the after TOC. GTL spec lines will now be contiguous with GT2 and 3 spec lines. GTA category and spec lines will be moved and renumbered behind GTL. GTA Section will not change but page numbers will, (as shown in Red italics). 9.1.2.F. GT-2, 3, LITE Category Specifications 314 GT2 Cars 327 GT2/ST 341 GT3 Cars 348
#34890 from Club Racing Board · Rule change · TB 23-10 (2023-09 Fastrack)
neutralF600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional.
In Cars and Equipment, GCR section 9.3.33.B.2, add the following: "(Effective 1/1/2024) A red taillight meeting FIA Standard 8874-2019, Technical List No. 76, is required on all Formula (open wheel) and Sports Racing cars." In Appendix F. Technical Glossary, Minimum Weight, change as follows: "Minimum Weight: – Weight specified with driver, exactly as they come off the race circuit, at the conclusion of any race or qualifying session." In FA Table 1, Spec Line E notes, add the following: "Any BD series iron or alloy cylinder block and alternate crankshaft permitted."
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In FC, GCR section 9.1.1.B.11.c, change as follows: "The Mazda MZR LF-DE 2 liter for use only in USF2000 cars, as described in the Spec Line Cars Table below."" In F600, GCR section 9.1.1.D.14, add the following: "Rotax Model 494, Model 493, and Model 593 must use a single expansion chamber and must be equipped with a pull starter; an electric starter may be added." In P1, GCR section 9.1.8.B.J.2, add the following: "Where a flat plate intake restrictor, restricted venturi, or Single Inlet Restrictor (SIR) is required, all intake air for each cylinder or the entire fuel-air mixture, if prepared before this point, must pass through the restrictor."
neutralFF Honda Fit gains Fast Forward FF800-100 oversize piston ring pack option.
In FF, GCR section 9.1.1.B.14.e.3.a, add the following: "The standard ring pack, PN 13011-RB1-004 (Riken) or 13011-RB1-006 (Nippon), or the oversize ring pack, PN 13021-RB7-Z01 (Riken), or 13021-RB7-Z02 (Nippon), or FF800-100 (Fast Forward), may be used."
fasterGT1, GT2, GT3, GTL, GTX rear spoiler maximum surface area limit of 295.0 square inches removed.
In GCR Section 9.1.2.G (GTA Category Specifications), change as follows: “9.1.2.G.III.I The single-plane rear spoiler must be mounted at an angel angle from 50 to 75 degrees (perpendicular to the ground being 90 degrees) and may not extend beyond the rear bumper when viewed from directly above the rear bumper. Spoilers must be a minimum of .063 aluminum or Lexan and may vary in overall height to match the contours of the bodywork. The rear spoiler dimensions shall not exceed 59.0 inches wide by 5.0 inches in height, (measured on the material surface) , or 295.0 square inches total surface area. Braces to prevent spoiler deflection are allowed, but may serve no other purpose.”
GTX GT Direct Injection allowance and rules
#35437 from Grand Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)
fasterGT1/GT2/GT3/GTL/GTX Direct Injection now permitted if OE, using only OE pump, hoses, injectors.
In GCR, Section 9.1.2.F.7.5.E. change as follows: “Direct Injection is not permitted only if it came OE and must be installed using only OE high pressure pump(s), hard and soft hoses and injectors.”
GTX GT2/3 remove Direction Injection not allowed in Spec line notes
#35439 from Grand Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)
fasterGT2/3 Nissan, Mazda, Mitsubishi 4G93, QR25DE/DD, QE25DE/DD Direct Injection now permitted per 9.1.2.F.7.5.E.
In GT2/3 modify Spec Line notes as follows: GT2: Nissan: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” GT3: Mazda: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” Mitsubishi 4G93: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E. ” Nissan QR25DE/DD 1988cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.” Nissan QE25DE/DD 2489cc: “Direct Injection not permitted, may be used per 9.1.2.F.7.5.E.”
Cal Club 2024 → Cal Club 2025 2024-02-23 to 2025-02-22
FC Four Pot Calipers
#35481 from Steve Jenks · Rule change · TB 24-04 (2024-04 Fastrack)
neutralFC adds F2000 Metrik ZF2 with Ford Zetec engine and four-piston Brembo calipers as spec-line car.
