IMSA RULES 2015 Revision Date: August 12, 2015 SPECIFIC CAR REGULATIONS of the CONTINENTAL TIRE SPORTSCAR CHALLENGE Sanctioned by INTERNATIONAL MOTOR SPORTS ASSOCIATION One Daytona Blvd. Daytona Beach, FL 32114 (O) +1 (386) 310-6500 (F) +1 (386) 310-6695 www.imsa.com SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE Table of Contents Models listed with year indicate the final year of production for the specific model. GS ST Aston Martin Vantage Audi S3 2015 BMW M3 E92 coupe BMW 128i (3.0) BMW 328i (E90) sedan Chevrolet Camaro BMW 328i (F30) sedan Chevrolet Camaro Z/28.R Honda Civic Si coupe and sedan JDM 2011 Ford Mustang FR500C (5.0) 2009 Honda Civic SI (2.0) USDM 2011 Ford Mustang Boss 302R GT Honda Civic Si 2.4L Ford Shelby GT350R-C Mustang Hyundai Genesis Nissan 370Z (3.7) Mazda Speed 3 Porsche 997 Carrera S (3.8) Direct Injection Mazda MX 5 Miata Subaru WRX STi MINI Cooper JCW 2015- Nissan Altima V6 Porsche Boxster 2.9L 987 Porsche Cayman 2.9L 987 Please note that only 2015 registered cars appear in this document. For information about additional applications please contact IMSA All changes from previous version in RED TEXT SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE Aston Martin GS Final Drive: 3.909:1 Fuel capacity: 18.5 gal. Weight: 3040 lbs. Tire size: 275/35/18 Maximum RPM Gears 1-4, 6:7300 5th Gear: 7500 May use OEM “SportShift” system Approved Modifications: 1. Dry Sump System (3 Stage) Permitted replacement components 2. GT4 Spec Flywheel 3. Production Exhaust Header – Catalyst Delete 4. Factory rear spoiler 5. Adjustable rear toe link BMW M3 E92 2 door GS Final Drive: 3.85:1 Fuel capacity: 18.5 gal. Weight: 3300 lbs. Tire size: 275/35/18 Maximum RPM 8250 Must use Bosch MS 4.3 ECU Must use complete and unmodified OEM air intake system. Dry Sump Tank must be located in rear seat area on right side. Must use 38mm x 2 air inlet restrictors as supplied. Stock air box must have all openings blocked to seal air box. Engine must be sealed as provided by KSS Motorsports / Sunbelt Engines Engines may be built by any engine builder. Engine must be submitted to Sunbelt for inspection & power audit. Engine physical inspection will include a visual inspection of the crank, rods and pistons. Physical inspection will include an evaluation of cylinder head ports (intake and exhaust.) Physical inspection will include an evaluation of camshaft events and evaluation of intake manifold and throttle bodies. Power audit will include running engine on dynamometer to establish compliance to IMSA accepted power levels. Audit will include spark and fuel slew to confirm max power level. If engine is found compliant in both physical inspection and power audit documentation of engine number and seal number will be recorded on-site, provided to IMSA, and engine will be sealed and returned to customer. Approved Modifications 1. Battery to be relocated to a position over rear axle. 2. Fuel Cell mounted behind rear axle. 3. Dry Sump (3 stage) 4. May redirect airbox pickup to upper radiator area (Ram Air is probibited) Permitted replacement components 1. Clutch Kit part # TR2CD, OS Giken, 2. Rear toe link, Kinetic part # 408-2001 3. Rear wing, UUC part #UUCE90M3CFW 4. Caliper upgrade as per rules. 5. IMSA approved ABS controller 3 SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE Chevrolet Camaro GS As provided by Chevrolet, built by Riley Technologies & approved by IMSA. Final Drive: 3.45 Fuel capacity: 20 gal. Weight: 3300 lbs. Tire size 275/35/18. Maximum RPM 6600 Must use Bosch MS 4.3 ECU Stock, unmodified, LS-3 engine. No internal engine modifications are permitted unless listed. Must use complete unmodified OEM air intake system. Engine must be sealed as provided by CRD Motorsports Engines may be built by any engine builder. Engine must be submitted to CRD for physical inspection and power audit. Engine physical inspection will include a visual inspection of the crank, rods and pistons. Physical inspection will include an evaluation of cylinder head ports (intake and exhaust.) Physical inspection will include an evaluation of camshaft events. Physical inspection will include an evaluation of intake manifold and throttle bodies. Power audit includes running engine on dynamometer to establish compliance to IMSA accepted power levels. Audit will include spark and fuel slew to confirm max power level. If engine is found compliant in both physical inspection and power audit documentation of engine number and seal number will be recorded on-site and provided to IMSA. Engine will be sealed and returned to customer. Approved Modifications 1. Caliper upgrade as per rules. 2. Battery relocation to right rear of trunk. 