{"id":260,"date":"2010-10-13T10:17:01","date_gmt":"2010-10-13T17:17:01","guid":{"rendered":"http:\/\/www.rhoadescamaro.com\/build\/?page_id=260"},"modified":"2012-08-01T22:10:50","modified_gmt":"2012-08-02T05:10:50","slug":"stx-ruleset","status":"publish","type":"page","link":"http:\/\/www.rhoadescamaro.com\/build\/?page_id=260","title":{"rendered":"STX Ruleset"},"content":{"rendered":"<p>Below are the applicable rules that define this build, excerpted from the 2010 SCCA Solo rulebook. \u00a0It takes a bit of reading comprehension (a phrase I use here not sarcastically) to really get all of this. \u00a0For the amateur rulebook readers in the audience, the overriding thing to remember here is, &#8220;if it doesn&#8217;t say you can, then you can&#8217;t&#8221;. \u00a0When I show up to my first race in the car, every single thing that&#8217;s changed from when it rolled off the showroom floor in 1967 must be accounted for by one of the rules that follow.<\/p>\n<p>I&#8217;ve \u00a0placed the Street Touring category rules first, as they are most relevant. \u00a0They &#8220;build&#8221; on the Stock rules that follow.<\/p>\n<p>14. STREET TOURING CATEGORY<br \/>\nThe Street Touring category of vehicle modi\ufb01 cations is meant to \ufb01 t be-<br \/>\ntween the current Stock and Street Prepared categories. This category<br \/>\nprovides a natural competition outlet for auto enthusiasts using afford-<br \/>\nable sports cars and sedans equipped with common suspension, en-<br \/>\ngine, and appearance modi\ufb01 cations which are fully legal and compat-<br \/>\nible with street use anywhere in the country<br \/>\nVehicle eligibility lists are now in Appendix A.<br \/>\nUnder the provisions of Section 1.1 of these rules, Regions are free<br \/>\nto allow any other version of the ST concept which meets their local<br \/>\nneeds.<br \/>\nSee Sections 3.8 and 8.3 for documentation requirements.<br \/>\n14.1 AUTHORIZED MODIFICATIONS<br \/>\nAll Solo Rules Stock Category allowances, plus all allowances con-<br \/>\ntained in 14.1 through 14.10.<br \/>\n14.2 BODYWORK<br \/>\nA. Pedal kits and other interior cosmetic accessories may be added.<br \/>\n\u201cDress-up\u201d items such as chrome dipsticks and non-standard \ufb01 ller<br \/>\ncaps are permitted, provided they serve no other purpose.<br \/>\nB. The driver and front passenger seats may be replaced, with the fol-<br \/>\nlowing restrictions: The seating surface must be fully upholstered.<br \/>\nThe top of the seat, or an attached headrest, may not be below the<br \/>\ncenter of the driver\u2019s head. The seat, including mounting hardware,<br \/>\nmust weigh at least 25 pounds and must be attached using the OE<br \/>\nbody mounting holes\/studs. Additional mounting points may be add-<br \/>\ned.<br \/>\nC. Factory rub strips, emblems, and mud \ufb02 aps may be removed.<br \/>\nD. Alternate steering wheels are allowed except that steering wheels<br \/>\nwith an integral airbag may not be changed.<br \/>\nE. Fenders may not be cut or \ufb02 ared but the inside lip may be rolled<br \/>\nto gain additional tire clearance. (The outer fender contour may not<br \/>\nbe changed.) Flares that are part of body kits may be attached to<br \/>\nthe stock fenders. Plastic and rubber wheel well splash shields may<br \/>\nbe modi\ufb01 ed for tire clearance and to accommodate a rolled inside<br \/>\nfender lip. The intention is to permit \ufb01 tting the maximum allowable<br \/>\ntire size, and the modi\ufb01 cations may serve no other purpose (e.g. air<br \/>\nintake, brake ducts, etc.). No other changes to the stock fenders or<br \/>\nwheel wells are permitted.<br \/>\nF. Addition of spoilers, splitters, body kits, rear wings and nonfunctional<br \/>\nscoops\/vents is allowed. The intent of this allowance is to accommo-<br \/>\ndate commonly available appearance kits, and replicas thereof, which<br \/>\nhave no signi\ufb01 cant aerodynamic function at Solo speeds. Body kits<br \/>\nare limited to bumper covers (including modi\ufb01 ed OE bumper covers),<br \/>\nvalances, side skirts, and fender \ufb02 ares. Standard parts may not be<br \/>\nremoved except for the substitution of spoilers, rear wings, bumper<br \/>\ncovers and valances. Rear wings must attach only aft of the rear<br \/>\nwheel centerline.<br \/>\nThe allowances regarding wings and spoilers only allow swapping<br \/>\nlike for like if the original device was not an OE option as con\ufb01 gured<br \/>\nby the factory, i.e. a spoiler for a spoiler or a wing for a wing. If a<br \/>\nvehicle is available without a wing or spoiler from the manufacturer<br \/>\nthen either can be installed.<br \/>\nSurface area of all splitters, spoilers and rear wing (see 12.9) shall<br \/>\nnot exceed 5 square feet in sum total. Substitution of rear spoilers<br \/>\nor wings must retain any original third brake light functionality unless<br \/>\notherwise equipped. No underbody panels may be added or substi-<br \/>\ntuted. The drilling of holes for the purpose of mounting these pieces<br \/>\nis permitted.<br \/>\nG. Strut bars may be added, removed, modi\ufb01 ed, or substituted with all<br \/>\ntypes of suspension. Strut bars may be mounted only transversely<br \/>\nacross the car from upper right to upper left suspension mounting<br \/>\npoint and from lower right to lower left suspension mounting point.<br \/>\nNo other con\ufb01 guration is permitted. Additional holes may be drilled<br \/>\nfor mounting bolts. Only bolt-on attachment is permitted. Interior trim<br \/>\npanels may be modi\ufb01 ed to allow installation of strut bars. Holes or<br \/>\nslots may be no larger than necessary and may serve no other pur-<br \/>\npose. This does not permit any modi\ufb01 cations to the frame or unibody<br \/>\nbeyond the allowed mounting holes.<br \/>\nH. Longitudinal (fore-aft) subframe connectors (\u201cSFCs\u201d) are permitted<br \/>\nwith the following restrictions:<br \/>\n1. They must only connect previously unconnected boxed frame rails<br \/>\non unibody vehicles.<br \/>\n2. Each SFC must attach at no more than three points on the uni-<br \/>\nbody (e.g. front, rear, and one point in between such as a seat<br \/>\nmount brace or rocker box brace).<br \/>\n3. SFCs must be bolted in place and not welded.<br \/>\n4. No cutting of OE subframes or \ufb02 oorpan stampings is permitted.<br \/>\nDrilling is permitted for mounting bolts only.