Recommended Rules Changes - Sports Car Club of America
Contents
1. SPORTS CAR CLUB OF AMERICA INC PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com engine weight requirements 6 of 13 A TE Sports Car Club of America per the latest 2 stroke engine table Must meet all P2 requirements except the following Wings up to 16 5in cord single element only unrestricted end plate on end mounted wings 2 16 In sect 270 March Fastrack Club Racing Board P2 Engine Rule Update ion 9 1 8 D L change the language as follows L ENGINE All engines will be fitted with a specified type of inlet restrictor as determined by the SCCA For engines not listed in the P2 Engine Table competitors seeking approval shall be responsible for submitting engine dyno and performance data to the SC a Stock Engine Preparation allowances CA The SCCA may at its option gather request additional data Any modifications or adjustments not specifically listed are not allowed on stock engines 1 ON Oa FF Internal dimensions and materials of the engine shall be stock Fasteners such as rod bolts are free Bolt on covers and ports external to the engine may be modified or replaced Camshaft timing may be adjusted but the camshafts must remain stock Timing gears and cam drive tensioning mechanisms may be modified or substituted as long as they serve no other purpose Oil systems are free2. 2 Preparation limited to changes listed in the section above Stock Engine Preparation allowances 2 ldi cele gc hal kt such asrod bolts are free timing_may _beadiusted but the camshafts must remain stock4 Oi systerss are free for_fuel_injected_engines Any 9_Internal_engine_machining _of any _kindis net alowed e_machining_of the allowed 490 3 Any one piece flywheel with a minimum weight of 5lbs is permitted va sisson ta b c Motorcycle four stroke based Any medificatiens or adiustments net ically 4i f ma 1 SCCA approved production based motorcycle engines with a maximum of 4 cylinders and with a maximum displacement of 1500cc 2 Preparation limited to changes listed in the section above Stock Engine Preparation allowances 2 Camshafttiming may be 3_Oi systems_are free SPORTS CAR CLUB OF AMERICA INC 8 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes wune 2015 gt Sports Car Club of America HEY 8 3 Titanium valves may be substituted with stainless steel of the same diameter e d Two Stroke Engine 2 stroke engines with a maximum displacement of 1200cc and a maximum of 4 cylinders Each intake port for each cylinder must have a venturi type inlet restrictor that is placed such that all air inducted into each cylinder must pass through the defined restrictor There
3. A Recommended Rules Changes wune 2015 h Sports Car Club of America Recommended Items for 2016 The following is a summary of proposed rule changes made by the Club Racing Board These items will be presented to the Board of Directors for approval Comments both for and against should be sent to the Club Racing Board via http www crbscca com or www clubracingboard com If approved these rule changes will become effective 1 1 2016 unless indicated otherwise The letter number Fastrack month author and title precedes each proposed rule American Sedan None B Spec None Formula Sports Racer None GCR 1 16946 June Fastrack Club Racing Board Transmission Short Shift Kit Change 9 3 49 and re number 9 3 49 through 9 3 55 to 9 3 50 to 9 3 56 9 3 49 TRANSMISSION SHORT SHIFT KITS Transmission short shift kits are allowed on all cars Add to Appendix F Technical Glossary Transmission Short Shift Kit A mechanical modification or replacement of a part or parts to modify the throw of the shifter It must not change the pattern from its original Grand Touring None Improved Touring None Production None Spec Miata None Super Touring ST SPORTS CAR CLUB OF AMERICA INC 1 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes wune 2015 h Sports Car Club of America 1 16858 June Fastrack Christopher Jurk
4. Cooling systems are free Turbo charging and supercharging are prohibited Exhaust system is free EGR and or air pumps may be removed or disabled Inlet System Any manifold s and single or individual throttle body s incorporating a butterfly throttle actuation may be used for fuel injected engines Any manifold may be used with carburetors which may incorporate any method of throttle actuation Internal engine machining of any kind is not allowed i e machining of the cylinder heads pistons rods and other internal components is not allowed SPORTS CAR CLUB OF AMERICA INC PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes une 2015 7 of 13 A A Recommended Rules Changes wune 2015 mer 4 Sports Car Club of America 10 Exterior machining for mounting of the engine or accessories is permitted however the intake or exhaust port faces shall not be modified 11 Spark plugs engine sensors and any associated brackets or covers are free 12 Crankcase ventilation is free as long as it serves no other purpose 73 Engine rebuilds such as regrinding the crankshaft and sleeving the block must meet specifications in the factory service manual no overbore is permitted a b Automotive based 1 SCCA approved production based 4 cylinder automotive engines of a maximum displacement of 2000cc are allowed The approved engines are listed in the engine tables
