Section 13 Street Category - Sports Car Club of America
Contents
1. ments that undergo a significant compound change tread pattern change or other significant redesign reset the requirement for eligi bility described in Section 13 3 B A tire model which was previously allowed by these rules continues to be eligible for competition until specifically disallowed Reintroduction Models that were once discontinued will be consid ered a new model once reintroduced and must meet all the require ments of Section 13 3 C Other 1 Any tire which is OE ona car eligible for Street Category may be used N ew on that car in Regional Solo events OE tires must meet all require ments of Section 13 3 to be eligible for National Solo events Tires may be shaved evenly and parallel to the axis of rotation but may not otherwise be siped grooved or modified No recap and or retread tires may be used The tire must not appear on the following list which may be altered at any time by the SEB upon notification of membership No tire models are currently listed 13 4 WHEELS Any type wheel may be used provided it complies with the following A It is the same width as standard and as installed it does not have an 74 2015 SCCA National SoLo RuLes 13 STREET offset more than 7 00 mm 0 275 from a standard wheel for the car The resultant change in track dimensions is allowed B Wheel rim diameter may be increased or decreased 1 from the stan dard part Wheel2. E Additional battery hold down hardware may be added to supplement the standard equipment in order to meet Section 3 3 3 B 18 Safety In spections Requirements It may serve no other purpose F Tire pressure monitoring systems TPMS may be disabled Altering the signal to the TMPS is permitted G On cars without the ability to turn off electronic stability control and or traction control ESC TC from the manufacturer modifications to defeat the ESC TC are permitted These modification are limited to al tering the inputs to the ESC TC processor e g removing fuses unplug ging yaw or steering angle sensors altering signals and may serve no other purpose Any codes or error lights resulting from ESC TC modifi cations are permitted 13 10 ENGINE AND DRIVE TRAIN A The engine air filter element may be removed or replaced provided the air flow path remains as originally designed i e no additional open ings No other components of the air induction system may be re moved replaced or modified B Engines may be rebored to the manufacturer s 1st standard overbore not to exceed 0 020 0 508 mm Sleeving is allowed to repair to the standard bore Only OE type standard or 1st overbore pistons of the same configuration and of the same or greater weights are permitted No interchange between cast and forged pistons is allowed C Any part of the exhaust system beyond downstream from the header manifetd er ast catalytic
3. changed E Alternate shift knobs or paddles are allowed 72 2015 SCCA Nationa SoLo RULES 13 STREET F Spare tires tools and jacks may be removed Any fastening hardware and or other pieces that can no longer be firmly secured in the absence of the spare tire may be removed if necessary to ensure compliance with Section 3 3 3 B 1 Safety Inspection Requirements G Roll Bars and Roll Cages 1 Roll bars may be added Roll bars may be welded in Standard roll over hoops and covers may be removed if the resulting installation meets Appendix C A Basic Design Considerations The total weight of components added must not be less than that of components re moved 2 Roll cages may be added It is strongly recommended that roll cages be constructed according to the Club Racing GCR though they must be bolted not welded into the automobile and be contained within the driver passenger compartment A roll cage has more than four attachment points to the body or frame or has bracing both fore and aft of the main hoop H Driver restraints as outlined in Section 3 3 1 are allowed Seats may not be cut to allow for the installation of alternate seat belts or harness es Passive restraint systems may disabled but may not be removed Removeable seat headrests may be repositioned using the original mounting hardware only if the OE components permit it with no modi fications This includes removing a headrest and reinstalling it back
4. converter if so equipped may be substituted or removed provided the system exits the car in the original location and meets the requirements of Section 3 3 3 B 16 Section 3 5 and Ap pendix I where applicable Vehicles equipped with exhausts that exit in multiple locations may change to a single outlet in any of the origi nal locations Stainless steel heat exchangers are permitted only if the physical dimensions and configuration remain unchanged Modifications of any type including additions to or removal of the catalytic converters thermal reactors or any other pollution control devices in the exhaust system are not allowed and the system must be operable Replacement catalytic converters must be OE if the vehicle has not exceeded the warranty period as mandated by the EPA Con verters must be of the same type and size and used in the same loca 78 2015 SCCA N SoLo R cade Fastrack News July 2015 page 14 13 STREET tion as the original equipment converter s This does not allow for a high performance unit If the vehicle has exceeded the warranty period replacement catalytic converters must be OE type as per Section 13 0 Exhaust hangers which are bolted or welded on the car are considered part of the body and may not be changed or removed D Any oil filter may be added if not originally equipped Canister type oil filters may be replaced with a spin on type filter using a minimum amount of hardware and connecting l
