GTL + F5 at Michelin Raceway Road Atlanta

2021-06-01 F5 Request to Allow Rotax 593 HO Engine

#30712 from Jack Walbran · Rule change · TB 21-06 (2021-06 Fastrack)

Summary

As printed in Fastrack

In F500, GCR section 9.1.1.D.14, Snowmobile Derived Engines, add the following:
"Rotax 593 in a carbureted, non-HO or HO version;"
In F500, GCR section 9.1.1.D.14.A, add the following:
"38mm intake boots, BPP 420867860 (last 6 digits 867860 are embossed on the boot), BPP 420867862 (last 6 digits 867862 are
embossed on the boot), or Kimpex 07-100-33, shall be used for the 493 and 593 non-HO engines. 38mm intake boots, BPP
420867882 (last 6 digits 867882 are embossed on the boot) shall be used for the 2003 593 HO engine, and BPP 420867879 (last 6
digits 867879 are embossed on the boot) shall be used for the 2004-2007 593 HO engines."
In F500, GCR section 9.1.1.D.14.I.3, add the following:

2021-07-01 GTL Request clarification for the Honda B18a,bVS B18c

#30482 from Joe Harlan · Rule change · TB 21-07 (2021-07 Fastrack)

Summary

As printed in Fastrack

In GTL Engines - HONDA, change Split B18 as follows:
GT Engines - HONDA
Engine Type Bore x
Stroke
(mm)
Disp.
(CC)
Head Type Valves / Cyl. Fuel Induction Weight (lbs) Notes

2021-07-01 GTL Request to Allow Hood Bulge on Nissan B13 Sentra

#30504 from Jameson Savage · Rule change · TB 21-07 (2021-07 Fastrack)

Summary

As printed in Fastrack

In GTL Spec Lines, Sentra (B13), add to Notes as follows:
"May have hood bulge (Max. of 1.5”H x 10.0” L x 6.0 W)"

2021-07-01 GTL Request BMW E21 Classing

#30582 from Jacob Lueder · Rule change · TB 21-07 (2021-07 Fastrack)

Summary

As printed in Fastrack

In GT Cars - BMW, add the following:
GT Cars - BMW
Model Years Body Style Drive-
line
Wheel-
base (in)

2021-08-01 GTL Request to Update GTA Obsolete Part Numbers

#30615 from Butch Kummer · Rule change · TB 21-08 (2021-08 Fastrack)

Summary

As printed in Fastrack

In GCR, Section 9.1.2.G.16., change as follows:
"0-80541-1 0-80541-2"
In GCR, Section 9.1.2.G., Appendix Z 5.a. change as follows:
"0-80541-1 0-80541-2"
In GCR, TA2 Appendix B.3.4, change as follows:
"#6010 6014X"

2021-08-01 F5 Clarify allowable assisted shifting systems

#30871 from Formula/Sports Racing Committee · Rule change · TB 21-08 (2021-08 Fastrack)

Summary

As printed in Fastrack

In F5, GCR section 9.1.1.D.6.B.4, make changes as follows:
"All gear changes must be initiated and made completed by the driver. Only mechanical gear shifting mechanisms are permitted.
This may include cables, rods, or other mechanical linkage systems. All other shifting mechanisms are not permitted. This
prohibition shall include electric solenoid shifters, air-shifters, etc. and other devices not mechanically actuated and controlled
completely by the driver. Devices that allow pre-selected gear changes and closed-loop systems that use feedback from sensors
to vary the timing of the gear selection process are also prohibited.
Devices that interact with the throttle, ignition, or fuel system during a shift operation (for example: ignitions cuts, flat shifters,
blippers) are permitted, but no such devices shall remove the driver's control of the gear change initiation, gear selection or

2021-08-01 F5 Request to correct terminology

#30976 from Jim Murphy · Rule change · TB 21-08 (2021-08 Fastrack)

Summary

As printed in Fastrack

In F5, GCR section 9.1.1.D.1, change as follows:
"A class for single seat, open wheel, rigid limited suspension race cars using either a snowmobile-derived engine and drive
components or a 600cc motorcycle engine."