5. Car Club of America SPORTS CAR CLUB OF AMERICA INC PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com 5 of 13 A Recommended Rules Changes une 2015 gt Sports Car Club of America cc max permitted Radical 1500Ib Sealed 42 5mm Radical wing or SR 3 Radical Radical Cup P2 class Cup engine compliant wing and and end plate transmission Radical rear diffuser permitted Radical Stock Engine Motorcycle 37 5mm Radical wing or Club Sport 1000lb only P2 Engine P2 class Pro Sport PR 1005cc Table compliant wing 6 Stock Engine Motorcycle 40 5mm and end plate 1300lb only P2 Engine 61 in width 1370 cc max Table min Radical rear diffuser permitted Bobsy TBD Stock Engine P2 Engine 37mm Minimum width 950 b Table B 1 55 inches 1005cc max P2 Engine Not required Must meet Table B 2 under body P2 Engine 39mm aeredynamic Table B 3 requirements tA Modified P2 Engine 38mm sectione Engine Table B 1 Must meet all 1025lb P2 Engine Not required P2 1005cc max Table B 2 requirements P2 Engine 40mm except the Table B 3 following Wings up to 16 5in cord single element only unrestricted end plate on end mounted wings Diaso D962 1005cc max Motorcycle Body front only P2 Engine splitter and Table wing either original OEM or P2 compliant Jondal 94 54 Stock Engine 2 cycle P2 Minimum width 950lb Engine Table 55 inches Mustmeet 1025lb requirements Must meet
6. are NO exceptions The required inlet restrictor may be placed anywhere in the inlet tract as long as it meets the requirement that all air inducted into each cylinder must pass through the required restrictor balance tubes are not allowed GCR 1 15828 March Fastrack Matt Miskoe Minimum Driver Age Thank you for your request In the interest of opening competition as broadly as possible the CRB recommends lowering the minimum age for a competition license to 14 2 16110 March Fastrack Christopher Childs Blueprint Definition Thank you for your request Add a new section e to Appendix F under Blueprinting e Any edges resulting from authorized machining processes may be deburred up to 040 Recommended Items for 2016 The following subjects were approved by the Board of Directors in their February 2015 meeting These items will be effective 1 1 2016 GCR 1 15576 March Fastrack Terry Ozment Drones at Track The CRB endorses the recommendation and suggests the following language be appended to the GCR as new Section 1 5 7 5 Commercial and private unmanned aircraft systems aka drones are prohibited unless authorized in the Supplemental Regulations Touring T4 1 16287 March Fastrack Anthony Cuthbert Rear Sway Bar Upgrade for 500 Abarth SPORTS CAR CLUB OF AMERICA INC 9 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommend
7. inches max Displacement Track Max inches AMAC 94 54 Stock Engine P2 Engine 37mm Minimum width Asteck 950lb Table B 1 55 inches Cheetah 1005cc max P2 Engine Not required Mustmeet Decker Fox Table B 2 under bedy LeGrand P2 Engine 39mm aerodynamic Table B 3 requirements iA Modified P2 Engine 38mm sectione Engine Table B 1 Must meet all 1025lb P2 Engine Not required P2 1005cc max Table B 2 requirements P2 Engine 40mm except the Table B 3 following Wings up to 16 5in cord single element only unrestricted end plate on end mounted wings AMAC AM5 94 54 Stock Engine P2 Engine 36 5mm Minimum width Fox 2 Seater 900Ib Table B 1 55 inches Zephyrus 1005cc max P2 Engine Not required Mustmeet Decker 1 2 Table B 2 under bedy P2 Engine 38 5mm aerodynamic Table B 3 requirements tA Modified P2 Engine 37mm sectione Engine Table B 1 Must meet all 950lb P2 Engine Not required P2 1005cc max Table B 2 requirements P2 Engine 39mm except the Table B 3 following Wings up to 16 5in cord single element only unrestricted end plate on end mounted wings Enterprise See GCR Sports Racer section 9 1 8 F for complete specifications Radical Stock Engine Motorcycle 37 5mm Radical wing or SR 3 1000Ib only P2 Engine P2 class SR 4 1005cc max Table compliant wing Stock Engine Motorcycle 40 5mm and end plate 1300Ib only P2 Engine Radical rear 1005 lt 1370 Table diffuser A Recommended Rules Changes wune 2015 gt Sports