<br \/>\n5. No cross-car\/lateral\/triangulated connections directly between the<br \/>\ndriver\u2019s side and passenger\u2019s side SFCs are permitted. Connec-<br \/>\ntions to OE components such as tunnel braces or closure panels<br \/>\nvia bolts are allowed and count as the third point of attachment.<br \/>\nNo alteration to the OE components is permitted.<br \/>\n6. SFCs may not be used to attach other components (including but<br \/>\nnot limited to torque arm front mounts or driveshaft loops) and<br \/>\nmay serve no other purpose.<br \/>\n14.3 TIRES<br \/>\nTires must meet the eligibility requirements of the Stock category (ex-<br \/>\ncluding 13.3.F), with the following additional restrictions:<br \/>\nA. Tires may have section widths up to and including the following:<br \/>\nST, STS, STR (AWD) \u2013 225 mm<br \/>\nSTX (AWD), STU (AWD) \u2013 245 mm<br \/>\nSTR (2WD) \u2013 255 mm<br \/>\nSTX (2WD) \u2013 265 mm<br \/>\nSTU (2WD) \u2013 285 mm<br \/>\nB. Tires must have a minimum UTQG treadwear rating of 140.<br \/>\nC. Tire models must not appear on the following list, which may be al-<br \/>\ntered at any time by the SEB upon noti\ufb01 cation of the membership.<br \/>\nPirelli P Zero Corsa<br \/>\n14.4 WHEELS<br \/>\nAny wheels are allowed with widths up to the following:<br \/>\nST, STS, STR (AWD) \u2013 7.5\u201d<br \/>\nSTX (AWD) \u2013 8.0\u201d<br \/>\nSTX (2WD), STR (2WD) \u2013 9.0\u201d<br \/>\nSTU \u2013 unlimited<br \/>\n14.5 SHOCK ABSORBERS<br \/>\nA. Shock absorber bump stops may be altered or removed.<br \/>\nB. Any shock absorbers may be used. Shock absorber mounting brack-<br \/>\nets which serve no other purpose may be altered, added, or replaced,<br \/>\nprovided that the attachment points on the body\/ frame\/subframe\/<br \/>\nchassis\/suspension member are not altered. This installation may<br \/>\nincorporate an alternate upper spring perch\/seat and\/or mounting<br \/>\nblock (bearing mount). The system of attachment may be changed.<br \/>\nThe number of shock absorbers shall be the same as Stock. No<br \/>\nshock absorber may be capable of adjustment while the car is in mo-<br \/>\ntion, unless \ufb01 tted as original equipment. MacPherson strut equipped<br \/>\ncars may substitute struts, and\/or may use any insert. This does not<br \/>\nallow unauthorized changes in suspension geometry or changes in<br \/>\nattachment points (e.g., affecting the position of the lower ball joint<br \/>\nor spindle). It is intended to allow the strut length changes needed to<br \/>\naccommodate permitted modi\ufb01 cations which affect ride height and<br \/>\nsuspension travel.<br \/>\n14.6 BRAKES<br \/>\nA. Cross drilled and\/or slotted brake rotors may be \ufb01 tted (same size\/<br \/>\ntype\/material as standard) provided all such voids are within the disc<br \/>\narea, and comprise no more than 10% of that area<br \/>\nB. Brake lines may be substituted with alternate DOT approved \ufb02 exible<br \/>\nbrake lines.<br \/>\nC. Air ducts may be \ufb01 tted to the brakes, provided that they extend in a<br \/>\nforward direction only, and that no changes are made in the body\/<br \/>\nstructure for their use. They may serve no other purpose.<br \/>\nD. Original equipment ABS braking systems may be electrically dis-<br \/>\nabled, but may not be removed or altered in any other way.<br \/>\nE: STX and STU: Non-standard brake rotors may be used provided<br \/>\nthey are of equal or larger dimensions (diameter and thickness)<br \/>\nand made of ferrous material (e.g. iron). Thickness includes the in-<br \/>\ndividual plates of a vented rotor, as well as the overall dimension.<br \/>\nAluminum rotor hats are allowed. Cars originally equipped with solid<br \/>\n(non-vented) rotors may utilize vented rotors. Cross-drilled and\/or<br \/>\nslotted brake rotors may be \ufb01 tted provided all such voids are within<br \/>\nthe disc area, and comprise no more than 10% of that area. Brake<br \/>\ncalipers and mounting brackets may be replaced provided they bolt<br \/>\nto the standard locations and the number of pistons is equal to or<br \/>\ngreater than standard. A functioning emergency brake of the same<br \/>\ntype, operation, and actuation as OE must be present. Drum brakes<br \/>\nmay be replaced with disc brakes of a diameter equal to or greater<br \/>\nthan the inside diameter of the standard drum. Such conversions<br \/>\nmust be bolted, not welded, to the axle\/trailing arm\/upright, and must<br \/>\ninclude an integral, redundant emergency brake. Changes to back-<br \/>\ning plates\/dust shields\/brake lines to accommodate these changes<br \/>\nare permitted but may serve no other purpose.<br \/>\n14.7 ANTI-SWAY BARS<br \/>\nSubstitution, addition, or removal of any anti-roll bar(s) is permitted.<br \/>\nBushing material, method of attachment, and locating points are un-<br \/>\nrestricted. Components such as anti-roll bars and strut housings that<br \/>\nserve dual purposes by also functioning as suspension locators may<br \/>\nnot be modi\ufb01 ed in ways that change the suspension geometry or steer-<br \/>\ning geometry. Non-standard lateral members which connect between<br \/>\nthe brackets for the bar, including allowed strut bars per 14.2.G, are<br \/>\npermitted.<br \/>\n14.8 SUSPENSION<br \/>\nA. Ride height may only be altered by suspension adjustments, the<br \/>\nuse of spacing blocks, leaf spring shackles, torsion bar levers, or<br \/>\nchange or modi\ufb01 cation of springs or coil spring perches. This does<br \/>\nnot allow the use of spacers that alter suspension geometry, such as<br \/>\nthose between the hub carrier and lower suspension arm. Springs<br \/>\nmust be of the same type as the original (coil, leaf, torsion bar, etc.)<br \/>\nand except as noted herein, must use the original spring attachment<br \/>\npoints. This permits multiple springs, as long as they use the original<br \/>\nmount locations. Coil spring perches originally attached to struts or<br \/>\nshock absorber bodies may be changed or altered, and their position<br \/>\nmay be adjustable. Spacers are allowed above or below the spring.<br \/>\nSuspension bump stops may be altered or removed.