Robey Clark 66 letters to Fastrack

2026-03-01 SRF3/SRF SRF3 Spark Plugs

#39899 from Robey Clark · Rule change · TB 26-03 (2026-03 Fastrack)

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."

2026-01-01 FE FE & FE2 Rule Updates

#39484 from Robey Clark · Rule change · TB 26-01 (2026-01 Fastrack)

In FE, GCR section 9.1.1.G.2.G.a.1, add the following:
"NO MODIFICATIONS ARE ALLOWED EXCEPT WHERE SPECIFICALLY AUTHORIZED WITHIN THESE RULES. This includes all fuel
injection and engine management components, including exhaust, cooling, electrical and lubrication systems. All systems are
subject to test procedures and must conform to OEM / SCCA Enterprises specifications as stated and supplied by Enterprises. All
fluids, except fuel, are unrestricted."
In FE, GCR section 9.1.1.G.2.T, add the following:
"If a competitor refuses to give their engine and/or unlabeled parts for testing per a request of the Class Compliance Chief (CCC)
or Chief Steward, the following penalties will automatically be imposed:"

2025-10-01 SRF3/SRF Add HD Oil Cooler

#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)

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."

2025-10-01 FE2/FE FE & FE2 Bubble Tail

#38978 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)

In FE, GCR section 9.1.1.G.2.F.k, change as follows:
"Enterprises bubble tail P/N: WM138014 is allowed for FE and is the only configuration for FE2."

2025-09-01 FE FE & FE2 Rule Updates

#38901 from Robey Clark · Rule change · TB 25-09 (2025-09 Fastrack)

Effective 9/1/25 in FE, GCR section 9.1.1.G.1.A, change as follows:
"Definition
FE’s with the Mazda 2.0L MZR engine will be classed as “FE2” and will use the class designation FE2. The Mazda 2.0L MZR motor
can be used in all SCCA events. It shall run under all FE Preparation rules except as noted below:
a. 2.0L MZR may be run with an Elite 5SPD or a Complete SADEV 6SPD transmission Kit
Must use the following:
b. 2.0L only Intake Manifold Part # WM30106
c. Throttle Body Part # WM591930-Jenvey

A specification table follows in the original; it is not shown here.

2025-09-01 SRF3 SRF Rule Updates

#38853 from Robey Clark · Rule change · TB 25-09 (2025-09 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

2025-04-01 SRF3/SRF Driver Safety & Comfort

#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)

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."

2025-04-01 FE2 Driver Safety & Comfort

#37965 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)

In FE2, GCR section 9.1.1.G.2.E, add the following:
"g. 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."

2024-12-01 FE Brake Line to A-Arm Covers

#37110 from Robey Clark · Rule change · TB 24-12 (2024-12 Fastrack)

In FE, GCR section 9.1.1.G.2.K, add the following:
"g. If used, SCCA Enterprises Part # WM803010 Brake Line to Control Arm covers must be used as delivered and must be securely
fastened with zip ties/tie straps or tape. Part # WM803010 is the only approved part and may serve no other purpose."

2024-10-01 SRF3/SRF Hoosier Tire Decal Placement

#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

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."

2024-10-01 SRF3/SRF Update SRF Brake Rotor Thickness

#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

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”)."

2024-10-01 SRF3/SRF Update SRF3 Air Filter Rule

#36681 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

In SRF, GCR section 9.1.8.D.2.H.23, change as follows:
"Air Filter: P/N WM301020 or K&N RC-9160"

2024-09-01 FE Update on Letter 36620 with new Hoosier Contingency Decal Info

#36625 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)

In FE, GCR section 9.1.1.I.2.M.b, change as follows:
"Five (5) "Hoosier" decals are required in the following locations: One (1) small "Hoosier" decal on the nose or the front shock
cover of the car. One (1) 12" "Hoosier" decal on the outside vertical plane of each front wing plate. One (1) 12" "Hoosier" decal
on the vertical plane of each of the lower floor panels just in front of the rear wheels. Hoosier decals are available, free of
charge, from all Hoosier tire distributors and 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."

2024-09-01 SRF3/SRF Update to Letter 36619 with new Hoosier Contingency Decal Info

#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)

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."

2024-08-01 SRF3/SRF Update Rain Tire Rule and Hoosier Decal Placement

#36436 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)

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

2024-08-01 FE Hoosier Tire Decal Placement

#36435 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)

In FE, GCR section 9.1.8.I.2.M, add the following:
"b. Hoosier FE/FE2 Decal Placement:
Five (5) "Hoosier" decals are required in the following locations: One (1) small "Hoosier" decal on the nose or the front shock
cover of the car. One (1) 12" "Hoosier" decal on the outside vertical plane of each front wing plate. One (1) 12" "Hoosier" decal
on the vertical plane of each of the lower floor panels just in front of the rear wheels. Hoosier decals are available, free of charge,
from all Hoosier tire distributors and SCCA Enterprises."

