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
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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,
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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. 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. Fuel Cell required mounting behind rear axle. Mounting to be with short axis of fuel cell can along length of car and long axis along height of car. 2. Battery relocation to right rear of trunk. Permitted replacement components 1. One piece drive shaft, part number M-4602-S, fordmotorsport.com 2. Multimatic Motorsports, Inc. mono-ball in front upper third link mount. 3. Front rotor 355 mm. 4. Front caliper upgrade per regulations. 5. Multimatic Motorsports, Inc. ABS part number 7FRT-2C353-AA 6. Multimatic Motorsports, Inc. Rear wing 605-SW100 with pedestal modification and mounting shims. (Mounting to be at same angle of attack as 2005 Mustang) Permitted Boss front grill as produced for road car. 7. Alternate connecting rod. (Manley Part # 14318) 8. 2013 Boss 302 front fascia part# DR33-16C928-AAW, hood part# DR3Z-16612-A. 9. Boss R front grill part number M-8200-MBRA and rear taillight panel part# DR33-13B504-AC, DR33-13B505-AC and associated components and hardware. 10. 2013 Boss 302 lower front “spoiler” or “splitter” DR3Z-17626-BA 11. 2013 GT500 brake package, (Front calipers P/N XB10511LH, P/N XB 10512RH; disc 09852874LH, 09852884RH; rear rotor DR3Z-2C026). Teams that opt to use this package are not permitted dimensional tolerances or front caliper upgrade. If used in combination with Bosch ABS controller, or Ford Racing ABS Module M-2353-CA or Module, Hydraulics and Bracket Assembly M- 2353-BA controller, Minimum weight shall be 3360.
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Ford Shelby GT350R-C Mustang GS As submitted by Ford and as approved by IMSA, according to the Homologation document Final Drive: 3.31:1 Fuel capacity: 21 gal Weight: 3400 lbs Tire size: 275/35/18 Maximum RPM: 8200 Engine Restrictor: 58.00 mm Car is approved with Conditional Homologation for 2015 Car is exempt from CTSC SR Attachment 2.1.1 and 2.1.2
Nissan 370Z (3.7) GS Final Drive: 4.08:1 Fuel capacity: 19.5 gal. Weight: 2850 Tire size: 275/35/18, front 275/35/18 rear Maximum RPM 8800 Approved Modifications 1. Caliper upgrade as per regulations. 2. May install fuel cell. 3. Exhaust cam timing lockout. Permitted replacement components 1. Nissan Motorsports Clutch/flywheel kit Part # 3201-SSAM1 2. Nissan Motorsports Header 14002-SSAM1 3. Nissan Motorsports Adjustable upper control arm 54524/ 54525-SSAM1 4. Nissan Motorsports Rear camber link 551A0-SSAM1 5. Nissan Motorsports Rear toe link 55110-SSAM1 6. Permitted VQ35HR Cylinder Head & Connecting Rod 7. Nissan Motorsports Piston Part # A2010-GA125. 8. Nissan Motorsports Crankshaft Part # 12200-VQ370 9. IMSA Approved aftermarket ABS Controller. 10. Nissan Motorsports Alternate Camshafts Part # 13020-GA370. 11. 3-Stage Dry Sump 12. Bosch ECU 13. Production 350Z rear brake caliper. 14. Bosch Alternator # F 01E B01 857-02