<br \/>\nB. Suspension bushings may be replaced with bushings of any mate-<br \/>\nrials (except metal) as long as they \ufb01 t in the original location. Off-<br \/>\nset bushings may be used. In a replacement bushing the amount<br \/>\nof metal relative to the amount of nonmetallic material may not be<br \/>\nincreased. This does not authorize a change in type of bushing (for<br \/>\nexample ball and socket replacing a cylindrical bushing), or use of<br \/>\na bushing with an angled hole whose direction differs from that of<br \/>\nthe original bushing. If the Stock bushing accommodated multi-axis<br \/>\nmotion via compliance of the component material(s), the replace-<br \/>\nment bushing may not be changed to accommodate such motion<br \/>\nvia a change in bushing type, for example to a spherical bearing or<br \/>\nsimilar component involving internal moving parts. Pins or keys may<br \/>\nbe used to prevent the rotation of alternate bushings, but may serve<br \/>\nno other purpose than that of retaining the bushing in the desired<br \/>\nposition.<br \/>\nC. The following allowances apply to strut-type suspensions: Adjustable<br \/>\ncamber plates may be installed at the top of the strut and the original<br \/>\nupper mounting holes may be slotted. The drilling of holes in order to<br \/>\nperform the installation is permitted. The center clearance hole may<br \/>\nnot be modi\ufb01 ed. Any type of bearing or bushing may be used in the<br \/>\nadjustable camber plate attachment to the strut. The installation may<br \/>\nincorporate an alternate upper spring perch\/seat and\/or mounting<br \/>\nblock (bearing mount). Any ride height change resulting from instal-<br \/>\nlation of camber plates is allowed. Caster changes resulting from the<br \/>\nuse of camber plates are permitted.<br \/>\nD. Differential mount bushings may be replaced, but must attach in the<br \/>\nfactory location(s) without additional modi\ufb01 cation or changes. Dif-<br \/>\nferential position may not be changed. The amount of metal in a<br \/>\nreplacement bushing may not be increased relative to the amount of<br \/>\nmetal found in a standard bushing for the particular application. Solid<br \/>\nmetal bushings are speci\ufb01 cally prohibited.<br \/>\nE. Transmission mounts may be replaced, but must attach in the factory<br \/>\nlocation(s) without additional modi\ufb01 cation or changes. Transmission<br \/>\nposition may not be changed. The amount of metal in a replacement<br \/>\nmount may not be increased relative to the amount of metal found in<br \/>\na standard mount for the particular application. Solid metal mounts<br \/>\nare speci\ufb01 cally prohibited.<br \/>\nF. Steering rack bushings may be replaced, but must attach in the fac-<br \/>\ntory location(s) without additional modi\ufb01 cation or changes. Steering<br \/>\nrack position may not be changed. The amount of metal in a replace-<br \/>\nment bushing may not be increased relative to the amount of metal<br \/>\nfound in a standard bushing for the particular application. Solid metal<br \/>\nbushings are speci\ufb01 cally prohibited. This does NOT allow shimming<br \/>\nor otherwise relocating the steering rack.<br \/>\nG. Camber bolts may be installed providing these parts use the original,<br \/>\nunmodi\ufb01 ed mounting points and meet the restrictions speci\ufb01 ed in<br \/>\n14.5.B. Caster changes resulting from the use of camber bolts are<br \/>\npermitted.<br \/>\nH. Solid axle suspension allowances:<br \/>\n1. Addition or replacement of suspension stabilizers (linkage con-<br \/>\nnecting the axle housing or DeDion to the chassis, which controls<br \/>\nlateral suspension location) is permitted.<br \/>\n2. Traction bars or torque arms may be added or replaced.<br \/>\n3. A Panhard rod may be added or replaced.<br \/>\n4. The upper arm(s) may be removed, replaced, or modi\ufb01 ed, and the<br \/>\nupper pickup points on the rear axle housing may be relocated.<br \/>\n5. The lower arms may not be altered, except as permitted under<br \/>\n14.8.B, or relocated. Methods of attachment and attachment<br \/>\npoints are unrestricted, but may serve no other purpose (e.g.<br \/>\nchassis stiffening). This does not authorize removal of a welded-<br \/>\non part of a subframe to accommodate the installation.<br \/>\nI. Camber kits, also known as camber compensators, may be installed.<br \/>\nThese kits consist of either adjustable length arms or arm mounts<br \/>\nthat provide a lateral adjustment to the effective length of a control<br \/>\narm. Alignment outside the factory speci\ufb01 cations is allowed. The fol-<br \/>\nlowing restrictions apply:<br \/>\n1. On double\/unequal arm (e.g. wishbone, multi-link) suspensions,<br \/>\nonly the upper arms OR lower arms may be modi\ufb01 ed or replaced,<br \/>\nbut not both. Non-integral longitudinal arms that primarily control<br \/>\nfore\/aft wheel movement (e.g. trailing arm(s) or link(s) of a multi-<br \/>\nlink suspension) may not be replaced, changed, or modi\ufb01 ed.<br \/>\n2. On arm-and-strut (MacPherson\/Chapman) suspensions, the lower<br \/>\narms may be modi\ufb01 ed\/replaced OR other methods of camber ad-<br \/>\njustment as allowed by paragraphs 14.8.B, C, or G may be used,<br \/>\nbut not both.<br \/>\n3. On swing or trailing arm suspensions, the main arms may not be<br \/>\nmodi\ufb01 ed or replaced, but lateral locating links\/arms may be modi-<br \/>\n\ufb01 ed or replaced.<br \/>\n4. The replacement arms or mounts must attach to the original stan-<br \/>\ndard mounting points. All bushings must meet the requirements of<br \/>\n14.8.B. Intermediate mounting points (e.g. shock\/spring mounts)<br \/>\nmay not be moved or relocated on the arm, except as incidental<br \/>\nto the camber adjustment. The knuckle\/bearing housing\/spindle<br \/>\nassembly cannot be modi\ufb01 ed or replaced.<br \/>\nNote: Many modern suspension designs known by other names,<br \/>\nactually function as double A-arm designs. These include the rear<br \/>\nsuspensions on 88+ Honda Civic\/Integra, Neon, E36 BMW, and<br \/>\nmost \u201cmulti-link\u201d and are covered by 14.8.I.1.<br \/>\nJ. On strut-equipped cars, the strut\u2019s lower integral mounting bracket,<br \/>\nfor attachment to the upright or spindle, is unrestricted provided it<br \/>\nattaches to the stock location. Any resulting change to the position<br \/>\nof the strut centerline is allowed. Such brackets shall serve no other<br \/>\npurpose. This does not allow for changes to the integral steering arm<br \/>\non cars that have the steering arm integrated with the strut body.<br \/>\nK. Changes in alignment parameters that result directly from the use of<br \/>\nthe allowed components are permitted. For example, the dimension-<br \/>\nal changes resulting from the use of a cylindrical offset bushing that<br \/>\nmeets the restrictions of 14.8.B are allowed, including those resulting<br \/>\nfrom a change in the pivoting action to:<br \/>\n(1) about the mounting bolt, or<br \/>\n(2) about the bushing itself.