2024-06-01 SRF3 SRF3 Alternator Pulley Update In

#36095 from Robey Clark · Rule change · TB 24-06 (2024-06 Fastrack)

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."

2024-01-01 FE FE/FE2 rule update

#35269 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)

In FE, GCR section 9.1.1.I.2.P.c, add the following:
"Racer's tape may be used to repair crash damage, or as a precautionary means of securing the body panels or
retaining latches fasteners only. Crash-damage is defined as having occurred during the current event, and the tape should be of
an appropriate color if possible. Taping of body seams is not allowed. Taping across heat exchanger openings as a way to control
temperature is allowed and may serve no other purpose."

2024-01-01 SRF3/SRF SRF / SRF3 Rule Updates

#35268 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)

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:

2024-01-01 SRF3/SRF Update SRF Brake Light Rule v1

#34853 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)

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."

2023-10-01 SRF3/SRF SRF Radiator Rule Update

#34805 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)

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."

2024-01-01 FE Update FE Rain Light Rule

#34707 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)

In FE, GCR section 9.1.1.I.2.N.f, change as follows:
"Any rain light is allowed. Effective 1/1/2024, a rain light that meets FIA Standard 8874-2019, Technical List No. 76, is required as
specified in GCR section 9.3.32.B.2."

2024-01-01 SRF3/SRF Update SRF Rain / Brake Rule

#34706 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)

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."

2023-06-01 SRF3/SRF Hoosier SRF Wet Front Tire Rule Update

#34189 from Robey Clark · Rule change · TB 23-06 (2023-06 Fastrack)

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."

2023-05-01 SRF3/SRF Update SRF Front W2 Rain Tire Part Number

#34118 from Robey Clark · Rule change · TB 23-05 (2023-05 Fastrack)

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Front – Hoosier P/N 46100 1 P185/65R13 W2"

2023-04-01 FE Update FE SADEV Transmission Rule

#33883 from Robey Clark · Rule change · TB 23-04 (2023-04 Fastrack)

In FE, GCR section 9.1.1.I.2.G.b.4.b, change as follows:
"(All SADEV ratios are under review and could be updated prior to sealing date)"

2023-03-01 SRF3 Update SRF Bodywork Fitment Rule

#33765 from Robey Clark · Rule change · TB 23-03 (2023-03 Fastrack)

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

2023-03-01 SRF3/SRF Update SRF Brake Rule

#33469 from Robey Clark · Rule change · TB 23-01 (2023-01 Fastrack)

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;

A specification table follows in the original; it is not shown here.

2022-10-01 FE FE Front and Rear Wing Update & Clarification

#33089 from Robey Clark · Rule change · TB 22-10 (2022-10 Fastrack)

In FE, GCR section 9.1.1.I.2.F.g, change as follows:
"The front wing main plane, front wing secondary elements, front wing support mounts, and front wing endplates assembly and
its related mounting components must be used and mounted as delivered from Enterprises. Any m Modifications to these parts,
except as specifically noted herein, is strictly forbidden are prohibited. The front main wing plane angle is zeroed on the rear
upper aft transmission surface measured with a suitable angle gauge, i.e.: digital level on the top main plane 2 inches outward
from the nose box mounts element may be adjusted +2.5 to -0.5 degrees. It must meet a minimum measurement of negative .5
degrees (angled down in the back) and a maximum measurement of positive 2.5 degrees (angled up in the back). It is acceptable
to shim the main plane to obtain this measurement. Shimming 2 of the 4 verticals through the main element mounting points to

2022-10-01 FE Brake bias adjuster clarification

#33084 from Robey Clark · Rule change · TB 22-10 (2022-10 Fastrack)

In FE, GCR section 9.1.1.I.2.K, add the following:
"f. Driver adjustable manual brake bias is allowed."

2022-09-01 FE Engine Heat Shield & Insulation

#33019 from Robey Clark · Rule change · TB 22-09 (2022-09 Fastrack)

In FE, GCR section 9.1.1.I.2.G.a.17, change as follows:
"A heat shield and heat insulation material may be used between the engine block and the exhaust system and is recommended
for the purpose of protecting hoses, shifter cable, and wiring from the heat of the engine and exhaust. Heat insulation material
may also be used to protect the fuel cell, fuel filter, fuel rail, and fuel lines."

