This track has been raced on 2 configurations (Scoring Sidebar Race, 4.05 mi; 4.01 mi). Laps on different configurations are not comparable, so only events on the 4.05 mile layout are shown; switch above to see the others.
Sectors are not comparable across all of these events. Sector times and the theoretical lap use Runoffs 2025, Runoffs 2026 only. Runoffs 2020 (different number of sectors), Runoffs 2024 (different number of sectors) count towards whole-lap times and trap speed only.
One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Todd Vanacore in Runoffs 2024 Run 1 F600, FF, FV, SRF3 Sat (1:38.952; the car's best in any other session was 2:29.930 and the rest of the class's best all week 2:22.944).
3 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 → I4AT 1.26 mi
S2 I4AT → I11 1.65 mi
S3 I11 → I13AB 0.57 mi
S4 I13AB → SF 0.57 mi
SF Spd SF → SFT 0.02 mi
Spd I4AT → I4A 0.02 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
S4
SCCA Ent SRF3
SRF3
84
2:22.944Caleb Roethel
2:27.443Tyler Stephens
2:28.129S Sandy Satullo_III
135.9Bobby Sak
42.227Zach Della
56.352Bobby Sak
28.633Bobby Sak
19.790Tyler Stephens
SCCA Spec Racer Ford Gen 3
SRF3
59
2:29.786TJ Acker
2:29.786TJ Acker
2:31.038Justin Hille
131.9Charles Russell Turner
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
Runoffs 2020 → Runoffs 2024 2020-10-02 to 2024-10-01
SRF3 SRF Shocks, Springs and Ride Height.
#29688 from Robey Clark · Rule change · TB 20-12 (2020-12 Fastrack)
neutralSRF shocks, springs, bump stops sealed; rear springs 412-429 lbs/in P/N 280390 only; previous parts no longer allowed.
In SRF, GCR section 9.1.8.E.1.I, change as follows: "NO MODIFICATIONS ALLOWED. Only SCCA Enterprises sealed Penske shocks P/N 280396 shall be used. Only front spring P/N 280387 or P/N RO28037 shall be used. Only rear spring P/N 280390 shall be used. Effective May 1, 2020, o Only the SCCA Bump Stop P/N 280407 may be used, with no modification of any kind. Bump stops are optional. If used, only one bump stop per shock is permitted." "All shock absorbers must be sealed by SCCA Enterprises. Prior to sealing, the shock absorbers will shall be rebuilt by SCCA Enterprises or its authorized rebuilders." In SRF, GCR section 9.1.8.E.1.X, change as follows:
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"c. Rear Springs: 412-429 lbs./in Enterprises P/N 280390 or previous Enterprises supplied part (ex.RO280388 or RO280389)." "h. Shock Absorbers: Only the Penske shock P/N 280396 with spec valving shall be used as a sealed assembly, with no modification of any kind. If shock seals are damaged in any way, the shock must be sent to an authorized SCCA Enterprises service center for verification and resealing at the competitor’s cost. Effective May 1, 2020, o Only the SCCA Bump Stop P/N 280407 may be used, with no modification of any kind. Bump stops are optional. If used, only one bump stop per shock is permitted." "i. Ground Clearance: Minimum is 2.75 inches measured at the frame on the front and rear axle lines without driver, as raced."
SRF3 Mandatory identification:
#30223 from Robey Clark · Rule change · TB 21-03 (2021-03 Fastrack)
neutralSRF and SRF3 mandatory identification simplified: removed Ford Performance and Blue Oval decals, kept Hoosier logo placement.
In SRF, GCR section 9.1.8.E.2.B, change as follows: "Mandatory identification: "SRF3" near the side car numbers,. Approved (2) “Ford Performance” on each sideof the engine cover plus a Ford Blue Oval on the center of the Nose & (2) “Performance Electronics” on eachside of the tail. "Hoosier" logo (4) on both sides front lower outer corners of the nose, and each side of the tail."