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Porsche 997 Carrera GTS (3.8L Direct Fuel Injection) GS Final Drive: 3.44:1 Fuel capacity: 20 gal. Tire size: 245/40/18 front, 275/35/18 rear. Maximum RPM 7850 Weight: 3025 lbs. with Stock ECU; 3075 lbs with Bosch ECU option Motor must be sealed by IMSA approved sealing source. Contact IMSA before purchasing a new Porsche 997 3.8L Direct Fuel Injection GTS Engine for required motor sealing procedure. Approved Modifications 1. Allowed 3” diameter Brake Duct opening in radiator inlets. 2. Aftermarket fuel cell in OEM location Permitted replacement components 1. Single lug Carrera GTS hubs not permitted; must convert to 5-lug spec. 2. Porsche supplied OEM rear aero kit wing for 997.1 and 997.2: PN: 997-044-802-00. Non-adjustable urethane or FRP replacement option permitted only as a 100% copy of the OEM design. Carbon material not permitted. 3. Replacement of OEM rubber bushings with spherical replacement bushing for 2-piece lower control arms and 2-piece rear toe links. 4. Alternate exhaust manifold for catalytic converter delete. 5. IMSA approved aftermarket ABS controller. 6. Aasco replacement motorsports clutch kit. Includes replacement steel flywheel and OEM style Sachs replacement clutch pressure plate and disc. 7. Brake disc increase to 350 mm front and rear. 8. Numeric Racing shifter 9. Bosch MS 4.3 ECU 10. Brake ducts 997.575.231.91, 997.575.232.91, 996.341.118.91, 996.341.117.91 11. Fender Liners 997.504.123.90, 997.504.124.90 12. Vacuum Booster 996.355.923.90 13. IMSA Required Motor Sealing Procedure: Teams are required to order / purchase and seal all engines from an IMSA Approved source. Existing 3.8L DFI GTS engines can be used only as cores. Additional core acceptability based on Porsche policies. At first IMSA race event with new engine, IMSA shall verify and record serial number and sealing application. In the event of required engine repair during an Event, an engine seal broken at the Event under the observance of an IMSA official may be resealed at the track by IMSA providing no alterations of any type were executed beyond the reason for repair. In the event that an engine’s seal is broken in any manner while not under observance of IMSA, the engine will be considered non-compliant and not eligible for competition. Engine sealing cost will be $500. Teams will make payment, sealing and shipping arrangements with Approved IMSA sources only contiguous with ordering of the replacement the engine. Following the completion of payment, the engine will be readied for shipping and team will be responsible for the shipping costs. Engine sealer can provide shipping options or services if desired. Approved Porsche Engine Purchase/ Sealing Source Suncoast Porsche, 5005 S. Tamiami Trail, Sarasota, Florida, 34231 (941)923-1700, [email protected] Hours: Monday-Friday 7:30-6:00, EST Saturday: 8:00-1:00, EST Sunday: Closed BGB Motorsports 6C West Tower Circle, #102, Ormond Beach, FL, 32174 Attn: John Tecce t: (386-672-3336) e:[email protected] Monday-Friday 8:00 - 5:00, EST Saturday: Appt. Only, Sunday: Closed
Contact IMSA for additional sealing information.
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Subaru WRX STi GS Final Drive: 3.9 Fuel capacity: 23 gal. Weight: 2975 lbs. Tire size 275/35/18. Maximum 7200 Maximum boost: 2537 mbar Absolute Approved Modifications 1. Front caliper upgrade as per rules. 2. Battery may be re-located to position over rear axle. 3. May install fuel cell 4. Permitted TGV delete. Permitted replacement components 1. Crawford Performance Piston, Part # S2 STI CP 2. Agency Power Air inlet box, part # AP-GH-111 3. Agency Power Rear control arm, part # # AP-GH-200 4. Subaru supplied lower chassis brace. Part # SOA8431120. 5. Phoenix Performance Rear toe adjuster, part # 09-STI-001 6. Phoenix Performance Exhaust, part # 09-STI-002. 7. May use Bosch MS 4.3 ECU 8. An aftermarket solenoid controlled valve may be installed in the pressure line to the actuator control for the wastegate. 9. Blouch 1.5 X-TR Turbo. 10. Aluminum Subaru Hood part number 57229FG0209P. 11. Siebon Carbon Hood, Decklid and Rear Spoiler.