<br \/>\nL. Subframe mount bushings may be replaced, but must attach in the<br \/>\nfactory location(s) without additional modi\ufb01 cation or changes. Sub-<br \/>\nframe position may not be changed. The amount of metal in a re-<br \/>\nplacement bushing may not be increased relative to the amount of<br \/>\nmetal found in a standard bushing for the particular application. Solid<br \/>\nmetal bushings are speci\ufb01 cally prohibited.<br \/>\n14.9 ELECTRICAL SYSTEM<br \/>\nA. The make, model number, and size of the battery may be changed<br \/>\nbut not its voltage. Relocation of the battery or batteries is permitted<br \/>\nbut not into the passenger compartment. If the battery is relocated<br \/>\nand the original battery tray can be removed by simply unbolting it,<br \/>\nthe tray may be removed, or relocated with the battery. Holes may<br \/>\nbe drilled for mounting or passage of cables. Longer cables may be<br \/>\nsubstituted to permit relocation. The number of battery or batteries<br \/>\nmay not be changed from stock. The area behind the rearmost seat<br \/>\nis not considered to be within the passenger compartment. The area<br \/>\nunder the rearmost seat is considered to be within the passenger<br \/>\ncompartment.<br \/>\nB. The addition of electrical grounding cables and associated distribu-<br \/>\ntion blocks\/terminals is permitted. Holes may be drilled for mounting<br \/>\nonly. This does not permit the use of electrical enhancement compo-<br \/>\nnents such as condensers, voltage controllers, etc.<br \/>\n14.10 ENGINE AND DRIVETRAIN<br \/>\nEngine and transmission must remain unmodi\ufb01 ed, including emissions<br \/>\nequipment, except as noted below. All emissions monitoring system<br \/>\nhardware and software must be operationally functional as originally<br \/>\nintended by the manufacturer. Tampering with emissions system soft-<br \/>\nware and\/or hardware to create or cloak non-compliance is not permit-<br \/>\nted. Some examples of emissions system tampering are O2 foolers,<br \/>\ndisabling or deactivating Check Engine Light (CEL) code indication,<br \/>\nbackdating ECU internals from OBD2 to OBD1, etc.<br \/>\nA. Internal baf\ufb02 ing of oil pans may be added or modi\ufb01 ed. Addition or<br \/>\nmodi\ufb01 cation of windage trays, crankshaft scrapers, and oil pump<br \/>\npickups is not allowed.<br \/>\nB. Original equipment traction control systems may be electrically dis-<br \/>\nabled, but not removed or altered in any other way.<br \/>\nC. The air intake system up to, but not including, the engine inlet may be<br \/>\nmodi\ufb01 ed or replaced. The engine inlet is the throttle body, carbure-<br \/>\ntor, compressor inlet, or intake manifold, whichever comes \ufb01 rst. The<br \/>\nexisting structure of the car may not be modi\ufb01 ed for the passage of<br \/>\nducting from the air cleaner to the engine inlet. Holes may be drilled<br \/>\nfor mounting. Emissions or engine management components in the<br \/>\nair intake system, such as a PCV valve, or mass air\ufb02 ow sensor, may<br \/>\nnot be removed, modi\ufb01 ed, or replaced, and must retain their original<br \/>\nfunction along the \ufb02 ow path.<br \/>\nD. Exhaust manifolds and headers (including downpipes) may be re-<br \/>\nplaced with alternate units which are emissions-legal. Relocation of<br \/>\nthe oxygen sensor on the header is permitted. Alternate oxygen sen-<br \/>\nsors, including heated types, are permitted. This allowance does not<br \/>\npermit relocation of the catalytic converter (see 13.10.E). Exhaust<br \/>\nheat shields which cover only (and attach solely to) the header\/mani-<br \/>\nfold\/downpipe are considered part of that component and may be re-<br \/>\nplaced, removed, or modi\ufb01 ed. All other exhaust heat shields may be<br \/>\nmodi\ufb01 ed the minimum amount necessary to accommodate allowed<br \/>\nalternate exhaust components.<br \/>\nE. Catalytic Converters<br \/>\nST, STS, STR \u2013 Catalytic converters may be replaced by aftermarket<br \/>\nunits. Replacements must:<br \/>\n1) Be certi\ufb01 ed for use in that vehicle application by the manufac-<br \/>\nturer or reconditioner,<br \/>\n2) Bear correct EPA-mandated labeling,<br \/>\n3) Be of the OE quantity and type (i.e. oxidation, three-way, etc.)<br \/>\nand<br \/>\n4) Be used in the same location(s), relative to the chassis, as the<br \/>\nOE converter(s).<br \/>\nThis does allow for high performance replacements, provided they<br \/>\nmeet all restrictions herein.<br \/>\nSTX, STU \u2013 Any high \ufb02 ow catalytic converter(s) are allowed, but<br \/>\nmust attach within six inches of the original unit. Multiple catalytic<br \/>\nconverters may be replaced by a single unit. The inlet of the sin-<br \/>\ngle replacement converter may be located no further downstream<br \/>\nthan 6\u201d along the piping \ufb02 ow path from the original exit of the \ufb01 nal<br \/>\nOE converter.<br \/>\nF. The engine management system parameters and operation may be<br \/>\nmodi\ufb01 ed only via the methods listed below. Any and all modi\ufb01 cations<br \/>\nmust meet or exceed the applicable EPA tailpipe emissions stan-<br \/>\ndards for the year, make, and model of the car. These allowances<br \/>\nalso apply to forced induction cars, except that no changes to stan-<br \/>\ndard boost levels, intercoolers, or boost controls are permitted. Boost<br \/>\nchanges indirectly resulting from allowed modi\ufb01 cations are permis-<br \/>\nsible, but directly altering or modifying the boost or turbo controls,<br \/>\neither mechanically or electronically, is strictly prohibited.<br \/>\n1. Reprogrammed ECU (via hardware and\/or software) may be used<br \/>\nin the standard housing. Traction control parameters may not be<br \/>\naltered. Altered engine controllers may not alter boost levels in<br \/>\nforced induction engines. Alternate software maps which violate<br \/>\nthese restrictions may not be present during competition, regard-<br \/>\nless of activation.<br \/>\n2. Electronic components may be installed in-line between an en-<br \/>\ngine\u2019s sensors and ECU. These components may alter the signal<br \/>\ncoming from the sensor in order to affect the ECU\u2019s operation of<br \/>\nengine management system. Example: fuel controllers that modify<br \/>\nthe signal coming from an air\ufb02 ow sensor.<br \/>\n3. Fuel pressure regulators may be replaced in lieu of electronic al-<br \/>\nterations to the fuel system. It is not permitted to electronically<br \/>\nmodify the fuel system AND replace a fuel pressure regulator.