SRF3 SRF3 Alternator Pulley
#30684 from Robey Clark · Rule change · TB 21-06 (2021-06 Fastrack)
slowerSRF3 alternator pulley restricted to P/N G902130 or G902130A, 12oz minimum weight.
In SRF, GCR section 9.1.8.E.2.H.17, add the following: "Alternator Pulley: P/N G902130 or P/N G902130A. 12oz minimum weight"
SRF3 SRF Wet Tires
#30849 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)
neutralSRF wet tyres add Hoosier P185/60R13 W2 front and P205/60R13 W2 rear as alternatives to H20.
In SRF, GCR section 9.1.8.E.1.X.f, make changes as follows: "Dry: Front – Hoosier P/N 46340 P185/60ZR13 SRF Rear – Hoosier P/N 46350 P205/60ZR13 SRF Wet: Front – Hoosier P/N 46100 P185/60R13 H20 Rear – Hoosier P/N 46105 P205/60R13 H20 or
#30926 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)
unclearSRF adds SADEV-SRF3 6-speed sequential option with final drive 3.20 versus OEM 5-speed 3.85.
In SRF, GCR section 9.1.8.E.2.K, make changes to gear ratios as follows: "Gear Ratios: Ford/Mazda OEM 5-Speed: 1st 3.42 : 1 2nd 1.84 : 1 3rd 1.29 : 1 4th 0.97 : 1 5th 0.77 : 1
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Final Drive Ratio: 3.85 OR SADEV-SRF3 6-Speed Sequential (beginning Oct. 4, 2021):
A specification table follows in the original; it is not shown here.
SRF3 SRF Update Maintenance, Repairs and Seals
#30961 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)
neutralSRF seal procedures clarified: unsealed components need CSR inspection and logbook notation instead of engine removal.
In SRF, GCR section 9.1.8.E.1.C, make changes as follows: "If any official Enterprises seal is broken, by an Enterprises Customer Service Rep. (CSR) emergency field repair, accident, or intent, the procedures outlined under C.20., section S shall be followed. Parts with an Enterprises part number having the prefix "10" are considered to be unrestricted, providing provided their dimensions are comparable." In SRF, GCR section 9.1.8.E.1.S, make changes as follows: "SCCA Enterprises' seals on engine are required for all races must be present on driveline components in designated locations for all SCCA sanctioned events. Any competitor who runs participates in an event without all proper engine seals in the required locations shall have his engine removed and shipped to Enterprises for testing and sealing after that event must remove his
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unsealed component and it must be inspected by a Customer Service Rep. (CSR) or Enterprises. Notation shall be made in the vehicle logbook and seals checked prior to the next event. The competitor will be responsible for all cost incurred by this procedure. regardless of the findings, and If the component is found to be out of specification, the competitor is subject to penalty by the SOM if engine is found to be not as specified." "SCCA Enterprises' seals are required on all SPEC RACER FORD engines and transmissions."
SRF3 Three Updates to SRF Rules
#31523 from Robey Clark · Rule change · TB 21-12 (2021-12 Fastrack)
unclearSRF front wet tire changes from P185/60R13 H20 to P185/65R13 W2; SRF3 adds mandatory G301048 restrictor plate Jan. 1, 2022.
In SRF, GCR section 9.1.8.E.1.X.f, change as follows: "Wet: Front – Hoosier P/N 46100 P185/60R13 H20 Rear – Hoosier P/N 46105 P205/60R13 H20 Ground clearance is 2.5" with driver as raced when H20 tires are used. or Front – Hoosier P/N 46100 P185/60 65R13 W2 (effective Oct. 4, 2021) Rear – Hoosier P/N 46105 P205/60R13 W2 (effective Oct. 4, 2021)"
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In SRF, GCR section 9.1.8.E.2.H.24, change as follows: "Air Box: P/N G592230 Mandatory unmodified As delivered, except as noted under body work, Air Box floor vent must remain open and un-obstructed." In SRF, GCR section 9.1.8.E.2.H, add a new section as follows: "25. SRF3 Restrictor plate: P/N G301048 As delivered, installed between throttle body and intake manifold. Mandatory Jan. 1,
A specification table follows in the original; it is not shown here.