8. 7 C 1 a 1 f 5 Replace the entirety of 9 1 7 C 1 a f 5 Current 5 Unshrouding of valvesisexplcitly imited as follows there must bea sharp edge where the valve relief cut meets the chamber_that edge must be acan la amog ad a Q aYa o ha blandad bh han hunar O g y chemically processed to create a smooth transition The maximum dimensions are l pei id i lde UPDATE 5 20 2015 Due to member input the Club Racing Board recommends changes to this letter 040 changed to 010 on the bottom of the relief cut Drawing published on scca com 4 24 15 has been removed New drawing is attached New 5 Unshrouding of valves is explicitly limited as follows The wall of allowed relief cut must be a single cut parallel and concentric with the valve guide for the full depth of the cut The cut must be cylindrical with no taper The bottom of the cut must form a 90 degree angle with an allowance for a bevel or curve whose radius is not to exceed 010 There must be a sharp non modified and non de burred edge where the valve relief cut first meets the chamber No part of this SPORTS CAR CLUB OF AMERICA INC 12 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes wune 2015 mer 4 Sports Car Club of America cut except where it intersects the head gasket surface which may be de burred up to 040 is to be blended by hand machined or chemically
9. C 1 M change the language as follows M SPEC LINE CARS The intent of Table 1 Spec Line Cars is to accommodate existing cars previously homologated as DSR or CSR Radicals and similar series cars and not requiring require expensive changes to make them compliant with the P2 rules A car prepared in excess of the P2 allowances but raced prior to 2014 may continue to use non P2 compliant components net listed in the spec lines e g wings ret listed in the spec line but further development te spectine columnste g For individual cars included in any of the spec lines in Table 1 any deviation from spec line and column requirements further development e g Wheelbase Track requires the car to be made compliant to all current P2 requirements with a notation in the front of the logbook noting the requirement for the car to be compliant with all P2 rules For example should the spec line allow a different minimum width and the car were to be changed to meet the P2 minimum width then the minimum weight would also have to be increased along with any other non compliant components to make the car fully P2 compliant In P2 Table 1 spec line cars change the spec lines as follows Table 1 Spec Line Cars SPORTS CAR CLUB OF AMERICA INC 4 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com Marque Wheelbase Weight Engine Restrictor Notes
10. alized for a false start If a false start has occurred and the race has been started the driver s may be black flagged and held in the pits or at the start line for up to 1 minute and other penalties may also be imposed as specified in SPORTS CAR CLUB OF AMERICA INC 3 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes wune 2015 h Sports Car Club of America Section 7 The CRB recommends the Board of Directors approve this rule change to be effective 5 1 12015 2 16402 March Fastrack Club Racing Board Additional GCR changes Required By Letter 16221 Change 6 5 3 C 2 2 Well bunched andinine and Change 6 5 4 A A The Starter will abort the start by displaying no flag and shaking his head in the negative if the field is not in good order or if some drivers have improved their positions by moving out of line more than half a car width or by passing prior to the waving of the green flag This advises the drivers to proceed on another pace lap Drivers raise one hand to confirm that the start is aborted The CRB recommends the Board of Directors approve this rule change to be effective 5 1 2015 Recommended Items for 2015 The following subjects were approved by the Board of Directors in their February 2015 meeting These items will be effective 6 1 2015 P2 1 16220 March Fastrack David Arken P2 Spec Line Cars In section 9 1 8 A
11. ed Rules Changes wune 2015 TE Sports Car Club of America Thank you for your request For the Fiat Abarth 500 add to the Notes in the specification line Front strut tower brace allowed Rear swaybar up to 25 mm allowed TABLED Item for 2016 The following subject was TABLED by the Board of Directors in their February 2015 meeting for review at SCCA GCR 1 14612 February Fastrack Steve Harris Replacement for GCR 8 1 4 Compliance Review Thank you for your request The CRB recommends that the Board of Directors approve these changes to be effective 5 1 2015 Change 8 1 4 8 1 45 Protests Any entrant driver crew organizer or official participating in an event may protest any decision act or omission of another entrant driver crew organizer official or any other person connected with that event whose actions the protestor believes to be in error or which violate the GCR the Supplemental Regulations or any condition involving SCCA s sanction of the event except where exemption from protest is specified elsewhere in the GCR or the event Supplementary Regulations Add new section 8 1 4 8 7 4 Compliance Review A member may request a determination on the compliance of their vehicle or its components to the current GCR through the Club Racing Department A Upon receiving a request the staff will review the request and will consult with the CRB and other appropriate resources to provide a response to the