2021-10-01 GTL Request car classification

#31032 from Bryan Scheible · Rule change · TB 21-10 (2021-10 Fastrack)

Summary

As printed in Fastrack

In GT3 Engines - VOLKSWAGEN, classify Fun Cup Beetle EVO3 as follows:
GT3 Engines - VOLKSWAGON

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

2022-01-01 F5 Data Box Mounting Plate

#31638 from Glen Thielke · Rule change · TB 22-01 (2022-01 Fastrack)

Summary

As printed in Fastrack

In F5, GCR section 9.1.1.D, add a new section as follows:
"19. All F5 cars competing in Majors Races and the Runoffs must have the AIM part #X47KPFSOLO2R0 data box mount installed
on the vehicle to provide the necessary mounting of the AIM Solo or Solo 2 data box. The mounting surface is to be approximately
oriented either horizontally or vertically either parallel or perpendicular to the longitudinal axis of the car and must be accessible
from the exterior of the car with the driver on board -- it should have a view of the sky and not be located under carbon fiber or
metallic bodywork. Sufficient space should be left between the mounting plate and the surface to which it is attached to permit
the use of zip ties/tie straps to restrain the data box to the mounting plate. The purpose of this requirement is to allow the
random placement of data boxes on cars on pre-grid by SCCA assigned personal and the collection of the box when the car exits

2022-03-01 GTL Request to Classify Ginetta G40 in GTL

#31599 from Richard Gray · Rule change · TB 22-03 (2022-03 Fastrack)

Summary

As printed in Fastrack

In GT Cars - Ginetta G40 as follows:
GTL Cars - GINETTA
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Ginetta G40 2002-

2022-03-01 F5 E&O class name

#32194 from Formula/Sports Racing Committee · Rule change · TB 22-03 (2022-03 Fastrack)

Summary

As printed in Fastrack

In F500, GCR section 9.1.1.D.19, change as follows:
"All F500 cars competing in Majors Races and the Runoffs must have the AIM part #X47KPFSOLO2R0 data box mount installed
on the vehicle to provide the necessary mounting of the AIM Solo or Solo 2 data box."

2022-06-01 F5 593 carb boot availability and oil pump clarification

#32527 from CARL WASSERSLEBEN · Rule change · TB 22-06 (2022-06 Fastrack)

Summary

As printed in Fastrack

In F500, GCR section 9.1.1.D.14.A, change as follows:
"Carburetor mounting shall must be of individual runners, with no balance pipes, and no plenums unless fitted as standard as on
the Rotax 493 and 593 engines. The use of the intake plenum/resonator on the 493 and the 593 engines is optional. If the intake
resonator is removed the resulting holes MUST be completely plugged and the plugs must be held in place by appropriate
clamps. Plugs may be of any material and must serve no other purpose than to plug the holes originally intended for the
resonator. 38mm intake boots, BPP 420867860 (last 6 digits 867860 are embossed on the boot), BPP 420867862 (last 6 digits
867862 are embossed on the boot), or Kimpex 07-100-33, or Moto Tassinari V-Force 3 Reed Valve System V3124-873B-
2 shall must be used for the 493 and 593 non-HO engines. 38mm intake boots, BPP 420867882 (last 6 digits 867882 are

2022-07-01 F5 Clarify stepped exhaust header references

#32743 from Club Racing Board · Rule change · TB 22-07 (2022-07 Fastrack)

Summary

As printed in Fastrack

In F500, GCR section 9.1.1.D.15.G, add the following:
"The exhaust system and exhaust manifold are unrestricted, within SCCA safety regulations, except that
stepped diameter exhaust headers are not allowed. This prohibition does not include the exhaust flange area immediately
adjacent to the cylinder head."
In F500 Engine Table, Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 spec lines, add the following:
"Stepped diameter exhaust headers are not allowed"

2022-08-01 F5 Ensure availability of ECU for Rotax engines

#32695 from Carl Wassersleben · Rule change · TB 22-08 (2022-08 Fastrack)

Summary

As printed in Fastrack

In F500, GCR section 9.1.1.D.14, add a new section as follows:
"N. Alternate ECU for Rotax engines: The use of the Ingi Tech Sparker ignition part number DCP-CDI-P2 is permitted."