SRF3 SRF Tire Rule Update
#32614 from Robey Clark · Rule change · TB 22-06 (2022-06 Fastrack)
neutralSRF tire rule wording changed from 'Tires: must be run as delivered' to 'Tires must be run as delivered.'
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Tires: must be run as delivered."
SRF3 Brake, seal, and air filter clarifications
#32670 from Club Racing Board · Rule change · TB 22-06 (2022-06 Fastrack)
fasterSRF brake rotor minimum thickness reduced from 13.25 to 12.20mm; seal and air filter rules clarified.
In SRF, GCR section 9.1.8.D.1.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall be used as delivered with no machining of any kind. Minimum thickness 13.25 12.20mm (0.522 0.481"). The 1985 Renault Alliance solid front rotor (Reference: Bendix PRT1318 or Centrix 121.11004) may be used on front, rear, or both axles, but each axle must be paired to the same type rotor. Rubber caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185." In SRF, GCR section 9.1.8.D.2.H, change as follows: "No performance M modifications of any kind. SCCA Enterprises’ seals shall be intact.
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(2) on cam cover, (2) on the oil pan, (1) on the each cam shaft. Automatic Drivetrain Violation if removed." In SRF, GCR section 9.1.8.D.2.H.23, change as follows: "Air Filter: P/N WM301020 or K&N RC-9160"
SRF3 Update SRF Brake Rule
#33469 from Robey Clark · Rule change · TB 23-01 (2023-01 Fastrack)
slowerSRF Renault Alliance solid front rotors banned; restrictor reduced 35mm to 34mm for 2011+ Kawasaki; minimum weight increased to 1100 lbs for 2009+ stock engines.
In SRF, GCR section 9.1.8.D.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall be used as delivered with no machining of any kind. Minimum thickness 12.20mm (0.481"). The 1985 Renault Alliance solid front rotor (Reference: Bendix PRT1318 or Centrix 121.11004) may be used on front, rear, or both axles, but each axle must be paired to the same type rotor. The Renault Alliance solid front rotors may not be used. Rubber caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185. Original caliper pistons may be replaced with vented caliper piston P/N 1196184; no other modification allowed. Wilwood caliper with bracket universal fit P/N 800038 may be used as delivered with no modification of any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as delivered with no modification of any kind;
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maximum of one spring per caliper." P2 Engine Table Spec Line Engine Series
A specification table follows in the original; it is not shown here.
SRF3 Update SRF Bodywork Fitment Rule
#33765 from Robey Clark · Rule change · TB 23-03 (2023-03 Fastrack)
neutralSRF3 tail sections allowed on SRFs with GEN3 airbox shimming up to 19 mm; alternate dash panel P/N 180100 or 180101 relocated in rules.
In Spec Racer Ford, GCR section 9.1.8.D.1.E, change as follows: "j. Optional Bodywork Modification: Viewing the tail section of the car from behind, draw a vertical line at the left and right ends of the outer vents from the bottom edge of the bodywork up to a point two (2) inches below the crease at the lower edge of the vented panel. Make a vertical cut at each line. The horizontal cut is to be one (1) inch below the crease at the base of the vented panel. Leave a one (1) inch radius at each corner. Air Scoop (P/N 190000) must be installed in conjunction with rear cutout per Enterprises installation instructions. SRF3 tail sections are allowed on SRFs. For purposes of tail section to center section fitment with the GEN3 airbox, shimming is allowed at the rear of the center section. Shim material may be up to 19 mm (0.75") thick along the 1" upper square sidepod
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tube. Mounting location cannot be modified or added. Shim material must be securely attached, but must not be welded. An alternate dash panel has been approved for use in Spec Racer Fords. The dash will be furnished by Enterprises only. P/N 180100 or 180101 k. Required Bodywork Modification: A 22.5" diameter wheel arch shall be cut in each side of the tail section. Viewing the tail section from the side, draw a vertical line at the drive axle centerline. Locate the top of the wheel arch at a point measured from the bottom edge of the tail section 9.25" vertically along the centerline. The 22.5" diameter circle intersects the bottom edge of the tail section 11.1" either side of the centerline. The tail section may be reinforced in the forward and aft portions of the wheel arch. Dimension tolerance is +/- 0.75". l. An alternate dash panel has been approved for use in Spec Racer Fords. The dash will be furnished by Enterprises only. P/N 180100 or 180101."