<br \/>\n4. Ignition timing may be set at any point on factory adjustable dis-<br \/>\ntributor ignition systems.<br \/>\n5. VTEC controllers and other devices may be used which alter the<br \/>\ntiming of factory standard electronic variable valve timing sys-<br \/>\ntems.<br \/>\n6. All vehicles must comply with the EPA tailpipe emissions test re-<br \/>\nquirements as a minimum.<br \/>\nG. Any mechanical shift linkage may be used.<br \/>\nH. Any accessory pulleys and belts of the same type (e.g., V-belt, ser-<br \/>\npentine) as standard may be used. This allowance applies to ac-<br \/>\ncessory pulleys only (e.g., alternator, water pump, power steering<br \/>\npump, and crankshaft drive pulleys). It does not allow replacement,<br \/>\nmodi\ufb01 cation, or substitution of pulleys, cogs, gears, or belts which<br \/>\nare part of cam, layshaft, or ignition drive or timing systems, etc.<br \/>\nAny crankshaft damper or pulley may be used. SFI-rated dampers<br \/>\nare recommended. Supercharged cars may not change the effective<br \/>\ndiameter of any pulley which drives the supercharger.<br \/>\nI. Upper engine shields made of plastic material, the purpose of which is<br \/>\nto hide mechanical components in the engine compartment, may be<br \/>\nremoved if they have a solely aesthetic and\/or acoustic function.<br \/>\nJ. Engine mounts may be replaced, but must attach in the factory<br \/>\nlocation(s) without additional modi\ufb01 cation or changes. Engine po-<br \/>\nsition may not be changed. The volume of metal in a replacement<br \/>\nmount may not be increased relative to the volume of metal found<br \/>\nin a stock mount for the particular application. Solid metal mounts<br \/>\nare speci\ufb01 cally prohibited. Any non-metallic inserts may be used.<br \/>\nAll components between the engine and the mounting structure are<br \/>\nconsidered to be part of the motor mount assembly and therefore<br \/>\ncomprise the motor mount.<br \/>\nHydraulic shock type rear engine locators, or bobble struts may be<br \/>\nreplaced by manufacturer\u2019s performance part, or aftermarket replace-<br \/>\nment part. This part must retain factory dimensions and attachment<br \/>\npoints, including factory design. (Example: If factory locator\/bobble<br \/>\nstrut is gas or hydraulic piston type, replacement part must be gas or<br \/>\nhydraulic piston type. No solid mounts may be substituted.)<br \/>\nK. Limited Slip Differentials<br \/>\nST, STS \u2013 No limited slip differentials are permitted except for factory<br \/>\nstandard viscous coupler type units.<br \/>\nSTX, STU, STR \u2013 Only standard (as de\ufb01 ned in Section 12.4) limited<br \/>\nslip differentials (LSD) are allowed on AWD vehicles. For AWD<br \/>\nvehicles that did not come with any type of limited slip differential<br \/>\n(including center differential or transfer case), a single aftermarket<br \/>\nLSD may be added. 2WD vehicles may use any LSD unit.<br \/>\n14.11 OUT OF PRODUCTION CARS<br \/>\nWhere a car is out of production and the manufacturer is either out of<br \/>\nbusiness, stocks no parts or no longer has a required part, a part of any<br \/>\norigin but as similar as possible to the original may be substituted. The<br \/>\nentrant must be prepared to show documentary evidence that one of<br \/>\nthe three circumstances above applies and that the substituted part is<br \/>\nas similar as possible under the circumstances. Substitute parts which<br \/>\nprovide improvements in performance (e.g. superior gearing, lighter<br \/>\nweight, better camshaft pro\ufb01 le, etc.) are not permitted under this allow-<br \/>\nance.<\/p>\n<p>######################################################<\/p>\n<p>And the Stock rules. \u00a0Everything I can do here I can also do in ST, but there are some additional restrictions in ST around tires in that I must run 140+treadwear tires as opposed to just DOT stamped tires in Stock.<\/p>\n<p>13. STOCK CATEGORY<br \/>\nCars running in Stock Category must have been series produced with<br \/>\nnormal road touring equipment capable of being licensed for normal<br \/>\nroad use in the United States, and normally sold and delivered through<br \/>\nthe manufacturer\u2019s retail sales outlets in the United States. Car models<br \/>\nnot speci\ufb01 cally listed in any Stock Category class must have been pro-<br \/>\nduced, and must meet the above requirements and been sold through<br \/>\nnormal U.S. dealerships, in quantities of at least 1,000 in a 12-month<br \/>\nperiod in order to be eligible for the Stock Category. A Canadian-market<br \/>\nvehicle is eligible for Stock category if it is identical to the US-market<br \/>\ncounterpart except for comfort and convenience modi\ufb01 cations as al-<br \/>\nlowed per 13.2.A.<br \/>\nA car will remain eligible for Divisional, National Tour, and National<br \/>\nChampionship events through the end of the 30th calendar year after<br \/>\nthe manufacturer-designated model year of the car. This eligibility limi-<br \/>\ntation applies only to the Stock classes.<br \/>\nExcept for modi\ufb01 cations authorized below, Stock Category cars must<br \/>\nbe run as speci\ufb01 ed by the factory with only standard equipment as de-<br \/>\n\ufb01 ned by these Rules. This requirement refers not just to individual parts,<br \/>\nbut to combinations thereof which would have been ordered together<br \/>\non a speci\ufb01 c car. Any other modi\ufb01 cations or equipment will place the car<br \/>\nin Street Touring, Street Prepared, Street Modi\ufb01 ed, Prepared or Modi-<br \/>\n\ufb01 ed Categories as appropriate. Con\ufb01 gurations involving damaged parts<br \/>\n(e.g., blown fuses) are not typically authorized by the manufacturer and<br \/>\nhence are not allowed.<br \/>\nOption package conversions may be performed between speci\ufb01 c ve-<br \/>\nhicles of a particular make and model, but only between con\ufb01 gurations<br \/>\nfrom within a particular model year. Such conversions must be totally<br \/>\ncomplete and the resultant car must meet all requirements of this Sec-<br \/>\ntion. These requirements are not met by simply pulling a fuse to disable<br \/>\na feature which distinguishes one model from another.<br \/>\nAlternate parts listed in a factory parts manual are not authorized un-<br \/>\nless their use is speci\ufb01 cally referenced in the factory service manual or<br \/>\nin a service bulletin for the speci\ufb01 c model.