Grand Touring (GT) Specific Car Regulations 2013 ... - Grand Am

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Aston Martin Vantage Specifications TBD Weight: Tire size: Approved Modifications: Grand Touring (GT) Specific Car Regulations 2013 Audi R8 GRAND-AM (Prep 1) Weight: 2775lb Tire size: 305/650R18 front 325/710R18 rear. Maximum RPM 8600 Maximum fuel capacity 19.5 gal. All cars must be unmodified from FIA GT3 homologation as approved GRAND-AM modifications and built by Audi Sport, including engine ECUs and restrictors. Restrictor size – 42.0mm (x2) Maximum front splitter dimension 1.5 inches from vertical projection outline. Flat under tray in front of front wheels. Complete rear wing height w/ end plates cannot exceed roof height. Complete rear wing may exceed the rear-most perimeter of the bodywork 4” when viewed from above. ABS controller may be retained for ECU communication. ABS Brakes not permitted. Traction control not permitted. Maximum front brake rotor dia. 370mm, maximum rear brake rotor dia. 355mm. Fuel rig may be fitted with a black 1.1” inch restrictor used to connect the clear 1.5-inch ID fuel hose to the clear 2 ¼ inch ID hose on the dry break fueling probe. Approved Modifications: 1. Permitted Catalyst Exhaust system. 2. May eliminate and replace electronic engine mounts. 3. Single differential ramp set of 30/45 4. Vented rear window permitted. 5. Single lug hubs are approved. 6. Rear GT3 diffuser with blocker panels on outer tunnels 7. -A- Pillar wicker 8. Permitted Clutch p/n 42A 141 011 A, flywheel p/n 42A 105 270 with ring gear adapter 42A 105 221 and clutch release bearing 42A 141 671 A. 9. “Straight-through” exhaust may be used. (Sound regulations must still be met) 10. Permitted front fender louver Part# 42A 821 275 (L), 42A 821 276 (R) 11. Permitted front dive planes Part# 42A 807 945 12. Permitted radiator exit wicker Part# 42A 823 319 C (Must be trimmed to ½” above standard hood opening.) 13. Permitted wing mount Part# 42A 827 723 K (L), 42A 827 724 K (R) 14. Permitted composite doors. 15. Permitted Staubli fuel delivery dry break. Must use black 1.1” restrictor machined to insert into the fuel supply hose immediately preceding the filler. 2
Grand Touring (GT) Specific Car Regulations 2013 BMW M3 E92 (Prep 2) Weight: 2615 lb. or 2720 w/ DP transaxle Tire size: 305/650R18 front 325/680R18 rear Maximum fuel capacity 18.5 gal. Maximum front splitter dimension 3 inches. Maximum RPM 7300. Fuel rig must be fitted with a purple .947 inch restrictor used to connect the clear 1.5-inch ID fuel hose to the clear 2 ¼ inch ID hose on the dry break fueling probe. Approved Modifications: Stock M5 5.0 L V8 engine with the following Dinan camshafts Int: DC526-0005 + 0007 Ex: DC526-0006 + 0008. Piston rod and pin 936 gms. Allowed maximum engine set-back of 3 inches. 5-speed transmission. Maximum front Brake rotor Diameter 355mm Brake pad & caliper as with 330mm Rotor BMW Z4 (Prep 1) Specifications TBD 3
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Grand Touring (GT) Specific Car Regulations 2013 ... - Grand Am

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