2022-09-01 GTL Tail lights on all GT category race cars.

#32799 from John Mills · Rule change · TB 22-09 (2022-09 Fastrack)

Summary

As printed in Fastrack

In GT, GCR Section 9.1.2.F.7.a.6:
"Glass and/or plastic headlights, front parking lights, front signal lights, lenses, and bulbs shall be removed. Headlight openings
shall be covered with a wire mesh screen or panel having the same contour as the original lens, mounted so that the headlight
bezel/rim remains in place, maintaining the standard appearance of the Production automobile. Side marker light assemblies
shall be removed and the resulting openings covered with a plate whose dimensions do not exceed those of the original parts;
side marker lights that are an integral part of the taillight assembly cannot be removed. Other lighting parts and operating
mechanisms may be removed. In the case of pop-up headlights, the entire assembly may be removed and the opening covered
with a screen or plate (as above, without the headlight bezel/rim requirement) which provides a stock appearance. It is not

2022-09-01 F5 Intake Boots Correction

#33028 from Formula/Sports Racing Committee · Rule change · TB 22-09 (2022-09 Fastrack)

Summary

As printed in Fastrack

In F500, GCR section 9.1.1.D.14.A, change as follows:
“Carburetor mounting must be of individual runners, with no balance pipes and no plenums unless fitted as standard as on the
Rotax 493 and 593 engines. The use of the intake plenum/resonator on the 493 and 593 engines is optional. If the intake
resonator is removed the resulting holes MUST be completely plugged and the plugs must be held in place by appropriate
clamps. Plugs may be of any material and must serve no other purpose than to plug the holes originally intended for the
resonator. 38mm i Intake boots, BPP 420867860 (last 6 digits 867860 are embossed on the boot), BPP 420867862 1 (last 6 digits
867862 1 are embossed on the boot), or Kimpex 07-100-33, or Moto Tassinari V-Force 3 Reed Valve System V3124-873B-2 must
be used for the 493 and 593 non-HO engines. Moto Tassinari V-Force V3120-794A-2 Reed Valve System may be used with any

2022-11-01 GTL Engine Request

#33064 from Isaac Preston · Rule change · TB 22-11 (2022-11 Fastrack)

Summary

As printed in Fastrack

In GTL Spec Lines, Engines - TOYOTA, add as follows:

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

2022-12-01 GTL Fiat HP Limited Prep X1/9 Weight in GTL

#33297 from Larry Svaton · Rule change · TB 22-12 (2022-12 Fastrack)

Summary

As printed in Fastrack

In Gt Light Engines Spec Lines, 1500 Limited Prep (Engine & Chassis), change weight as follows:
"2000 → 1835"

2022-12-01 GTL GT2 (TA2)/GTA Part Number Update

#33315 from Butch Kummer · Rule change · TB 22-12 (2022-12 Fastrack)

Summary

As printed in Fastrack

In GCR Appendix L-TA2 rules, Addendum A, change A.2. as follows:
"The throttle body must be either a GM 90mm, electronic, part #1257 → 0790, or Edelbrock 90mm, mechanical, part 33869 or
#3870."
In GTA, GCR Section 9.1.2.G.3., change as follows:
"The throttle body must be either a GM 90mm, electronic, part #1257 → 0790, or Edelbrock 90mm, mechanical, part 33869 or
#3870."

2022-12-01 GTL Request to add Ford Festiva to GTL

#33335 from Jason Martin · Rule change · TB 22-12 (2022-12 Fastrack)

Summary

As printed in Fastrack

In GT Cars - GT Light Spec Lines, add Ford Festiva as follows:
GT Cars – GT Lite
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Ford Festiva 1988-1993 3 Dr.