<br \/>\nSee Sections 3.8 and 8.3.1 for documentation requirements.<br \/>\nAlternate components which are normally expendable and considered<br \/>\nreplacement parts (e.g., engine and wheel bearings, seals, gaskets,<br \/>\n\ufb01 lters, belts, bolts, bulbs, batteries, brake rotors, clutch discs, pressure<br \/>\nplates, suspension bushings, drivetrain mounts, etc.) may be used pro-<br \/>\nvided they are essentially identical to the standard parts (e.g. have the<br \/>\nsame type, size, hardness, weight, material etc.), are used in the same<br \/>\nlocation, and provide no performance bene\ufb01 t. The allowance for use of<br \/>\nsuch replacements does not include camshafts, differential covers, or<br \/>\nring-and-pinion sets, nor does it authorize the use of piston rings having<br \/>\ndifferent con\ufb01 gurations (e.g. \u201cTotal Seal\u201d) from those of the original.<br \/>\nHardware items (nuts, bolts, etc.) may be replaced by similar items of<br \/>\nunrestricted origin. Safety wire, threadlocker compounds, and locking<br \/>\nnuts are permitted. These allowances are strictly to allow components<br \/>\nto be replaced from alternate sources other than the original manufac-<br \/>\nturer. They should not be construed as an allowance to replace com-<br \/>\nponents with those which could be considered a \u201dhigher performance\u201d<br \/>\nalternative. Parts available as replacements through the dealers parts<br \/>\ndepartment, the factory, or any other source which do not meet stan-<br \/>\ndard part speci\ufb01 cations (e.g., hardness, size, etc.) are not legal in Stock<br \/>\nCategory, except as speci\ufb01 cally provided elsewhere in these rules.<br \/>\nCars listed as eligible in and prepared to the current national Showroom<br \/>\nStock Club Racing rules are permitted to compete in their respective<br \/>\nSolo Stock Classes. This does not include Showroom Stock cars with<br \/>\ninstallations of post-factory \u201cperformance packages\u201d otherwise known<br \/>\nas \u201ctrunk kits.\u201d Neither Showroom Stock nor Solo Stock cars are per-<br \/>\nmitted to interchange preparation rules. Showroom Stock cars may use<br \/>\ntires which are eligible under current SS rules, even if they are not eli-<br \/>\ngible in Stock.<br \/>\nSpeci\ufb01 c vehicle classi\ufb01 cations are located in Appendix A of these<br \/>\nrules.<br \/>\n13.1 AUTHORIZED MODIFICATIONS<br \/>\nIf a modi\ufb01 cation is not speci\ufb01 cally authorized in this or previous sections<br \/>\nof these Rules, it is not allowed.<br \/>\nThe addition of small holes for attachment hardware for authorized<br \/>\nmodi\ufb01 cations is implicit (e.g., holes for fasteners to mount additional<br \/>\ngauges, holes for brackets to mount shock absorber remote reservoirs,<br \/>\netc.). However, these holes may serve no other purpose.<br \/>\nAll repairs must comply with factory-authorized methods and proce-<br \/>\ndures.<br \/>\nIt is not permitted to use illegal parts even if they have been set to Stock<br \/>\nspeci\ufb01 cations.<br \/>\nRefer to Appendix F for past clari\ufb01 cations of these rules.<br \/>\n13.2 BODYWORK<br \/>\nA. Accessories, gauges, indicators, lights and other appearance, com-<br \/>\nfort and convenience modi\ufb01 cations which have no effect on perfor-<br \/>\nmance and\/or handling and do not materially reduce the weight of<br \/>\nthe car are permitted. This does not allow driver\u2019s seat substitutions,<br \/>\nor the removal of \u201ctow hooks\u201d, a.k.a. \u201ctie-down loops\u201d. Delayed shut-<br \/>\ndown devices such as the \u201cTurbo Timer\u201d, which perform no function<br \/>\nwhile the car is in motion, are permitted. This does permit the instal-<br \/>\nlation of an additional mirror (e.g. a \u201cWink\u201d), but does not allow the<br \/>\nremoval of the original mirror. \u201cGrounding kits\u201d speci\ufb01 cally designed<br \/>\nto support sound systems are permitted but may serve no other pur-<br \/>\npose.<br \/>\nB. Data acquisition systems (including video cameras) and the accom-<br \/>\npanying sensors are allowed but may serve no purpose during the<br \/>\nrun other than real-time display and data recording.<br \/>\nC. Hood straps or fasteners may be added.<br \/>\nD. Any fuel tank cap may be used.<br \/>\nE. Windshields may be folded (but not removed) provided the required<br \/>\nmechanism is standard equipment.<br \/>\nF. Alternate steering wheels are allowed, provided the outside diameter<br \/>\nis not changed by more than one inch from the standard size. Steer-<br \/>\ning wheels with an integral airbag may not be changed.<br \/>\nG. Spare tires, tools and jacks may be removed. Any fastening hard-<br \/>\nware and\/or other pieces that can no longer be \ufb01 rmly secured in the<br \/>\nabsence of the spare tire may be removed if necessary to ensure<br \/>\ncompliance with 3.3.3.B.1.<br \/>\nH. Roll bars and roll cages may be added (See Appendix C). This allow-<br \/>\nance does not permit the removal of standard roll hoops. It is strongly<br \/>\nrecommended that roll cages be constructed according to the GCR,<br \/>\nthough they must be bolted (not welded) into the automobile and be<br \/>\ncontained within the driver\/passenger compartment. Roll bars may<br \/>\nbe welded in. A roll cage has more than four attachment points to the<br \/>\nbody or frame, or has bracing both fore and aft of the main hoop.<br \/>\nI. Driver restraints as outlined in Section 3.3.1 are allowed. Seats may<br \/>\nnot be cut to allow for the installation of alternate seat belts or har-<br \/>\nnesses. Passive restraint systems may not be removed. A horizontal<br \/>\n\u201charness bar\u201d may be used as part of the installation hardware for al-<br \/>\nlowed driver restraints provided it has no more than two attachment<br \/>\npoints and is bolted at those locations. A \u2018C\u2019-type harness bar may<br \/>\nalso be used. It may have four bolted attachment points (two primary,<br \/>\nand two supporting connections to resist rotation).<br \/>\nJ. Cars may add one rear trailer hitch. The resulting weight addition is<br \/>\nallowed. The hitch may serve no other purpose. Factory tie downs<br \/>\nand cosmetic pieces (e.g. diffusers) may be modi\ufb01 ed or removed to<br \/>\nfacilitate hitch installation. Complete or partial removal of the hitch is<br \/>\nallowed for competition, provided it does not result in a reduction in<br \/>\nweight compared to the unmodi\ufb01 ed standard con\ufb01 guration.