2022-06-01 SRF3/SRF SRF Tire Rule Update

#32614 from Robey Clark · Rule change · TB 22-06 (2022-06 Fastrack)

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Tires: must be run as delivered."

2022-06-01 FE Update FE/FE2 Tire Rule

#32613 from Robey Clark · Rule change · TB 22-06 (2022-06 Fastrack)

In FE, GCR section 9.1.1.I.2.M, change as follows:
"Tires must be run as delivered in sets of 4 as stated below:"

2021-12-01 FE Two FE2 Rule Updates

#31524 from Robey Clark · Rule change · TB 21-12 (2021-12 Fastrack)

In FE, GCR section 9.1.1.I.2.F.j, add language as follows:
"Enterprise’s windscreen Only P/N: WM137000 is allowed as delivered."
In FE, GCR section 9.1.1.I.2.P.c, change as follows:
"Racer’s tape may be used to repair crash damage, or as a precautionary means of securing the body panels or retaining latches.
Crash-damage is defined as having occurred during the current event, and the tape should be of an appropriate color if possible.
Taping of body joints seams is not allowed."

2021-12-01 SRF3/SRF Three Updates to SRF Rules

#31523 from Robey Clark · Rule change · TB 21-12 (2021-12 Fastrack)

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)"

A specification table follows in the original; it is not shown here.

2021-08-01 SRF3/SRF SRF Update Maintenance, Repairs and Seals

#30961 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)

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

2021-08-01 SRF3/SRF SADEV-SRF3 Transmission

#30926 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)

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

A specification table follows in the original; it is not shown here.

2021-08-01 SRF3/SRF SRF Wet Tires

#30849 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)

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

2021-07-01 FE Radiator Screens Clarification

#30792 from Robey Clark · Rule change · TB 21-07 (2021-07 Fastrack)

RM 21-04. In FE, GCR section 9.1.1.I.2.F.e, change as follows:
"Radiator screens are allowed and recommended. Screens may be placed no not protrude more than ¼ inch from in front
of the outside vertical plane of the front of the sidepods."

2021-07-01 FE FE Tire Rule Changes

#30754 from Robey Clark · Rule change · TB 21-07 (2021-07 Fastrack)

In FE, GCR section 9.1.1.I.2.M, make changes as follows:
"WET
Hoosier
Front: P/N: 44195 W3, 22.0 X 7.5-13 (compliant through 12/31/2022)
or P/N: 44196 W3, 22.0 X 8.0-13
Rear: P/N: 44217 W3, 22.0 X 9.0-13
a. A competitor shall start the race on at least 3 tires used in a qualifying session for the race as identified by markings made on
the tires by a race official. It is the responsibility of the competitor to ensure that his or her tires are appropriately marked prior

A specification table follows in the original; it is not shown here.

2021-06-01 SRF3/SRF SRF3 Alternator Pulley

#30684 from Robey Clark · Rule change · TB 21-06 (2021-06 Fastrack)

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"

2021-06-01 FE FE Radiator Screens

#30575 from Robey Clark · Rule change · TB 21-06 (2021-06 Fastrack)

In FE, GCR section 9.1.1.I.2.F.e, add language as follows:
"Radiator screens are allowed and recommended. Screens may be placed no more than ¼ inch from the vertical plane of the
front of the sidepods."

2021-03-01 SRF3/SRF Mandatory identification:

#30223 from Robey Clark · Rule change · TB 21-03 (2021-03 Fastrack)

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."

2020-12-01 FE FE / FE2 Spring Updates

#29689 from Robey Clark · Rule change · TB 20-12 (2020-12 Fastrack)

In Formula Enterprises, GCR 9.1.1.I.2.H.b, change as follows:
"Front Springs: 600 lbs. ±25 lbs. Faulkner Part # WM203008 or Hypercoil Part # WM203011
Rear Springs: 1000 lbs. ±25 lbs. Faulkner Part # WM203009 or Hypercoil Part # WM203012 or
Front Springs: 800 lbs. ±25 lbs. Hypercoil Part # WM203013, Silver
Rear Springs: 900 lbs. ±25 lbs. Hypercoil Part # WM203014, Silver
Effective November 1, 2020, Part # WM203013 Front and Part # WM203014 Rear will be requiredfor FE2 and optional for FE."

2020-12-01 SRF3/SRF SRF Shocks, Springs and Ride Height.