5. permitted The use of any bushing material is permitted A bushing may be implemented as a bearing B Substitution addition or removal of anti roll bars may serve no other purpose than that of an anti roll bar C No modification to the body frame or other components to accommo date anti roll bar addition or substitution is allowed except for the drill ing of holes for mounting bolts Non standard lateral members which connect between the brackets for the bar are not permitted 13 8 SUSPENSION A Standard as defined herein suspension springs must be used They may not be cut shortened or collapsed Spring perches may not vary from the OE shape within the working part of the perch B Both the front and rear suspension may be adjusted through their de signed range of adjustment by use of factory adjustment arrangements or by taking advantage of inherent manufacturing tolerances This en compasses both alignment and ride height parameters if such adjust ments are provided by the standard components and specified by the factory as normal methods of adjustment However no suspension part may be modified for the purpose of adjustment unless such modifica tion is specifically authorized by the factory shop manual C Suspension bushings including but not limited to those which carry the weight of the vehicle and determine ride height may not be replaced with bushings of a different material or dimension D Replacement contro
6. spacers are permitted provided the resultant combination com plies with the offset requirements of this Section On vehicles supplied with an OE wheel spacer the wheel spacer shall be considered as a part of the wheel Wheel studs lug nuts valve stems including pressure relief types and or bolt length may be changed Tire pressure monitoring sen sors may be removed Centerlock Spline Drive Knock off type hubs may be converted to lug type hubs provided the resultant combination complies with the offset re quirements of this Section 13 5 SHOCK ABSORBERS A The make of shock absorbers struts and strut housings may be sub stituted providing that the number type e g tube lever etc system of attachment and attachment points are not altered except as noted below The interchange of gas and hydraulic shocks absorbers is per mitted The following restrictions apply 1 No more than 2 separate external shock damping adjustment con trols are allowed This permits the use of shocks which originally came with more than two external adjustments which have been converted to double adjustables only if the additional adjustment controls have been permanently disabled e g via welding ep oxying grinding off Gas pressure adjustment is not considered a damping adjustment N Suspension geometry and alignment capability not including ride height may not be altered by the substitution of alternate shock ab sorbers Afterma
7. 13 STREET 13 STREET CATEGORY Cars running in Street Category must have been series produced with nor mal road touring equipment capable of being licensed for normal road use in the United States and normally sold and delivered through the manu facturer s retail sales outlets in the United States A Canadian market ve hicle is eligible for Street category if it is identical to the US market coun terpart except for comfort and convenience modifications as allowed per Section 13 2 A A member may request classing for any car models not specifically listed in Street Category provided that vehicle was produced in quantities of at least 1 000 in that model year A car will remain eligible for National events through the end of the 30th calendar year after the manufacturer designated model year of the car This eligibility limitation applies only to the Street classes Except for modifications authorized below Street Category cars must be run as specified by the manufacturer with only standard equipment as de fined by these Rules This requirement refers not just to individual parts but to combinations thereof which would have been ordered together on a specific car Any other modifications or equipment will place the car in Street Touring Street Prepared Street Modified Prepared or Modified Categories as appropriate Configurations involving damaged parts e g blown fuses are not typically authorized by the manufacturer and henc