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Audi S3 2015+ ST Final Drive: 4.769:1 / 3.444:1 Fuel capacity: 18.5 gal Weight: 2900 lbs. Tire size: 225/45/17 245/45/17 Maximum RPM 6600 Maximum Boost Pressure 1950 mbar Absolute Must use OEM ECU Must use OEM Audi S-Tronic Transmission Approved Modifications 1. May install fuel cell. 2. May relocate battery between rear strut towers
Permitted Replacement Components 1. Lightweight hood (Part # TBD)
BMW 128i ST Final Drive: 3.73:1 Fuel capacity: 18.5 gal Weight: Bosch ECU 2700 lbs. OEM ECU: 2660 lbs Tire size: 225/45/17 Maximum RPM 6950 Bosch ECU must use 61 mm flat plate throttle restrictor (team supplied) Contact IMSA for drawing and instructions. Approved Modifications 1. May install fuel cell. 2. Battery may be relocated to rear center between strut towers. Permitted replacement components 1. BMW 330i Brake rotor. 2. BMW supplied OEM 330i Brake caliper. 3. Bosch ECU. 4. BMW GS6-37BZ Transmission 5. BMW supplied front bumper part # 5111 044 2870 6. Oil pan/pick up assy.: PN- BW_E90_N54oilpan. 7. Electric water pump. 8. Dinan Rear Toe Link Kit PN- R280-0012 or BimmerWorld E8X/E9X . OEM eccentric adjustment must be replaced with concentric fasteners 9. Front Control Arm Bushing kit: Dinan Part #: D280-0008 or BimmerWorld Kit# BW.FLCAB.SEALED
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
BMW 328i (E90) sedan ST Final Drive: 3.73:1 Fuel capacity: 18.5 gal. Weight: 2800 lbs. Tire size 225/45/17 Maximum RPM 6950 Must use 61 mm flat plate throttle restrictor (team supplied) Contact IMSA for drawing and instructions. Approved Modifications 1. May install fuel cell. Permitted replacement components 1. BMW supplied OEM Front bumper part # 51118049252 and or # 51157140531. 2. Rear bumper, part # 51127906501 and or # 51127141053. 3. BMW supplied Rear spoiler, part # 51 71 0 411 575, 4. BMW supplied OEM 330i brake calipers. 5. BMW supplied light weight - Hood, part # HD0507BMWE904D-OE, deck lid, part # TL0507BMWW904D. 6. May use Bosch MS 4.3 ECU 7. Electric water pump. 8. Permitted BMW GS6-37BZ Transmission 9. Oil pan/pick up assy.: PN- BW_E90_N54oilpan. 10. Dinan Rear Toe Link Kit PN- R280-0012 or BimmerWorld E8X/E9X. If used, OEM eccentric adjustment must be replaced with concentric fasteners 11. Bimmerworld Short Shifter kit 12. Front Control Arm Bushing kit: Dinan Part #: D280-0008 or BimmerWorld Kit# BW.FLCAB.SEALED
BMW 328i (F30) sedan ST Final Drive: 3.91:1 Fuel capacity: 21 gal. Weight: 2850 lbs. Tire size 225/45/17 Maximum RPM 7000 Maximum boost 2300 mbar Absolute Approved Modifications 1. E90 hydraulic power steering with approved installation parts by BimmerWorld. Permitted replacement components 1. BMW supplied OEM 330i brake calipers. 2. 3rd party controller (Motec) for OEM boost control valve 3. May use Bosch MS 4.3 ECU. 4. May install fuel cell 5. Electric water pump. 6. F_30_F_Steer RIGHT and LEFT mounting brackets for steering rack. 7. Seibon Carbon Hood Part number HD1213BMWF30-OE or Bimmerworld part # 138.41.630.0001 8. Seibon Carbon Deck Lid Part number TL1213BMWF30 or Bimmerworld part # 138.41.630.0002 9. Bimmerworld Short Shifter kit 10. BMW Sport Bumpers and grilles. Front : 51-11-8-055-826 Rear : 51-12-8-056-497 11. Front Control Arm Bushing kit: Dinan Part #: D280-0008 or BimmerWorld Kit# BW.FLCAB 12. Bimmerworld Intercooler part # CR.CC.K1129