#29688 from Robey Clark · Rule change · TB 20-12 (2020-12 Fastrack)

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:

2020-10-01 FE FE Gurney Flap Spec Update

#29445 from Robey Clark · Rule change · TB 20-10 (2020-10 Fastrack)

In GCR section 9.1.1.I.2.F.g, clarify as follows:
"Gurney flaps are permitted as an option for installation on the trailing edge upper surface of the front wing secondary elements
only, not the wing main plane. They must be attached in a secure fashion, without modification to the wing element except for
mounting hardware. Total height is Only .500" +/- .030" flaps are allowed."
In GCR section 9.1.1.I.2.F.h, clarify as follows:
"Gurney flaps are permitted as an option for installation on the trailing edge upper surface of the wing element. They must be
attached in a secure fashion, without modification to the wing element except for mounting hardware. Total height
is Only .250” +/- .030" flaps are allowed on one or both elements."

2020-05-01 FE FE spring rule update changed to November 1, 2020

#28814 from Robey Clark · Rule change · TB 20-05 (2019-05 Fastrack)

In GCR section 9.1.1.I.2.H.b, change as follows:
"Effective June November 1, 2020, Part # WM203013 Front and Part # WM203014 Rear will be required
for FE2 and optional for FE."

2020-06-01 SRF3 SRF Shocks

#28791 from Robey Clark · Rule change · TB 20-06 (2020-06 Fastrack)

In GCR section 9.1.8.E.1.I, change as follows:
"NO MODIFICATIONS ALLOWED. Effective May 1, 2020, 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. The same brand of shock absorbers must be used in all shock absorber positions on the
car.
All shock absorbers must be sealed by Enterprises. Prior to sealing, the shock absorbers will be rebuilt by
Enterprises or its authorized rebuilders."

2020-05-01 SRF3 Update Bump Stop Rule

#28712 from Robey Clark · Rule change · TB 20-05 (2019-05 Fastrack)

In GCR section 9.1.8.E.1.I, change as follows:
"NO MODIFICATIONS ALLOWED. Bump stop shall remain on shock but may be slit vertically to ease
removal for shock adjustment. Effective May 1, 2020, 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. The same brand of shock absorbers must be used in all shock absorber positions on the car."
In GCR section 9.1.8.E.1.X.h, change as follows:
"Shock Absorbers: 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

2019-12-01 SRF3/SRF SRF / SRF3 Majors & Regional Class Updates

#27723 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

In SRF, GCR section 9.1.8.E, make changes as follows:
"SPEC RACER FORD 3 (SRF/SRF3)"
In SRF, GCR section 9.1.8.E.1, make changes as follows:
"SPEC RACER FORD 2 (SRF) Regional Only Class"
In SRF, GCR section 9.1.8.E.2, make changes as follows:
"SPEC RACER FORD 3 (SRF3)"
In SRF, GCR section 9.1.8.E.2.A, make changes as follows:
"It is the intent of the SRF3, GEN3 a Ford 1.6L conversion, to update the current 1.9L SRF drivetrain for

2020-01-01 FE Request for FE / FE2 preparation rules update

#27722 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

Effective 1/1/2020, in FE, GCR section 9.1.1.I, make changes as follows:
“I. FORMULA ENTERPRISES (FE2/FE) PREPARATION RULES
1. FORMULA ENTERPRISES 2 (FE2) FE2 2.0L MZR
A. Definition
FE’s with the Mazda new optional 2.0L MZR engine will be classed as “FE2” and will use the class
designation FE2. The FE2 will run as a parallel class to the FE (2.3L engine) class. When SCCA Enterprises
is unable to service the FE’s 2.3L engines, the 2.0L MZR engine will become the only Major’s or National
Class competition engine, at a certain time “TBD” the FE 2.3L will a become Divisional or Regional Only

A specification table follows in the original; it is not shown here.

2019-12-01 SRF3/SRF SRF / SRF3 Nose Weight Reduction

#27706 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

In SRF, GCR section 9.1.8.E.1.E.a, change the minimum weight as follows:
"Front 35 32 lbs."

2019-12-01 FE/FE2 FE / FE2 Update Rules

#27624 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

In FE, GCR section 9.1.1.I.8.b, add the following:
"Front Springs: 600 lbs. ±25 lbs. Faulkner Part # WM203008 or Hypercoil Part # WM203011
Rear Springs: 1000 lbs. ±25 lbs. Faulkner Part # WM203009 or Hypercoil Part # WM203012
or
Front Springs: 800 lbs. ±25 lbs. Hypercoil Part # WM203013, Silver
Rear Springs: 900 lbs. ±25 lbs. Hypercoil Part # WM203014, Silver
Effective June 1, 2020, Part # WM203013 Front and Part # WM203014 Rear will be required for FE2 and
optional for FE."

