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

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.
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