In FC Table FC Charts, add the following: In FC, GCR section 9.1.1.B.1.c, change as follows: "The USF2000 tube frame Van Diemen car powered by the Mazda MZR LF-DE 2 liter engine and the F2000 Metrik ZF2 car equipped with 4-piston calipers is are added as a "spec line" cars in Formula Continental. Additional "spec line" cars are disfavored, and Balance of Performance (BoP) adjustments to keep "spec line" cars competitive with cars that meet the class formula are likewise disfavored." FC Charts Car Engine Wheel Width
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(in) ± .060 Aero Transmission Weight Notes
A specification table follows in the original; it is not shown here.
slowerGT2-ST Acura NSX minimum weight raised to 3000 lbs, restrictor increased to 45mm TIR.
In GT2-ST Spec Lines, Acura NSX, change as follows: Minimum Weight: "2700 3000" Restrictor: "43 45mm TIR"
FF Update to FF EGR Blanking Plate Rule
#36633 from Matt Boian · Rule change · TB 24-10 (2024-10 Fastrack)
neutralFF VTEC activation valve must function; EGR blanking plate rule clarified with Fast Forward part numbers.
In FF, GCR section 9.1.1.B.14.r.1, change as follows: "All emission control devices must be removed and blocked off by the blanking plate provided by HPD or Fast Forward as noted below, except for the VTEC activation valve. The VTEC activation valve must be retained; and it must be functioning. No modifications are permitted. a. EGR Plate: Fast Forward PN: FF200-301. b. EGR Port Cover: Fast Forward PN: FF200-302."
slowerFC tire limit reduced to four dry and four wet for Regional/Major/Super Tour, eight for Runoffs.
In FC, GCR section 9.1.1.B.10.h, change as follows: "(Effective 11/1/2024) FC is permitted a maximum of four (4) dry tires and four (4) wet tires for all Regional, Major, and Super Tour events; eight (8) dry tires and eight (8) wet tires are permitted for the Runoffs. This is effective beginning with the first (1st) qualifying session of the event. Marked tires are not required for The tire limit does not apply to testing or practice. It is the competitor's responsibility to ensure that the tires are declared, marked, and logged by Tech immediately upon conclusion of the first qualifying session, as provided in the event supplemental regulations, or per the instructions of the Race Director or Chief Steward. in advance of the tire(s) being used in a qualifying session or race. Failure to participate on marked Use of tires in excess of the number allowed will result in a penalty. Failure to participate on declared/marked/logged tires after the time
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prescribed for the same may result in a penalty. If a tire is damaged during a qualifying session or a race, the competitor may replace the damaged tire with a used tire upon approval by the Race Director or Chief Steward without loss of time or finishing position. Second or subsequent damaged tires may similarly be replaced upon approval by the Race Director or Chief Steward, but such will result in the loss of grid position in the subsequent race or session; the competitor will start at the back of the grid. Replacement of a damaged tire with a new tire upon approval by the Race Director or Chief Steward will result in loss of grid position in the subsequent race or session; the competitor will start at the back of the grid."
FF Change FF/FC Weight with Sequential Gearbox
#36651 from Robert Wright · Rule change · TB 24-11 (2024-11 Fastrack)
fasterFF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs.
In FF, GCR section 9.1.1.B.20.A.3, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight." In FC, GCR section 9.1.1.B.20.B.4, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight."
FC Change FF/FC Weight with Sequential Gearbox
#36651 from Robert Wright · Rule change · TB 24-11 (2024-11 Fastrack)
fasterFF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs.
In FF, GCR section 9.1.1.B.20.A.3, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight." In FC, GCR section 9.1.1.B.20.B.4, change as follows: "Cars running with a sequentially shifted gear box shall must add 25 10 lbs. to minimum weight."
FF Alternative Oversize Honda Fit Pistons
#37064 from Formula/Sports Racing Committee · Rule change · TB 24-11 (2024-11 Fastrack)
neutralFF Honda Fit allows Fast Forward 0.25mm oversize pistons PN FF800-110 as alternative; piston diameter spec clarified to 2.8835 inches.
In FF, GCR section 9.1.1.B.14.e.1, change as follows: "Honda Fit OEM standard size pistons, PN: 13010-RB1-000, or Honda Fit OEM 0.25mm oversize pistons, PN: 13020-RB7-Z00, or Fast Forward 0.25mm oversize pistons, PN: FF800-110, may be used." In GCR section 9.1.1.B.14.e.2, change as follows: "a. Maximum standard piston diameter, measured at a point 16mm from the bottom of the skirt: 73.240mm (2.8834 2.8835 inches). b. Centerline of wrist pin to crown maximum: 26.21mm (1.032 inches). c. Maximum overall height from skirt to crown edge: 47.80mm (1.882 inches).