SRF3 Update SRF Front W2 Rain Tire Part Number
#34118 from Robey Clark · Rule change · TB 23-05 (2023-05 Fastrack)
neutralSRF Hoosier front rain tyre part number changes from 46100 to 46101 P185/65R13 W2.
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Front – Hoosier P/N 46100 1 P185/65R13 W2"
SRF3 Hoosier SRF Wet Front Tire Rule Update
#34189 from Robey Clark · Rule change · TB 23-06 (2023-06 Fastrack)
unclearSRF Hoosier wet front tire updated to P/N 46100 P185/60R13 H20 or W2.
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Wet: Front – Hoosier P/N 46100 P185/60R13 H20 or W2 Rear – Hoosier P/N 46105 P205/60R13 H20 or W2 Ground clearance is 2.5" with driver as raced when P185/60R13 (H20 or W2) tires are used."
SRF3 SRF Radiator Rule Update
#34805 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)
neutralSRF radiator rule clarified: P/N 480466 replaceable with Automotive P/N 1R698, CU698 or manufacturer equivalent with documentation.
In SRF, GCR section 9.1.8.D.1.V.j, change as follows: "Radiator - Enterprises new style P/N 480465 (requires baffle P/N 480464) or P/N 480466 can be used. P/N 480466, may can be replaced with Automotive P/N 1R698, CU698 or equivalent OEM manufacturer justified by one cross-reference chart equivalent, as long as the size, shape, and material are the same as the original P/N. The capacity, core thickness, etc., cannot be changed even if allowed under the above. The competitor is responsible for providing this documentation of the cross-reference P/N."
SRF3 Update SRF Rain / Brake Rule
#34706 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)
neutralSRF rain/brake light now requires Super Bright LEDs Inc. P/N PT-STRB-R24 with specific connector and rain light switch.
In SRF, GCR section 9.1.8.D.1.W.l, change as follows: "A Super Bright LEDs Inc. rain / brake light comprised of a single standard trailer oval lamp, 2-1/4 inches x 6-1/2 inches, with incandescent or LED illumination, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the wiring harness. The secondary filament of the brake light assembly shall must be connected to a switch enabling its use as a rain light."
SRF3 Update SRF Brake Light Rule v1
#34853 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)
neutralSRF requires Super Bright LEDs P/N PT-STRB-R24 rain/brake light with strobing capability and specific wiring.
In SRF, GCR section 9.1.8.D.1.W.l, change as follows: "A Super Bright LEDs Inc. P/N PT-STRB-R24 (SCCA Enterprises P/N 180427A) rain / brake light, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the wiring harness. An SCCA Enterprises P/N 1190503 Strobing Brake Light Pigtail is required. The secondary filament of the brake light assembly must be connected to a switch enabling its use as a strobing rain light. A Strobing Brake Light Kit P/N 1168003 is available, which includes the brake light and pigtail."
SRF3 SRF / SRF3 Rule Updates
#35268 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)
neutralSRF adds brake duct and pedal extension rules, rear shift cable clamp option, camber limit to 5.0°, radiator opening height 3.5" ±0.5", and P2 engine restrictor changes.