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Honda Civic SI (2.0) USDM 2011 ST Final Drive: 4:764:1 Fuel capacity: 17 gal. Weight: 2350 lbs. *Cars utilizing the #3 brake option 2400 lbs. Tire Size 225/45/17 Maximum RPM 9000 Must use OEM ECU Must use Honda Flashpro Approved Modifications 1. May install fuel cell. Permitted replacement components 1. Aftermarket exhaust header. 2. Skunk Rear camber arm, part# 516-05-0520, 3. Honda supplied TSX brake rotor 300x28mm, brake caliper part # 45018-SEA-J02 right, 45019-SEA-J02 left. (*Cars electing this option must increase weight by 50 lb.) 4. USDM engine may use JDM oil pump. 5. Honda Throttle body part # 16400-RRC-003 (JDM Throttle Body) 6. JDM Intake manifold Part # 17100-RRC-000
Honda Civic Si coupe and sedan JDM 2011 ST Final Drive: 5.0625 Fuel capacity: 16.0 gal. Weight: 2555 lbs. Tire size: 225/45/17. Maximum RPM 8500 Must use OEM ECU. Must use Honda Flashpro Approved Modifications 1. May install fuel cell. Permitted replacement components 1. Honda supplied K20A JDM engine. 2. Exhaust header. 3. Honda supplied TSX brake rotor 300x28 mm, brake caliper part # 45018-SEA-J02 right, 45019-SEA-J02 left. 4. Skunk Rear camber arm, part # 516-05-0520 5. Permitted HPD ABS brake controller Part # 57110F23S-A01 (effective June 1, 2011)
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Honda Civic Si 2012-2013 ST Final Drive: 4.76:1 Fuel capacity: 18.0 gal. Weight: 2570 lbs Tire size: 225/45/17 Maximum RPM 8050 Must use Honda Flashpro Must use unmodified Honda Sealed Engine P/N 1011A-RX0-R00 Approved Modifications 1. May install fuel cell. 2. May remove vertical strakes from underside of front fender liners. 3. Battery may be located in trunk centered between the rear damper towers. Permitted replacement components 4. Honda ABS controller # 57110-F235-A51 5. Honda Intake manifold Intake manifold 17100-RRC-000 6. Honda Exhaust header #18100-F23S-A10 7. Rear Camber Arm 8. Honda 2014 Bodywork/styling. 9. HPD Brake Kit p/ns Right: 45221-F23S-A00 Left: 45226-F23S-A00 10. HPD P/N 50830-F23S-A00 Motor Mount and required bracket 11. Seibon hood pat # HD1213HDCV2D-OE
Hyundai Genesis ST Final Drive: 3.72 Fuel capacity: 21 gal. Weight: 2975 lbs. Tire Size: 245/45 17 Maximum RPM 6900 Maximum Boost: 2250 mbar Absolute Must use “base” model brake caliper Approved Modifications 1. May install fuel cell. 2. May relocate rear sway bar outer pickup to lower control arm spring perch Permitted replacement components 1. IMSA approved aftermarket ABS controller.
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Mazda Speed 3 ST Final Drive: 4.187 3.526 Fuel capacity: 20 gal. Weight 2800 lbs. Tire size: 225/45/17. Maximum RPM 6500 Maximum boost 2044 mbar Absolute Must use 40 mm air inlet restrictor as supplied. Approved Modifications 1. May reinforce rear upper suspension pickup point. 2. May relocate outboard rear sway bar attachment to shock. Permitted replacement components 1. Mazda Speed Supplied Front Camber/Caster plates, Part # 0000-04-3401-IM 2. Mazda Speed Supplied Rear Camber Link, Part # 0000-04-3413-SP 3. Mazda Speed Supplied Exhaust downpipe, Part # 0000-06-3404-SP 4. Mazda Speed Supplied Alternate clutch and flywheel, Part # 0000-02-3306 5. Permitted Cobb Access Port (Part # AP-MAZ-002) 6. Mazda Speed Supplied Muffler and tail pipe 7. Cobb Tuning inlet hose Part# 77101DBK or Street Unit Part# SUMZRSRIT 8. Lightening of stock hood 9. Carbon Hood 10. Alternate (MX5) belt-driven power steering pump. 11. Fuel cell. Installation requirements available from IMSA.