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d. Minimum weight: 198.0 grams (6.984 ounces). e. Minimum weight of piston pin: 66 grams (2.25 ounces). f. Combined minimum weight of piston, piston pin and connecting rod: 543.5 grams (18.85 ounces). g. Combined minimum weight of piston, wrist pin, and circlips: 267 grams (9.418 ounces). h. Centerline of wrist pin to crown edge: 26.289mm (1.035 inches). i. Ring groove widths: Top ring groove: 1.003mm (0.0395 inches). Middle ring groove: 1.016mm (0.0400 inches). Oil ring groove: 1.981mm (0.0780 inches). j. Ring groove distance from wrist pin center to bottom of groove: Top ring groove: 19.63mm (0.7730 inches). Middle ring groove: 15.29mm (0.6020 inches). Oil ring groove: 10.91mm (0.4295 inches)."
GTX Correct language regarding OEM Areo Devices
#37137 from Christopher Childs · Rule change · TB 25-01 (2025-01 Fastrack)
In GCR, Section APPENDIX L. 2013 TA2 TECHNICAL REGULATIONS, B.2.c., change as follows: "B. Aerodynamic Devices 2. Rear wing c. The entire rear wing assembly, including the end plates and any Gurney flap, shall be mounted level with, or below, the peak of the roof. OEM aerodynamic devices do not need to adhere to the height rule."
A specification table follows in the original; it is not shown here.
FA Classify FR European Championship car as spec line car in Table 2
#37658 from Club Racing Board · Rule change · TB 25-02 (2025-02 Fastrack)
neutralFA adds Tatuus F.3 T-318 or FR-19 as spec line car in Table 2 for Formula Regional European Championship.
In FA Table 2, add the following: Table 2 (Spec Line Cars) Car Engine Wheel Width (in) ± .060 Aero Transmission Weight Notes
A specification table follows in the original; it is not shown here.
Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21
FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change
#37802 from Anthony Stefanelli · Rule change · TB 25-03 (2025-03 Fastrack)
fasterFF allows older cars with rocker arm or outboard suspension to use bias ply slicks or VFF tires instead of radials.
In FF, GCR section 9.1.1.B.10.e, change as follows: "Formula F shall be limited to the following tires (front tires may not be used as rears): Dries: Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13 Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13 Wets: Front - Hoosier Wet or W3 Radial 44421 185/60R13 Rear - Hoosier Wet or W3 Radial 44426 205/60R13
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Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at least one chassis end may use the following tires: Dries: Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick Wets: Radial wets listed above or Front - Hoosier 44165 135/545-13 VFF Rear - Hoosier 44170 165/580-13 VFF Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."
FA Update Formula Renault 2.0 spec line notes
#37853 from Club Racing Board · Rule change · TB 25-03 (2025-03 Fastrack)
neutralFA Formula Renault 2.0 (10-17) spec notes clarified: engine sealed, manual compliance required, tire choice unrestricted, no alterations except repairs.
In FA Table 2, Formula Renault 2.0 (10-17) spec line, change the notes as follows: "Engine must remain sealed. Car must comply with year-specific Formula Renault 2.0 manual, technical regulations, and all applicable bulletins found here:. Competitors must have copies of these materials in their possession and present them upon request. https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/bulletins-techniques/2017, https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/manuel-d-utilisateur/2017. The following exceptions apply: Tire choice is unrestricted. No part of the car may be altered from original Formula Renault 2.0 components, except for necessary repairs that do not affect performance."
GTX Request to Classify Porsche GT2 RS Clubsport
#37972 from Paul Fairchild · Rule change · TB 25-05 (2025-05 Fastrack)
neutralGTX Porsche GT2 RS Clubsport classified with factory specifications required at all race events.
In GTX, Classify Porsche GT2 RS Clubsport, as follows: GTX Make Homologation Model Restrictor (mm) Weight (lbs) Notes Porsche GT2 RS Clubsport Must have factory specifications available at all race events
FF Page 228, FF tire rule 9.1.1.10.e
#38251 from Anthony Stefanelli · Rule change · TB 25-05 (2025-05 Fastrack)
neutralFF adds rocker arm and outboard suspension cars optional bias ply and VFF tires; removes front-as-rear rule, adds mixing restrictions.