In SRF, GCR section 9.1.8.D.1.H, add the following: "NO MODIFICATIONS ALLOWED. Front brake ducts are required, attached to the openings in the lower radiator baffles, any flexible 4" duct material allowed, installed length minimum 12" maximum 36" in length. Must be securely fastened, Bracket Part # P/N 800368 can be used. Shall Must serve no other purpose. An extension may be welded to the side of the throttle pedal to improve heel-and-toe braking. Master cylinder casting / location must be used as delivered on P/N 180110 Pedal Mounting support. Aeroquip style -3 braided stainless flex lines only, must attach to all brake components without modification. Brake pad "anti-rattle" clips must be removed." In SRF, GCR section 9.1.8.D.1.V, add the following:
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"ii. Rear SADEV shift cable aluminum two-piece style clamp may be used. The P/N WM302007A clamp must serve no other purpose." In SRF, GCR section 9.1.8.D.1.X.k, add the following: "Negative camber shall must not exceed 5.0 degrees absolute maximum front and rear." In SRF, GCR section 9.1.8.D.1.AA.b, add the following: "2. Height of the radiator opening vertical surface 3 1/2“ +/- 1/2"." P2 Engine Table B.1 2008 and older Stock Suzuki, Yamaha, Honda, BMW 38.5mm P2 Engine Table B.2 Not required P2 Engine Table B.3 38.5mm Modified Engine 950 lbs. 1005cc max P2 Engine Table B.1 2008 and older 37mm P2 Engine Table B.2 Not required P2 Engine Table B.3 39mm Stock Engine 1050 lbs.
SRF3 SRF3 Alternator Pulley Update In
#36095 from Robey Clark · Rule change · TB 24-06 (2024-06 Fastrack)
fasterSRF3 alternator pulley minimum weight reduced from 12 oz to 11 oz.
SFR3, GCR section 9.1.8.D.2.H.17, change as follows: "Alternator Pulley: P/N G902130, or P/N G902130A, or P/N G902131 (six row). 12 11 oz minimum weight."
SRF3 Update Rain Tire Rule and Hoosier Decal Placement
#36436 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)
slowerSRF wet tires: P185/60R13 H20/W2 option removed; P185/65R13 W2 front now required with P205/60R13 W2 rear.
In SRF, GCR section 9.1.8.D.1.X.f, change as follows: "Wet: Front – Hoosier P/N 46100 P185/60R13 H20 or W2 Rear – Hoosier P/N 46105 P205/60R13 H20 or W2 Ground clearance is 2.5” with driver as raced when P185/60R13 (H20 or W2) tires are used. OR Front – Hoosier P/N 46101 P185/65R13 W2 Rear – Hoosier P/N 46105 P205/60R13 W2
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1. It is forbidden to regroove tires. 2. The use of tire warmers or cooling methods other than natural air convection or conduction is prohibited. The penalty for violation will be the loss of qualifying times and/or the disqualification of race results. 3. Hoosier SRF/SRF3 Decal Placement: Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including SCCA Enterprises."
SRF3 Update to Letter 36619 with new Hoosier Contingency Decal Info
#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)
neutralSRF Hoosier decal requirement reduced from four decals in specific locations to three decals with simpler placement rules.
In SRF, GCR section 9.1.8.D.1.X.f.3, change as follows: "Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including SCCA Enterprises Per Hoosier's contingency program, three (3) decals are required to qualify for contingency awards. One (1) decal must be located on each side of the car and one (1) decal must be visible on the front."
SRF3 Update SRF3 Air Filter Rule
#36681 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)
unclearSRF3 air filter rule removes K&N RC-9160 option, leaving only P/N WM301020 allowed.
In SRF, GCR section 9.1.8.D.2.H.23, change as follows: "Air Filter: P/N WM301020 or K&N RC-9160"
SRF3 Update SRF Brake Rotor Thickness
#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)
slowerSRF brake rotor minimum thickness increases from 12.20mm to 13.25mm, Wilwood vented rotor P/N 800065.
