CACC Rule Change Proposals Summary – The Confederation of Autosport Car Clubs

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Date Created	September 30, 2023
Name of Proponent	Ryan O’Connor
Short Description	IPE car modifications
Applicable Regulatory Document	Race
Type of Rule Change	Modification
Section to be Added or Changed	Section 18 transmission eligibility, braking and bodywork modifications
Current Regulation	18.8.3 Transmission / Final Drive Transmission / Final Drive modifications are limited to the IP except for the following: 18.8.3.1 Any differential/transmission/transaxle housing and/or final drive or gear ratios may be used so long as the replacement unit does not alter the wheel base, axle width, spring and/or shock attachment points of the race car and the gear ratio remains the same as any gear ratio that can be achieved when utilizing a stock differential/transmission/transaxle is permitted. 18.8.3.2 Any limited-slip or locked differential is permitted.
Proposed Regulation	18.8.3 Transmission / Final Drive Transmission / Final Drive modifications are limited to the IP except for the following: 18.8.3.1 Any differential/transmission/transaxle housing and/or final drive or gear ratios may be used so long as the replacement unit does not alter the wheel base, axle width, spring and/or shock attachment points of the race car and the gear ratio remains the same as any gear ratio that can be achieved when utilizing a stock differential/transmission/transaxle housing. Competition transmissions that are sequential, straight cut or “dog boxes” are not allowed unless they are OEM. 18.8.3.2 Any limited-slip or locked differential is permitted. 18.8.3.3 ABS braking systems may be deleted. ABS systems that remain on the car must be OEM. 18.8.5 Bodywork 18.8.5.1 Rear wings, side skirts, and other body modifications are allowed as long as they do not extend beyond the stock dimensions of the car. Lip spoilers are allowed per for Improved Touring IT category in the SCCA GCRs for the current year. 18.8.5.2 Non OEM hoods of any material are permitted. Additional cooling vents may be added to the hood. 18.8.5.1 Fenders must be stock but cooling vents for braking or other purposes is permitted. Fender flares are not permitted.
Reason for Rule Change	To clarify allowable changes to cars. Clarifying ambiguity in current regulations encountered in protests this year.
Regulation as Amended and Published	18.8.3 Transmission / Final Drive Transmission / Final Drive modifications are limited to the IP except for the following: 18.8.3.1 Any differential/transmission/transaxle housing and/or final drive or gear ratios may be used so long as the replacement unit does not alter the wheel base, axle width, spring and/or shock attachment points of the race car and the gear ratio remains the same as any gear ratio that can be achieved when utilizing a stock differential/transmission/transaxle housing. Competition transmissions that are sequential, straight cut or “dog boxes” are not allowed unless they are OEM. 18.8.3.2 Any limited-slip or locked differential is permitted. 18.8.3.3 ABS braking systems may be deleted. ABS systems that remain on the car must be OEM. 18.8.5 Bodywork 18.8.5.1 Rear wings, side skirts, and other body modifications are limited to stock dimensions of the car as defined by the height of the roof and width of the fenders. Lip spoilers are allowed per for Improved Touring IT category in the SCCA GCRs for the current year. 18.8.5.2 Non OEM hoods of any material are permitted. Additional cooling vents may be added to the hood. 18.8.5.1 Fenders must be stock but cooling vents for braking or other purposes is permitted. Fender flares are not permitted.
Status/Disposition	Approved