3. Fuel Cell required mounting behind rear axle. Mounting to be with short axis of fuel cell can along length of car & long axis along height of car. 4. Dry Sump (3 stage scavenge) Permitted replacement components 1. Riley Technologies Rear toe link offset bushing, part # Y27-016 2. Riley Technologies Single piece drive shaft, part # Y24-001 3. Replace rod bolts. 4. Riley Technologies Dry sump pan, part # Y21-1005M 5. Riley Technologies Light weight doors, part # Y01LH / Y01RH 6. Riley Technologies Light weight hood, part # Y01- HOOD 7. Riley Technologies Light weight deck lid, part # Y01- DECKLID 8. IMSA approved ABS controller. 9. Riley Technologies Offset ½ inch differential mount bushing 10. Rear brake caliper from V-6 model 11. Riley Technologies front trailing arm bushing. (P/N Y12-015, 016, COM 14-T70) 12. Riley Technologies Throw out slave cylinder. (P/N TBD) 13. Aftermarket RAM single-disc Clutch/Flywheel. (P/N TBD) 14. Inner Lower Control arm spherical bearings part # Y12-100F & Y27-1001R 15. GM Rear Spoiler Kit Part # 92234283 16. Quartermaster Part# Y24-2000 replacement Clutch/flywheel. 17. chin spoiler GM P/N 22745060 18. Pfadt spherical bearing PN A-1208 Rear upright upper arm bearing 4 SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE Chevrolet Camaro Z/28.R GS Provided by Chevrolet, built by Pratt Miller and as approved by IMSA. Final Drive: 3.73:1 Fuel capacity: 20.5 gal. Weight: 3575 lbs Minimum Ride Height: 4.0” Engine Restrictor: 60.00 mm Maximum RPM: 6100 Gears 1-3, 6 6400 Gears 4,5 Maximum wicker height: 13mm Engine shall be sealed by GM Powertrain. Ford Mustang FR500C (5.0) 2009 GS Final Drive: 3.73:1 Fuel capacity: 18 gal. Weight: 3275 Tire size: 275/35/18. Must use OEM unmodified ECU Must use unmodified exhaust manifold as supplied with engine. Must use IMSA air restrictor as supplied. Maximum rear camber allowance is a total of .3 degrees (Left and right combined). Engine must be sealed as provided by Roush Yates Racing Engines Engines may be built by any engine builder. Engine must be submitted to Roush Yates for physical inspection and power audit. Engine physical inspection will include a visual inspection of the crank, rods and pistons. Physical inspection will include an evaluation of cylinder head ports (intake and exhaust.) Physical inspection will include an evaluation of camshaft events. Physical inspection will include an evaluation of intake manifold and throttle bodies. Power audit includes running engine on dynamometer to establish compliance to IMSA accepted power levels. Audit will include spark and fuel slew to confirm max power level. If engine is found compliant in both physical inspection and power audit documentation of engine number and seal number will be recorded on-site and provided to IMSA. Engine will be sealed and returned to customer. Approved Modifications 1. Fuel cell mounted behind rear axle. Permitted replacement components 1. 5.0 liter engine # M6007-R50P with fixed runner length at 3 and 4 inches. 2. Transmission package, part number M-7003 T56-RP, fordmotorsport.com 3. One pc. Driveshaft, part number M-4602-J, fordmotorsport.com 4. Front control arm, part number M-3075-R. fordmotorsport.com 5. Front outer tie rod, part number M-3130R, fordmotorsport.com 6. Rear control arm, part number M-5649-R. fordmotorsport.com 7. Front rotor 355 mm. 8. Caliper upgrade as per rules. 9. Steeda Autosports Hood, part number 307-0011 10. Steeda Autosports Rear wing, part number 605-SW100 11. Steeda Autosports Rear Panhard bar, part number 555-2551 12. Multimatic Motorsports Inc ABS part number 7R33-2C353-AB, 5 SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE Ford Mustang Boss 302R GT GS As submitted by Ford and as approved by IMSA, according to the Homologation document. Final Drive: 3:73:1 Fuel capacity: 18.5 gal. Weight: 3290 lbs OR 3335 lbs as per Permitted replacement components #11 Tire size: 275/35/18 Maximum RPM 8000 Must use OEM ECU as supplied by Ford Racing. Must use unmodified exhaust manifold as supplied with engine. Permitted band clamp attachment. Maximum rear camber allowance is a total of .3 degrees (Left and right combined). Engine must be sealed as provided by Roush Yates Racing Engines Engines may be built by any engine builder. Engine must be submitted to Roush Yates for physical inspection and power audit. Engine physical inspection will include a visual inspection of the crank, rods and pistons. Physical inspection will include an evaluation of cylinder head ports (intake and exhaust.) Physical inspection will include an evaluation of camshaft events. Physical inspection will include an evaluation of intake manifold and throttle bodies. Power audit includes running engine on dynamometer to establish compliance to IMSA accepted power levels. Audit will include spark and fuel slew to confirm max power level.