In SRF, GCR section 9.1.8.D.1.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall must be used as delivered with no machining of any kind. Minimum thickness 12.20mm (0.481”) 13.25mm (0.522”)."
SRF3 Hoosier Tire Decal Placement
#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)
neutralSRF3 Hoosier logo placement changes from four decals to three decals in different locations.
In SRF, GCR section 9.1.8.D.2.B, change as follows: "Mandatory identification: "SRF3" near the side car numbers. "Hoosier" logo (4) on both sides front lower outer corners of the nose and each side of the tail. Three (3) "Hoosier" logos, one (1) on each side of the car and one (1) on the center front of the car."
Runoffs 2024 → Runoffs 2025 2024-10-01 to 2025-09-29
SRF3 Driver Safety & Comfort
#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)
neutralSRF drivers with disabilities may modify seat and controls for safety and comfort with approval and logbook notation.
In SRF, GCR section 9.1.8.D.1.D, add the following: "f. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard configuration."
SRF3 Update SADEV transmission specs
#37992 from Club Racing Board · Rule change · TB 25-04 (2025-04 Fastrack)
Effective 9/1/25 in SRF, GCR section 9.1.8.D.1.V.ff, add the following: "SRF3 Oil Cooler, P/N G480503 may be used as mounted per the GEN3 Assembly Manual. No fan permitted for SRF. HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual." Effective 9/1/25 in SRF, GCR section 9.1.8.D.X.g, change as follows: "Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 must be used as delivered with no machining of any kind. Minimum thickness 13.25mm (0.522”). The Renault Alliance solid front rotors may not be used. Rubber caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185. Original caliper pistons may be replaced with vented caliper piston P/N 1196184; no other modification allowed. Wilwood caliper with bracket universal fit P/N 800038
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may be used as delivered with no modification of any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as delivered with no modification of any kind; maximum of one spring per caliper. 1. Hawk Blue pads P/N 801993 only 2. Wilwood Vented Rotor P/N 800065 only, as delivered, with no machining of any kind. Minimum thickness 13.25mm (0.522") 3. Wilwood universal caliper Kit P/N 1180008 as delivered, caliper only P/N 800038; Wilwood knock back spring P/N 800045 may be used as delivered, with no machining of any kind, and only one spring per caliper 4. Renault caliper rubber bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185A 5. Renault caliper piston may be replaced with P/N 1196184 vented piston as delivered, with no machining of any kind 6. Girling .750" Master Cylinder P/N 880358 as delivered, with no machining of any kind 7. Wilwood .750" Master Cylinder P/N 880357 as delivered, with no machining of any kind 8. Tilton .750" Master Cylinder P/N 880360 as delivered, with no machining of any kind"
Runoffs 2025 → Runoffs 2026 2025-09-29 to 2026-09-28
SRF3 Add HD Oil Cooler
#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)
neutralSRF3 adds HD Oil Cooler P/N G1148500 as alternative to standard cooler P/N G480503.
In SRF, GCR section 9.1.8.D.1.V.ff, change as follows: "SRF3 Oil Cooler, P/N G480503 or HD Oil Cooler P/N G1148500 may be used as mounted per the GEN3 Assembly Manual. No fan permitted for SRF. HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual."
SRF3 SRF3 Spark Plugs
#39899 from Robey Clark · Rule change · TB 26-03 (2026-03 Fastrack)
neutralSRF3 spark plugs restricted to NGK LTR7IX-11 P/N G301041 only, washers and sealing rings prohibited.
In SRF, GCR section 9.1.8.D.2.H.18, add the following: "Spark Plugs: P/N G301041 ONLY NGK LTR7IX-11 / Washers or sealing rings are not allowed for any purpose."
What the rules allowed changed as listed; this does not say what any particular car ran.