2019-12-01 SRF3/SRF SRF Tire Warmer Rule

#27622 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

In SRF, GCR section 9.1.8.E.1.V.s delete section in its entirety as follows and re-letter as follows:
"It is forbidden to regroove tires."
In SRF, GCR section 9.1.8.E.1.X.f, add new sections as follows:
"Tires:
Dry:
Front – Hoosier P/N 46340 P185/60ZR13
Rear – Hoosier P/N 46350 P205/60ZR13 SRF
Wet:

2019-10-01 FE FE Wet Tire E&O

#27365 from Robey Clark · Rule change · TB 19-10 (2019-10 Fastrack)

In FE, GCR section 9.1.1.I.13, change as follows:
"WET
Hoosier
Front: P/N: 44195 W3, 22.0 X 7.5-13
or P/N: 44196 W3, 22.0 X 7.5 8.0-13
Rear: P/N: 44217 W3, 22.0 X 9.0-13"

2019-07-01 FE FE Tire Update

#27029 from Robey Clark · Rule change · TB 19-07 (2019-07 Fastrack)

In GCR section 9.1.1.I.13, make changes as follows:
"Tires must run in sets of 4 as stated below:
DRY
American Racer (until 05/31/2019)
Front: P/N: JE3C3, 22.0 X 8.0-13S
Rear: P/N: JE3MA, 22.5 X 10.0-13S
or
Front: P/N: JFEC3, 22.0 X 8.0-13S

2019-07-01 SRF3/SRF SRF Dash Windscreen Kit

#27028 from Robey Clark · Rule change · TB 19-07 (2019-07 Fastrack)

In SRF, GCR section 9.1.8.E.1.V, add the following:
"ii. Dash Windscreen Kit, P/N 1180103 or P/N 180102, is allowed."

2020-05-01 SRF3/SRF SRF Bump Stop Correction

#27019 from Robey Clark · Rule change · TB 19-07 (2019-07 Fastrack)

In SRF, GCR section 9.1.8.E.1.X.h, make changes as follows:
"Shock Absorbers: 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. Beginning
05/01/2020 2019, the SCCA Enterprises bump rubber stop P/N 280407 may be used as
delivered with no modification of any kind; if used, maximum of one bump rubber stop per
shock. Effective 05/01/2020, only the SCCA bump stop P/N 280407 may be used as

2019-05-31 SRF3 New SRF Sectional Nose Rule Addition

#26914 from Robey Clark · Rule change · TB 19-06 (2019-06 Fastrack)

In GCR section 9.1.8.E.1.E, add the following:
"NO MODIFICATIONS ALLOWED (except as specified). The SRF multi-piece nose assembly is approved for use."

2019-05-31 FE FE / FE2 Updated Bubble Tail Rule

#26913 from Robey Clark · Rule change · TB 19-06 (2019-06 Fastrack)

In GCR section 9.1.1.I.6, add a new subsection as follows:
"k. Enterprises bubble tail P/N: WM138014 is allowed for both FE and FE2."

2019-05-31 FE FE Anti-Roll Bar Clarification

#26912 from Robey Clark · Rule change · TB 19-06 (2019-06 Fastrack)

In GCR section 9.1.1.I.8.f, change as follows:
"Anti-roll bars (sway bars) may be run disconnected, but not removed. One anti-roll bar link may be removed
from the front, rear, or both ends of the chassis for safety reasons, but no modification of the link or attachments
is permitted."

2019-05-01 SRF3 SRF Brakes and Shock Rule Changes

#26629 from Robey Clark · Rule change · TB 19-05 (2019-05 Fastrack)

In GCR section 9.1.8.E.1.X.g, make changes as follows:
“Brakes: Hawk Blue 9012 pads P/N 801993 or 801994 must be used. Wilwood V vented
rotor P/N 800065 minimum thickness 13.25mm (0.522 in.); shall be used as delivered with no
machining of any kind, P/N 800065. Minimum thickness 13.25mm (0.522”). Rubber caliper
bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185(or A or B).
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

2019-03-01 FE Request to Update Hoosier Rain Tire Part Number for the FE cars

#26235 from Robey Clark · Rule change · TB 19-03 (2019-03 Fastrack)

In GCR section 9.1.1.I.13, make changes to wet tires as follows:
“Front: P/N: 44195 W3, 22.0 X 7.5-13 WET
Rear: P/N: 44217 W3, 22.0 X 9.0-13 WET”