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

2023-01-01 GTL Toyota 4A-F and 4A-FE 1.6L DOHC 16V Engine Request

#33415 from Scott Schick · Rule change · TB 23-01 (2023-01 Fastrack)

Summary

As printed in Fastrack

In GT2 Spec Lines, Engines - Toyota, add the following Spec Line:
Engines - TOYOTA
Engine
Family
Engine Type Bore x

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

2023-02-01 GTL Toyota 4Y Engine Classification Request

#33562 from Scott Schick · Rule change · TB 23-02 (2023-02 Fastrack)

Summary

As printed in Fastrack

In GTL Spec Lines, Engines - Toyota, add to Notes as follows:
3K: "May use 4Y block only"
4K: "May use 4Y block only"
5K: "May use 4Y block only"

2023-05-01 GTL Please classify Fields Cardinal V8

#33784 from James Rogersn · Rule change · TB 23-05 (2023-05 Fastrack)

Summary

As printed in Fastrack

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

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

2023-11-01 GTL Weight for Nissan Sentra/200SX A 1400's

#34918 from Wilson Wright Jr · Rule change · TB 23-11 (2023-11 Fastrack)

Summary

As printed in Fastrack

In GTL Spec Lines, GTL Engines - NISSAN, Engine Family A14, change weight as follows:
"1850 1800"

2023-12-01 GTL 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)

Summary

As printed in Fastrack

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

2023-12-01 GTL Small Engines in GT Lite

#34842 from Peter Zekert · Rule change · TB 23-12 (2023-09 Fastrack)

Summary

As printed in Fastrack

In GCR, GTL Cars, create new sub chart as follows:
In GTL change weights for unrestricted engines under 1399cc as follows:
Alfa Romeo 1130cc 1605 1565
1290cc 1605 1565
1357cc 1605 1565
AMC/Renault 1289cc 1660 1619
Triumph Spitfire 1147cc 1530 1492
mini 1275cc 1570 1531

2023-12-01 GTL Request to Classify Honda Fit body in GTL

#35020 from Peter Zekert · Rule change · TB 23-12 (2023-09 Fastrack)

Summary

As printed in Fastrack

In GTL Honda Cars, classify Honda Fit as follows:
GTL HONDA Cars -
Model Years Body Style Drive-line Wheel-base (in) Notes
FIT 2009-13 2 Dr. FWD 99.0 Alternate wheel bases
94.0”
97.0”

2024-01-01 GTL Rotary Engine 12A Rotor Housings

#35131 from Tony Rivera · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In GT3 Engines - Mazda Spec Lines, add to Notes as follows:
12A Street Port: "Contact National Office for specific details of various allowable port configurations. May machine and use 13B
housing to O.E. 12A spec’s."
12A Bridge Port: "Optional choke size 42mm @2010lbs. May machine and use 13B housing to O.E. 12A spec’s."
12A Peripheral Port @ 2150lbs: "May machine and use 13B housing to O.E. 12A spec’s."
12A Peripheral Port @ 2300lbs: "Disenfranchised GT2* May machine and use 13B housing to O.E. 12A spec’s."

2024-01-01 GTL Request to Include Toyota GR86 in GTL

#35198 from Erik Madsen Madsen · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In GTL Cars - TOYOTA Spec Lines, classify DR86 as follows:
GTL Cars - TOYOTA
Model Years Body Style Drive-line Wheel-base (in) Notes
DR86 2021-2024 2 DR RWD 101.3

2024-01-01 GTL Errors and Omissions, GTL engines & Cars

#35226 from Peter Zekert · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

As printed in Fastrack

In GTL Cars - BMC thru Rover Group Spec Lines, BMW Mini, change Years as follows:
"2002-2013"

2024-02-01 GTL Rear Blade Spoiler Clarification

#35261 from Butch Kummer · Rule change · TB 24-02 (2024-01 Fastrack)

Summary

As printed in Fastrack

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.”

2024-02-01 GTL GT Direct Injection allowance and rules

#35437 from Grand Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)

Summary

As printed in Fastrack

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.”

2024-02-01 GTL GT2/3 remove Direction Injection not allowed in Spec line notes

#35439 from Grand Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

Summary

As printed in Fastrack

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.”