8. Including Hawk Black Blue HT and DTC motorsports pads Also Available Quiet Slot rotors HPS high performance street pads Performance Ceramic pads HP Plus high performance pads PREMIUM ROTORS e Cryogenically treated 7 d 5 DISC BRAKES AUSTRALIA rotors available 4000 amp 5000 SERIES POSI QUIET J 1 LOADED CALIPERS i ROTORS p e 4000 Series has a unique slotted design for the road or track e 5000 Series has a 2 piece design for extreme performance with a black alumalite center hat brembo SPORT SLOTTED tte OR SPORT DRILLED ROTORS a S QoS Provide excellent stopping power while GOODRIDGE rs A offering a bold aggressive G STOP BRAKELINE KIT e appearance i High performance stainless steel brake lines provide a more responsive and firm brake pedal FREE SHIPPING For all brakes suspension and other parts and accessories on all orders over 50 j Visit www tirerack com freeshipping for details Toka A owim 888 380 8473 seie MEMA
9. airs may not result in a part or combination of parts that provides a competitive advantage e g significant change to weight suspension control power etc as compared to the standard part s Com petitors are strongly cautioned to use this allowance to make common sense repairs only It is not permitted to use non compliant parts even if they have been set to OE specifications Refer to Appendix F for past clarifications of these rules 13 2 BODYWORK A Accessories gauges indicators lights and other appearance comfort and convenience modifications which have no effect on performance and or handling and do not materially reduce the weight of the car are permitted This does not allow driver s seat substitutions or the removal of tow hooks or tie down loops Delayed shutdown devices such as the Turbo Timer which perform no function while the car is in motion are permitted This does permit the installation of an ad ditional mirror e g Wink but does not allow the removal of the original mirror B Data acquisition systems including video cameras and the accompa nying sensors are allowed but may serve no other purpose during arun than real time display and data recording a Hood straps or fasteners may be added D Alternate steering wheels are allowed provided the outside diameter is not changed by more than one inch from the standard size Steering wheels with an integral airbag may not be
10. by April 30 are not eligible for Solo competition until after the Solo National Championships of the year 2015 SCCA National SoLo Rules 73 4Fastrack News April 2015 page 13 13 STREET A Specifications 1 2 4 5 Minimum UTQG Treadwear Grade of 200 Minimum molded tread depth of 7 32 as specified by the manufac turer Listed in a current year or prior 2 years of the Tire Guide and or the Tread Design Guide www tireguides com US Department of Transportation DOT approval Tires must be designed for highway use on passenger cars B Eligibility Requirements The following are prerequisites before a tire can be used in competition at National Solo events 1 Tire availability Tires are considered available when competitors can take possession through retail channels Pre orders are not con sidered available Tires must be equally available to all competitors Tires that are in short supply do not specifically violate Section 13 3 Extensive short ages may result in the tire being placed on the exclusion list until supply is replenished Tire variations differing from standard speci fication delivered only on a limited basis or only to selected com petitors may not be used Tire models must have tires available in at least 4 rim diameters and in at least 6 sizes which meet these requirements Material Change Tires which previously met the eligiblity require
11. e are not allowed Option package conversions may be performed between specific vehicles of a particular make and model but only between configurations from within a particular model year Such conversions must be totally complete and the resultant car must meet all requirements of this Section These re quirements are not met by simply pulling a fuse to disable a feature which distinguishes one model from another Alternate parts listed in a factory parts manual are not authorized unless their use is specifically referenced in the factory service manual or in a service bulletin for the specific model See Sections 3 8 and 8 3 1 for documentation requirements Alternate components which are normally expendable and considered replacement parts e g engine and wheel bearings seals gaskets filters belts bolts bulbs batteries brake rotors clutch discs pressure plates suspension bushings drivetrain mounts fenders trim pieces fuel filler caps etc may be used provided they are essentially identical to the stan dard parts e g have the same type size hardness weight material etc are used in the same location and provide no performance benefit The allowance for use of such replacements does not include camshafts differ ential covers or ring and pinion sets nor does it authorize the use of pis ton rings having different configurations e g Total Seal from those of the original Hardware items nuts bol