In FF, GCR section 9.1.1.B.10.e, change as follows: "Formula F shall be limited to the following tires (front tires may not be used as rears): Dries: Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13 Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13 Wets: Front - Hoosier Wet or W3 Radial 44421 185/60R13 Rear - Hoosier Wet or W3 Radial 44426 205/60R13
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Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at least one chassis end may use the following tires: Dries: Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick or Hoosier 44165 135/545-13 VFF Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick or Hoosier 44170 165/580-13 VFF Wets: Radial wets or VFF tires listed above or Front - Hoosier 44165 135/545-13 VFF Rear - Hoosier 44170 165/580-13 VFF Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."
GTX Ligier P3 LS Swap
#38164 from Bart Wolf · Rule change · TB 25-06 (2025-06 Fastrack)
unclearGTX Ligier LMP3 now allows any normally aspirated LS Chevrolet engine.
In GTX Spec Lines, GTX-MISC., Ligier, LMP3, 3.0L, Add to Notes the following: "Allow any normally aspirated LS Chevrolet engine may be used."
FA Ligier JS F3 Tire Choice
#38434 from Rocco Magni · Rule change · TB 25-07 (2025-07 Fastrack)
neutralFA Ligier JS F3 front tires may be Hoosier 43363 240/580R13 MS, rear 43368 300/590R13 MS.
In FA Table 2, FR Americas Ligier JS F3 spec line, change the notes as follows: "Engine must be sealed in compliance with FR Americas or prior F3 Americas requirements. Car must comply with FR Americas rules, with the following exception: front tires may be Hoosier P/N 43363, size 240/580R13 in MS compound, and rear tires may be Hoosier P/N 43368, size 300/590R13 in MS compound. Competitors must have current copies of Formula Regional Americas Championship Sporting Regulations, Onroak Automotive Ligier JS F3 Information Manual, and HPD engine-related specifications and instructions in their possession and present them upon request."
FA Re-Consider USF Pro 2000 Car for Formula Atlantic Class
neutralFA class adds USF Pro 2000 car eligibility for Formula Atlantic racing.
Effective 11/1/25 in FA Table 2, add the following:
FA Alternate Intake Manifold for MZR
#38223 from Ove Olsson · Rule change · TB 26-01 (2026-01 Fastrack)
unclearFA MZR gains alternate Noor P/N 0088-8-00 intake manifold with AT Power runners as option to Elan or Mazda Speed Elite.
In FA, GCR section 9.1.1.2.d, modify as follows: "9. Intake manifold must be unmodified Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT, 1.882” maximum bore diameter at throttle plates. Elan or Mazda Speed equivalent Elite intake manifold may be replaced with unmodified intake Noor P/N 0088-8-00 with intake runners AT Power P/N 13624." "10. Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT intake manifold must use an A aluminum spacer must be used between the intake manifold and cylinder head castings; minimum spacer length is 2.200”."
FC F2000 MZR Spec Line Clarity/Revision Requested
#38927 from Rock Beauchamp · Rule change · TB 26-01 (2026-01 Fastrack)
neutralFC USF2000 Tube Frame may use Hewland LD200 4-speed H-pattern as alternative to Hewland JL-200 5-speed sequential.
In FC Charts table, USF2000 Tube Frame spec line, add the following to the Notes: "Cars originally built with the Hewland LD200 4-speed H-pattern may use that transmission as an alternative to the Hewland JL- 200 5-speed sequential transmission."
FF Formula F Alternative Tire Rule Proposed Clarifications
#39281 from Jay Messenger · Rule change · TB 26-01 (2026-01 Fastrack)
neutralFF clarifies alternative tire eligibility for cars homologated 1989 or earlier with rocker arm or outboard suspension on all four corners.
In FF, GCR section 9.1.1.B.10.e, change as follows: "Alternatively, Formula F cars with rocker arm suspension (e.g., 1987-90 Reynard, Swift DB1,) and/or outboard suspension on at least one chassis end homologated in 1989 or earlier with any combination of rocker arm or outboard suspension on all four corners (e.g., 1987 – 1990 Reynard, Swift DB1) may use the following alternative tires. Note: This rule is intended to allow older cars with the described suspension design to use the alternative tires. It is not to be exploited by modifying cars with push-rods or pull-rods to meet the above requirements or by modifying either end of older cars to push- or pull-rod suspension to be eligible to run the alternative tires. Cars that were homologated in 1989 or earlier with push- or pull-rod suspension on no more than two corners may seek approval to run the alternative tire by utilizing the compliance process outlined in GCR section 8.1.4."
fasterFA Formula 1000 motorcycle-based engine loses maximum compression ratio 14.5:1 limit.