12. ew organizer official or any other person connected with that event whose actions the protestor believes to be in error or which violate the GCR the Supplemental Regulations or any condition involving SCCA s sanction of the event except where exemption from protest is specified elsewhere in the GCR or the event Supplementary Regulations Add new section 8 1 4 8 1 4 Compliance Review A member may request a determination on the compliance of their vehicle or its components by submitting a Compliance Request Form to the Club Racing Department at which time a letter will be entered into the CRB letter system The Compliance Request Form is available through the Club Racing Department A The staff will review the request and must consult with the CRB and other appropriate experts B Club Racing will schedule in person inspection of the vehicle or components by a class expert The expert will submit a written opinion back to Club Racing and the CRB C Club Racing and the CRB will review the expert s opinion If required the CRB may initiate a clarification of the applicable rule s Club Racing will then submit a written ruling to the applicant D A fee will be determined and paid in advance of the inspection A portion of the fee may be refunded at the discretion of SCCA E Verification of compliance is based on the GCR as of the date of the written response to the member The GCR changes annually and there is no guarantee of co
13. hese items will be effective 5 1 2015 FC 1 15933 February Fastrack Formula Sports Racing Committee Zetec engine Thank you for your letter The CRB recommends specification updates and allowances for rebuilds for the Zetec engine in FC These changes are available at http scca cdn racersites com prod assets gcr 209 201 201 20B 2016 20 amended 20v14 12 17d1 pdf The CRB recommends that the Board of Directors approve this change effective 5 1 2015 ASR P1 and P2 1 15693 February Fastrack David Ferguson Opposed to Shock Rule Thank you for your letter Add 9 7 8 A 2 In an effort to control shock damper technology and cost to a level reasonable for Club Racing in ASR P1 P2 any fluid dampers are allowed with the following restrictions SPORTS CAR CLUB OF AMERICA INC 2 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes wune 2015 gt Sports Car Club of America 7 Dampers must be manually adjustable only 2 Mechatronic valves G valves hybrid inerters inerters and mass dampers are prohibited 3 Electro Magnetic shock fluid is prohibited 4 Shocks may not be electronically interconnected however data acquisition is permissible as long as it serves no other purpose The CRB recommends that the Board of Directors approve this change effective 5 1 2015 P2 1 13718 February Fastrack Jay Ivey Camshaft for YAC Thank
14. iewicz Driver Cooling NACA Duct Location Thank you for your letter The removal of NACA from 9 1 4 F 7 and 9 1 4 F 10 can be found in letter 16938 Technical Bulletin Change 9 1 4 F 7 7 Both front windows driver and passenger shall be down preferably removed whenever the vehicle is on track The OEM window opening on the front doors shall not be filled in with any material other than the material required to mount a NACA duct for driver cooling If used the NACA duct shall be mounted in the frent tewer cernerof the window opening The area closed off to mount the NACA duct shall not exceed 50 square inches In rain conditions a quarter window larger than 50 square inches may be used in the area normally used to mount the permitted NACA duct in an attempt to minimize the amount of water entering the cockpit Enough open area for the driver to exit in an emergency shall remain open at all times Touring T2 1 16389 June Fastrack Kurt Rezzetano Spring Rate Change for Mustang GT and Boss Thank you for your request In Touring 2 please change the notes for the 2012 Boss 302 Mustang the 11 14 Mustang GT and the 05 10 Mustang Coupe GT and Shelby GT 5 0 Maximum spring rate 500 Ibs front 300 Ibs rear KEKE HEKKEKKHKR KEKE KKEK KKK HK KEK KEKE HKKE KEK KEKE HRKR KEK KKEKEKRHKKEKKKEK KEK KKK KKKHKHE Recommended Items for 2015 The following subjects were approved by the Board of Directors in their February 2015 meeting T