12. ines E The installation of water expansion tanks is allowed The installation of oil catch tanks is allowed provided the function of the PCV system is not altered F Thermostats may be added or substituted A thermostat is a device which controls the passage of water G Silicone replacement hoses are permitted as alternate components pro vided they meet the requirements of Section 13 0 with regard to size shape location and performance equivalence Replacement induction system air intake hoses must also match the standard part in stiffness contour and internal wall texture H Any oil or grease including synthetic is permitted I Valve seats and guides in older engines originally designed for leaded fuel may be only substituted with alternate components if the dimen sions are the same as those of the standard components 2015 SCCA National SoLo Rules 79 TIRE RACK COM Pda TECH TYPE 200 AMBER STREET PERFORMANCE Ideal for track and street BRAKE PADS J Combining the benefits vial on cH nC EOI TECH of premium street STR 660 ULTRA PERFORMANCE brake pads with 24 RACE BRAKE FLUID 500ML 28 aggressive friction formulas suitable for i Ideal for race use light track days and autocross events SPORT DRILLED OR SLOTTED ROTORS e Premium black E coating finish e 100 fully machined finish including hats e Cryogenically treated rotors available THE COMPLETE LINE OF HAWK COMPETITION PADS
13. l arms for vehicles having integral bushing arm as semblies must be standard manufacturer parts as per Sections 12 and 13 0 E If offered by the manufacturer for a particular model and year the use of shims special bolts removal of material to enlarge mounting holes and similar methods are allowed and the resulting alignment settings are permitted even if outside the normal specification or range of specifica tions recommended by the manufacturer If enlarging mounting holes is specifically authorized but no material removal limits are specified material removal is restricted to the amount necessary to achieve the maximum factory alignment specification 13 9 ELECTRICAL SYSTEM A The make of spark plugs points ignition coil and high tension wires 2015 SCCA National SoLo Rules 77 13 STREET is unrestricted including spark plug wires having an in line capacitor Substitution or addition of ignition coil mounting brackets is permitted provided they affix to the original standard location and serve no other purpose Modification of the distributor cap for the purpose of install ing allowed non standard components is not permitted B On cars made prior to January 1 1968 any ignition system using a stan dard distributor without modification may be used C Ignition settings may not be adjusted outside factory specifications D No changes are permitted to electronic engine management systems or their programming
14. n bump stop is considered to be performing the function of a spring Therefore the compressed length of the shock at the ini tial point of contact with the bump stop may not be increased from the standard part although the bump stop may be shortened for the pur pose of installing non standard shocks Bump stops installed externally and concentric with the shaft of a shock may be drilled out to fit a larger diameter shock shaft Bump stops may be substituted for the purposes of installing non standard shocks E A hole may be added through the bodywork to route the reservoir and hose to a remote mounting location Such holes may serve no other pur pose F A hole may be added to interior body panels the engine compartment the trunk and or a strut bar to provide access to the adjustment mech anism on a shock absorber The hole may serve no other purpose and may not be added through the exterior body panels 13 6 BRAKES A The make and material of brake linings may be changed 76 2015 SCCA Nationa SOLo RULES 13 STREET B Substitution of clutch and brake hydraulic lines with solid metal or braided metal is allowed on all cars manufactured before model year 1992 C Alternate brake bleeder fittings e g Speedbleeders are permitted They may serve no other purpose 13 7 ANTI ROLL SWAY BARS A Substitution addition or removal of a single anti roll bar and support ing hardware brackets endlinks bushings etc is
15. nd of a strut to the body or frame on a strut type suspension is a suspension bushing not a shock bush ing For cars with a bayonet shaft type upper shock mount this allowance permits the removal of the shock bushing from the upper mounting plate e g drilling cutting burning out the bushing and replacing it with another bushing This also includes shock bushings located in con trol arms etc This does not allow other modifications to the plate itself or use of an alternate plate C To facilitate the installation of commonly available aftermarket shock absorbers struts or strut inserts whose shaft size is larger than the center hole of an upper shock mount assembly that hole may be en larged by the minimum necessary to accommodate the shock shaft size provided the following restrictions are met 1 the enlarged hole must remain concentric with the original configu ration 2 the enlargement of the hole does not require modification of a bear ing as opposed to a washer sleeve or plate 3 neither the hole enlargement nor the location of the shock shaft changes any alignment parameter Provided these constraints are met this permits enlarging of the center hole in an upper shock mount with an integrated rubber bushing where the bushing is in tegral to the mount and bonded to the plate and the mount is pro vided by the OEM as an assembly This includes drilling out and or removal of the metal sleeve D A suspensio