<br \/>\nK. Tow bar brackets may be installed but may serve no other purpose.<br \/>\nL. Any item that cannot be held permanently in place by factory-installed<br \/>\nfasteners may be removed.<br \/>\n13.3 TIRES<br \/>\nAny tire which is OE on a car eligible for Stock Category may be used.<br \/>\nNon-OE tires must meet the following requirements to be eligible for<br \/>\nuse in Stock category:<br \/>\nA. The tire must not appear on the following list, which may be altered<br \/>\nat any time by the SEB upon noti\ufb01 cation of membership.<br \/>\nNo tire models are currently listed.<br \/>\nB. No tire models will be approved for competition during the rest of<br \/>\nthe year after April 30 of each calendar year. Each eligible tire model<br \/>\nmust meet all requirements of Section 13.3 by April 30, and must<br \/>\ncontinue to meet them thereafter. A tire model will normally be deter-<br \/>\nmined by the designation in the Tire Guide.<br \/>\nHowever, any of the following changes or similar changes (as deter-<br \/>\nmined by the SEB) will also be considered to represent a new mod-<br \/>\nel for eligibility purposes, even if the designation does not change:<br \/>\nchange of tread pattern at either full or partial tread depth; charac-<br \/>\nterization by the manufacturer or distributor of a tire as \u201cnew\u201d after<br \/>\nApril 30.<br \/>\nA tire model which was previously allowed by these rules continues<br \/>\nto be legal until speci\ufb01 cally disallowed. This follows years of prece-<br \/>\ndence on eligibility for discontinued tire models.<br \/>\nIf a manufacturer reintroduces a tire model which was previously<br \/>\ndiscontinued, that tire will be considered a new model. Therefore,<br \/>\nit will have to meet the rules speci\ufb01 ed in Section 13.3 including the<br \/>\nApril 30 introduction date.<br \/>\nC. The model of tire must be listed in a current or previous two years of<br \/>\nthe \u201cTire Guide\u201d and \u201cTread Design Guide\u201d or otherwise be approved<br \/>\nby the SEB. The tire model must have Department of Transportation<br \/>\n(DOT) approval.<br \/>\nD. Within each tire model, the sizes which are available must be equally<br \/>\navailable to all competitors. Tire model variations differing from stan-<br \/>\ndard speci\ufb01 cation, delivered only on a limited basis, or only to se-<br \/>\nlected competitors, may not be used.<br \/>\nE. No racing tire or recap (on any casing) may be used. Siping or re-<br \/>\ngrooving of tires is not permitted.<br \/>\nF. Each tire model must be sold in at least four rim diameters with a total<br \/>\nof at least six sizes.<br \/>\nG. Tire must \ufb01 t the allowable wheels and fender wells without modi\ufb01 ca-<br \/>\ntion.<br \/>\nH. Each tire must have non-zero measurable tread depth (i.e., points<br \/>\nwhere it is possible to obtain positive measurement values) as de-<br \/>\nscribed in Section 3.3.3.B. Tires may not have cord visible at any<br \/>\ntime during competition.<br \/>\n13.4 WHEELS<br \/>\nAny type wheel may be used provided it complies with the following: it<br \/>\nis the same width and diameter as standard, and as installed (includ-<br \/>\ning wheel spacers if applicable) it does not have an offset more than<br \/>\n+\/- 0.25 inch from a standard wheel for the car. The resultant change in<br \/>\ntrack dimensions is allowed.<br \/>\nWheel spacers are permitted, provided the resultant combination com-<br \/>\nplies with the offset requirements of this section. Wheel studs, lug nuts,<br \/>\nand\/or bolt length may be changed.<br \/>\nVehicles equipped with rims having metric speci\ufb01 cations may use alter-<br \/>\nnate rims as determined by using the following procedure:<br \/>\nDiameter: converting the metric measurement to inches and using<br \/>\nthe nearest smaller inch diameter rim.<br \/>\nWidth: converting the metric measurement to inches and using the<br \/>\nnearest smaller 1\/2-inch width rim. Offset and track must still com-<br \/>\nply with the requirements of this section.<br \/>\n13.5 SHOCK ABSORBERS<br \/>\nA. The make of shock absorbers, struts, and strut housings may be<br \/>\nsubstituted providing that the number, type (e.g., tube, lever, etc.),<br \/>\nsystem of attachment and attachment points are not altered, except<br \/>\nas noted below. The interchange of gas and hydraulic shocks ab-<br \/>\nsorbers is permitted. The following restrictions apply:<br \/>\n1. No more than two separate external shock damping adjustment<br \/>\ncontrols are allowed. This permits the use of shocks which origi-<br \/>\nnally came with more than two external adjustments, which have<br \/>\nbeen converted to double-adjustables, only if the additional ad-<br \/>\njustment controls have been permanently disabled (e.g. via weld-<br \/>\ning, epoxying, grinding off). Gas pressure adjustment is not con-<br \/>\nsidered a damping adjustment.<br \/>\n2. Suspension geometry and alignment capability, not including ride<br \/>\nheight, may not be altered by the substitution of alternate shock<br \/>\nabsorbers. Aftermarket strut housings are allowed provided that<br \/>\nthey meet the Stock category shock requirements de\ufb01 ned herein,<br \/>\ni.e. that no suspension geometry changes result. This includes the<br \/>\nposition of the steering arm attachment point in the case of struts<br \/>\nwith integrated steering arms.<br \/>\n3. Adjustable spring perches are allowed, but the spring loadbearing<br \/>\nsurface must be in the same location relative to the shock mount-<br \/>\ning points as on the standard part. Shims may be used to achieve<br \/>\ncompliance.<br \/>\n4. The fully extended length must be within plus or minus one inch of<br \/>\nthe dimension of the standard part.<br \/>\n5. Electronically controlled shocks may not be used on vehicles not<br \/>\noriginally equipped with such units. Vehicles originally equipped<br \/>\nwith electronically controlled shocks may use the standard parts<br \/>\nor non-electronically controlled alternative shocks subject to all<br \/>\nthe requirements of 13.5. Non-standard electronically-controlled<br \/>\nshocks are not allowed.<br \/>\nB. The mounting hardware shall be of the original type. The use of<br \/>\nany shock absorber bushing material, including metal, is permitted.