15. member B If Club Racing cannot make a determination the member will be directed to submit a letter through the crbscca com system C Club Racing will notify the CRB of the letter number and the CRB will expedite review and provide clarification of the applicable rule s as may be appropriate D A fee for the service is 100 A portion of the fee may be refunded at the discretion of Club Racing E Verification of compliance is based on the GCR as of the date of the written response to the member The GCR changes annually and there is no guarantee of compliance beyond the current rules season KHEKEKEKKEEKKEKKEK KKH KKEKKRHEKKEKKKEK KEK KEK KEK KKK KEKHE KK KEKRK KH KKK K KHER HK KEKKKE SPORTS CAR CLUB OF AMERICA INC 10 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes wune 2015 gt Sports Car Club of America Recommended Items for 2015 The following subjects were approved by the Board of Directors in their May 2015 meeting These items will be effective 6 1 2015 1 14612 May Fastrack Steve Harris Replacement for GCR 8 1 4 Compliance Review Thank you for your request The CRB recommends that the Board of Directors approve these changes to be effective 6 1 2015 Change 8 1 4 8 1 45 Protests Any entrant driver crew organizer or official participating in an event may protest any decision act or omission of another entrant driver cr
16. mpliance beyond the current rules season 2 15576 May Fastrack Terry Ozment Drones at the Track Add 2 2 6 2 2 6 Commercial and private unmanned aircraft systems aka drones are prohibited unless authorized in the Supplemental Regulations The SPORTS CAR CLUB OF AMERICA INC 11 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com A Recommended Rules Changes wune 2015 Sports Car Club of America CRB recommends that the Board of Directors approve these changes to be effective 6 1 2015 Recommended Items for 2016 The following subjects were approved by the Board of Directors in their May 2015 meeting These items will be effective 1 1 2016 Improved Touring IT 1 15424 April Fastrack Earl Richards Clarify IT Rule on Heater Component Removal Thank you for your letter Change 9 1 3 D e e Aircenditioning Climate control systems may be removed in whole or in part Change 9 1 3 D 3 g g Engine coolant fluid coolant heater hoses and clamps may be substituted Heater hoses may be plugged or bypassed looped or removed Heater water control valve s may be added or substituted Heater core shal netmay be removed Spec Miata SM 1 16475 Aril Fastrack Ralph Provitz Minimum Cylinder Head Thickness Thank you for your suggestion Change the values in the table for 9 1 7 C 1 f 1 5 245 5 235 inches 2 16783 May Fastrack Club Racing Board Update to 9 1
17. processed to create a smooth transition See diagram below The maximum dimensions measuring guide center line to chamber edge Se 0 040 maximum deburr where the head gasket 1 surface of the head meets the relief cut and the combustion chamber of the head Touring T4 1 16712 May Fastrack Touring Committee Allow Aftermarket Wheels Pontiac Solstice In T4 change the Notes for the Pontiac Solstice 06 09 The following items must remain stock shock struts including mounts eriginalwheels and transmission differential unless specified below Detachable hardtop GM part PCS O664 shall be installed latches shall be replaced w positive fasteners convertible top shall be removed Limited slip differential G80 factory ABS JL and suspension option ZOK allowed Cold Air intake permitted SPORTS CAR CLUB OF AMERICA INC 13 of 13 PO Box 19400 Topeka KS 66619 0400 800 770 2055 Fax 785 232 7214 www scca com
18. you for your letter The CRB recommends allowing the Kent Cam CW14 Lift 430 duration 316 degrees to be used in the YAC engines with mechanical tappets in the P2 class The YAC with this cam must use a 38mm venturi restrictor The CRB recommends that the Board of Directors approve this change effective 5 1 2015 In the P2 engine table line H in the Notes column add Kent Cam CW14 Lift 430 duration 316 degrees with mechanical tappets allowed with a 38mm venturi restrictor 2 13719 February Fastrack Jay Ivey 2 0L YAC and 2 0L Pinto Bore Size Thank you for your letter In the P2 class the CRB recommends allowing the maximum bore size for the 2 0L YAC and 2 0L Pinto engines to be 040 over STD for a maximum bore size of 3 620 This allows for rebuilds and to extend the life of the engine blocks The CRB recommends that the Board of Directors approve this change to be effective 5 1 2015 In line F of the P2 engine table in the notes column add Maximum bore size of 3 620 allowed for Pinto In line H of the P2 engine table in the notes column add Maximum bore size of 3 620 allowed GCR 1 16221 February Fastrack Club Racing Board Recommended Portion of Letter 15269 Thank you for your request Change 6 5 2 C 1 1 A car that improves its position relative to the field during the pace lap by moving forward moving out of line by more than half a car width or passing before the green flag is displayed may be pen
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