16. rket strut housings are allowed provided that they meet the Street category shock requirements defined herein i e that no suspension geometry changes result This includes the po sition of the steering arm attachment point in the case of struts with integrated steering arms Ww Adjustable spring perches are allowed but the spring loadbearing surface must be in the same location relative to the hub as on the standard part Shims may be used to achieve compliance The fully extended length must be within 1 25 4 mm of the di mension of the standard part D uI Electronically controlled shocks may not be used on vehicles not originally equipped with such units Vehicles originally equipped with electronically controlled shocks may use the standard parts or non electronically controlled alternative shocks subject to all the re quirements of Section 13 5 Non standard electronically controlled shocks are not allowed B The mounting hardware shall be of the original type The use of any shock absorber bushing material including metal is permitted Pressed 2015 SCCA National SoLo Rules 75 13 STREET or bonded bushings may be removed from standard parts to facilitate the use of alternate bushings which fit in the original location without alterations to the part This does not permit the use of an offset shock bushing A shock absorber bushing may be implemented as a spherical bearing The bushing attaching the e
17. ts etc may be replaced by similar items of un restricted origin Safety wire threadlocker compounds and locking nuts 2015 SCCA NationaL SoLo Rules 71 13 STREET are permitted These allowances are strictly to allow components to be replaced from alternate sources other than the original manufacturer They should not be construed as an allowance to replace components with those which could be considered a higher performance alternative Parts available as replacements through the dealers parts department the fac tory or any other source which do not meet standard part specifications e g hardness size etc are non compliant in Street Category except as specifically provided elsewhere in these rules Specific vehicle classifications are located in Appendix A of these rules 13 1 AUTHORIZED MODIFICATIONS If a modification is not specifically authorized in this or previous Sections of these Rules itis not allowed The addition of small holes for attachment hardware for authorized modi fications is implicit e g holes for fasteners to mount additional gauges holes for brackets to mount shock absorber remote reservoirs etc How ever these holes may serve no other purpose All repairs must comply with factory authorized methods and procedures or industry standard methods as follows If the OEM does not provide an appropriate method of repair industry standard methods and procedures may be used Such rep
18. wards A horizontal harness bar may be used as part of the instal lation hardware for allowed driver restraints provided it has no more than 2 attachment points to the chassis and is bolted at those locations A C type harness bar may also be used It may have 4 bolted attachment points to the chassis 2 primary and 2 supporting connections to resist rotation Truss type harness bars are not allowed I Cars may add one rear trailer hitch The resulting weight addition is allowed The hitch may serve no other purpose Factory tie downs and cosmetic pieces e g diffusers may be modified or removed to fa cilitate hitch installation Complete or partial removal of the hitch is allowed for competition provided it does not result in a reduction in weight compared to the unmodified standard configuration J Tow bar brackets may be installed but may serve no other purpose K Any item that cannot be held permanently in place by factory installed fasteners may be removed 13 3 TIRES Tires may be replaced with any size that fit the allowable wheels and fender wells without modification Tires may be excluded for but not limited to low volume production extensive availability limitations and specialty design Tires must meet the following requirements to be eligible for use in Street category No tire model will be eligible for Solo competition until it meets all requirements of this Section Tire models not meeting the requirements
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