In FA Table 2, Formula 1000 spec line, change the Engine as follows: "Motorcycle-based 4-cycle up to 1000cc, maximum compression ratio 14.5:1;. o Otherwise, current FA engine rules apply."
GTX Please Consider Adding a Spec Line to GTX Table 4 for the RCR T70
#39470 from Peter Jankovskis · Rule change · TB 26-01 (2026-01 Fastrack)
neutralGTX Misc Table 4 adds RCR T70 Coupe with 2200 lbs minimum weight, no restrictor specified.
In GTX-Misc. Table 4, classify RCR70 Coupe: GTX – MISC. TABLE 4 Make Homologation Model Restrictor
A specification table follows in the original; it is not shown here.
FA Change Formula 1000 allowances
#39608 from Club Racing Board · Rule change · TB 26-01 (2026-01 Fastrack)
fasterFA Formula 1000 allows carbon fiber external panels, forward-facing gaps, raises floor to 125mm, adds eight 75×125mm rub blocks, expands diffuser to 110cm with 75mm radius transitions.
In FA Table 2, Formula 1000 spec line, change the Notes as follows: "Car must comply with December 2019 GCR Formula 1000 (FB) Preparation Rules, https://www.scca.com/downloads/48184- gcr-december-2019/download, except as modified by this spec line. The prohibition of using carbon fiber in any external panels or any panels licked by the airstream in Part 3.C of the December 2019 GCR F1000 (FB) Preparation Rules is removed, with the exception that the car's floor pan/undertray must comply with the requirements of Part 2.D of the December 2019 GCR F1000 (FB) Preparation Rules. The prohibition of forward-facing gaps or openings in the bodywork in Part 3.I of the December 2019 GCR F1000 (FB) Preparation Rules is removed. Part 3.D of the December 2019 GCR F1000 (FB) Preparation Rules is modified as follows: "Between the rear of the front tire and the front of the rear tire, no point on the lower surface of the car (the surface
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licked by the air stream) shall be more than 125mm above the plane determined by the reference area designated by the entrant and on a line perpendicular to that reference plane." Part 3.D of the December 2019 GCR F1000 (FB) Preparation Rules is also modified as follows: "A maximum of eight (8) rub blocks of maximum dimension 75mm by 125mm are allowed anywhere on the lower surface of the chassis and may extend below the reference plane." Part 3.E of the December 2019 GCR F1000 (FB) Preparation Rules is modified as follows: "The radius of transitions between the diffuser sides and adjacent horizontal structures may be up to 75mm. The width of the diffuser, as measured between its sides and above any radiused transitions, may not exceed 110cm in any lateral section." The CRB may require the use of Flat Plate Intake Restrictors at any time."
FC Adjust F2000 Metrik ZF2 weight
#39612 from Club Racing Board · Rule change · TB 26-01 (2026-01 Fastrack)
fasterFC F2000 Metrik ZF2 minimum weight reduced to 1220 lbs.
In FC Charts table, F2000 Metrik ZF2 spec line, change the Weight as follows: "1240 1220"
FA Pro Mazda Classification and Performance Enhancement Proposal
#39411 from Stephen Lamana · Rule change · TB 26-02 (2026-02 Fastrack)
fasterFA Pro Mazda: lower intake manifold now unrestricted, throttle body raised to 80mm, wing height must not exceed 99cm, bodywork width must not exceed 132cm.
In FA Table 2, Pro Formula Mazda spec line, change the notes as follows: "All current FA rules apply to areas not covered by this spec line. Apex seals unrestricted. Street port or bridge port allowed. Unmodified OEM l Lower intake manifold required unrestricted, upper intake manifold unrestricted. Balance tube not permitted. Fuel injection only. Maximum 70 80mm T throttle B body. The maximum height of the wing and/or endplates shall must not exceed 99cm (38.98 inches). The overall maximum width of the bodywork behind the front wheels shall must not exceed 132cm (51.97 inches)."
What the rules allowed changed as listed; this does not say what any particular car ran.