Mazda MX 5 Miata ST Final Drive: 4.10:1 Fuel capacity: 17 gal. Weight: 2375 lbs. Tire size: 225/45/17 Maximum RPM 8100 Must use Mazda supplied hardtop, part # NFY2-R1-82XE-XX. Must use Mazda OEM 6 speed Approved Modifications 1. May install fuel cell. 2. May remove vertical strakes from front fender liners Permitted replacement components 1. Mazda Speed Header, part # 0000-06-5407 or 0000-06-5406 2. May use Bosch MS 4.3 ECU 3. Mazda Speed Piston kit, part # 0000-01-5207 4. BMW supplied, part # C19-09-07A, Throttle pedal. 5. Mazda connecting rod Part # 0000-01-3512 6. Mazda Flywheel Part # 0000-02-5309 7. Camshaft (specification on file) 8. OEM 2013 front fascia (PN NPY2-50-03XC-BB) grill, headlights, fog lights, and associated hardware. 9. Mazda offset camber bushing kit P/N 0000-04-5407
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
MINI Cooper JCW 2015- ST Final Drive: 3.59 Fuel capacity: 18 gal Weight: 2520 lbs Tire size: 225/45/17 Maximum Boost Pressure: 2070 mbar Absolute
Nissan Altima V6 ST Final Drive: 4.3 Fuel capacity: 20 gal. Weight: 2700 lbs. Tire size: 225/45/17 Maximum RPM: 7000 Standard variable intake manifold must be fixed in “high speed” position. Permitted replacement components 1 Nissan Motorsports Exhaust header #14002-GA33A Contact 2 Nissan Motorsports Rear Camber arms #43018-GA33A s 3 Nissan Motorsports Rear Toe arms #43019-GA33A 4 Nissan Motorsports Front Brake caliper LH #41001-EJ20A 5 Nissan Motorsports Front Brake caliper RH #41001-EJ20A 6 Front brake rotor 320 mm x 32 mm 7 May install approved fuel cell 8 Nissan Brake Caliper kit # CTSCC-FB01
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SPECIFIC CAR REGULATIONS of the 2015 CONTINENTAL TIRE SPORTSCAR CHALLENGE
Porsche Boxster 2.9L ST Final Drive: 3.88:1 Fuel capacity: 19.0 gal. Weight 2870 lbs. Tire size: front 225/45/17 rear 245/45/17 Maximum RPM 7250 Engine Restrictor: 50mm flat plate Must use production hard top with production glass window. Rear wing must be fixed in the up position Approved Modifications 1 Allowed 3” diameter Brake Duct opening in radiator inlets. 2 May remove vertical strakes from front fender liners 3 May modify rear caliper pins for rotor clearance Permitted replacement components 1. OEM six speed transmission 2. 996 front calipers and rotors 3. Aftermarket exhaust manifold 4. Must use stock ECU from Porsche. 5. Two Piece lower control arm with inner mono-ball bushing. 6. GT3 style adjustable inside rear toe link. 7. IMSA approved aftermarket ABS controller. 8. Brake ducts 997.575.231.91, 997.575.232.91, 996.341.118.91, 996.341.117.91 9. Fender Liners 997.504.123.90, 997.504.124.90 10. Short shifter as approved by IMSA
Porsche Cayman 2.9L ST Final Drive: 3.88:1 Fuel capacity: 19.0 gal. Weight: 2870 lbs Tire size: front 225/45/17 rear 245/45/17 Maximum RPM 7250 Engine Restrictor: 50mm flat plate Approved Modifications 1 3” diameter Brake Duct opening in radiator inlets. 2 Rear wing must be fixed in the up position 3 May remove vertical strakes from front fender liners 4 May modify rear caliper pins for rotor clearance
Permitted replacement components 1. OEM six speed transmission 2. 996 front calipers and rotors. 3. Aftermarket exhaust manifold 4. Must use stock ECU from Porsche. 5. Two Piece lower control arm with inner mono-ball bushing. 6. GT3 style adjustable inside rear toe link. 7. IMSA approved aftermarket ABS controller. 8. Brake ducts 997.575.231.91, 997.575.232.91, 996.341.118.91, 996.341.117.91 9. Fender Liners 997.504.123.90, 997.504.124.90 10. Short shifter as approved by IMSA
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