<br \/>\nPressed or bonded bushings may be removed from standard parts<br \/>\nto facilitate the use of alternate bushings which \ufb01 t in the original loca-<br \/>\ntion without alterations to the part. This does not permit the use of<br \/>\nan offset shock bushing. A shock absorber bushing may be imple-<br \/>\nmented as a spherical bearing. The bushing attaching the end of a<br \/>\nstrut to the body or frame on a strut type suspension is a suspension<br \/>\nbushing, not a shock bushing.<br \/>\nFor cars with a bayonet\/shaft-type upper shock mount, this allowance<br \/>\npermits the removal of the shock bushing from the upper mounting<br \/>\nplate (e.g. via drilling, cutting, burning out the bushing) and replacing<br \/>\nit with another bushing. This also includes shock bushings located in<br \/>\ncontrol arms, etc. This does not allow other modi\ufb01 cations to the plate<br \/>\nitself or use of an alternate plate.<br \/>\nC. To facilitate the installation of commonly available aftermarket shock<br \/>\nabsorbers, struts, or strut inserts whose shaft size is larger than the<br \/>\ncenter hole of an upper shock mount assembly, that hole may be en-<br \/>\nlarged by the minimum necessary to accommodate the shock shaft<br \/>\nsize, provided the following restrictions are met:<br \/>\n(1) the enlarged hole must remain concentric with the original con-<br \/>\n\ufb01 guration;<br \/>\n(2) the enlargement of the hole does not require modi\ufb01 cation of a<br \/>\nbearing (as opposed to a washer, sleeve, or plate);<br \/>\n(3) neither the hole enlargement nor the location of the shock shaft<br \/>\nchanges any alignment parameter. Provided these constraints are<br \/>\nmet, this permits enlarging of the center hole in an upper shock<br \/>\nmount with an integrated rubber bushing, where the bushing is<br \/>\nintegral to the mount and bonded to the plate and the mount is<br \/>\nprovided by the OEM as an assembly. This includes drilling out<br \/>\nand\/or removal of the metal sleeve.<br \/>\nD. A suspension bump stop is considered to be performing the function<br \/>\nof a spring. Therefore, the compressed length of the shock at the<br \/>\ninitial point of contact with the bump stop may not be increased from<br \/>\nthe standard part, although the bump stop may be shortened for the<br \/>\npurpose of installing non-standard shocks. Bump stops installed ex-<br \/>\nternally and concentric with the shaft of a shock may be drilled out to<br \/>\n\ufb01 t a larger diameter shock shaft. Bump stops may be substituted for<br \/>\nthe purposes of installing non-standard shocks.<br \/>\nE. A hole may be added through the bodywork to route the reservoir<br \/>\nand hose to a remote mounting location. Such holes may serve no<br \/>\nother purpose.<br \/>\nF. A hole may be added to an interior body panel to provide access<br \/>\nto the adjustment mechanism on an allowed adjustable shock ab-<br \/>\nsorber. The hole may serve no other purpose, and may not be added<br \/>\nthrough either the exterior bodywork or a strut bar. Interior panels<br \/>\nare de\ufb01 ned to be those pieces which cover the interior of the vehicle<br \/>\n(including the trunk area) and are accessible from inside the vehicle.<br \/>\nThey do not include structural panels, such as wheel wells or inner<br \/>\nfenders, which may also be accessible from inside the car but which<br \/>\nactually form part of the body of the vehicle.<br \/>\n13.6 BRAKES<br \/>\nA. The make and material of brake linings may be changed.<br \/>\nB. Substitution of clutch and brake hydraulic lines with solid metal or<br \/>\nbraided metal is allowed on all cars manufactured before model year<br \/>\n1992.<br \/>\nC. Alternate brake bleeder \ufb01 ttings, such as \u201cSpeedbleeders,\u201d are per-<br \/>\nmitted. They may serve no other purpose.<br \/>\n13.7 ANTI-ROLL (SWAY) BARS<br \/>\nA. For front anti-roll bars:<br \/>\n1. Substitution, addition, or removal of any front anti-roll bar(s) and<br \/>\nsupporting hardware (brackets, endlinks, bushings, etc.) is permit-<br \/>\nted.<br \/>\n2. Substitution, addition, or removal of anti-roll bars may serve no<br \/>\nother purpose than that of an anti-roll bar.<br \/>\n3. The use of any bushing material is permitted.<br \/>\n4. No modi\ufb01 cation to the body, frame, or other components to ac-<br \/>\ncommodate anti-roll bar addition or substitution is allowed except<br \/>\nfor the drilling of holes for mounting bolts. Non-standard lateral<br \/>\nmembers which connect between the brackets for the bar are not<br \/>\npermitted.<br \/>\nB. Rear anti-roll bars may not be removed, replaced, or modi\ufb01 ed in any<br \/>\nway.<br \/>\n13.8 SUSPENSION<br \/>\nA. Standard, as de\ufb01 ned herein, suspension springs must be used. They<br \/>\nmay not be cut, shortened, or collapsed. Cars with swing axle sus-<br \/>\npension may be lowered suf\ufb01 ciently to achieve no more than two<br \/>\ndegrees of negative camber at rest and may use a camber compen-<br \/>\nsator. Spring perches may not vary from the OE shape within the<br \/>\nworking part of the perch.<br \/>\nB. Both the front and rear suspension may be adjusted through their<br \/>\ndesigned range of adjustment by use of factory adjustment arrange-<br \/>\nments or by taking advantage of inherent manufacturing tolerances.<br \/>\nThis encompasses both alignment and ride height parameters if such<br \/>\nadjustments are provided by the stock components and speci\ufb01 ed by<br \/>\nthe factory as normal methods of adjustment. However, no suspen-<br \/>\nsion part may be modi\ufb01 ed for the purpose of adjustment unless such<br \/>\nmodi\ufb01 cation is speci\ufb01 cally authorized by the factory shop manual for<br \/>\nnon-competition purposes.<br \/>\nC. Suspension bushings, including but not limited to those which carry<br \/>\nthe weight of the vehicle and determine ride height, may not be re-<br \/>\nplaced with bushings of a different material or dimension.<br \/>\nD. Replacement control arms for vehicles having integral bushing\/arm<br \/>\nassemblies must be standard factory parts as per Sections 12.4 and<br \/>\n13.0.<br \/>\nE. If authorized by the manufacturer, the use of shims, special bolts,<br \/>\nremoval of material to enlarge mounting holes, and similar meth-<br \/>\nods are allowed and the resulting alignment settings are permitted<br \/>\neven if outside the normal speci\ufb01 cation or range of speci\ufb01 cations<br \/>\nrecommended by the manufacturer. If enlarging mounting holes is<br \/>\nspeci\ufb01 cally authorized but no material removal limits are speci\ufb01 ed,<br \/>\nmaterial removal is restricted to the amount necessary to achieve the<br \/>\nmaximum factory alignment speci\ufb01 cation.<br \/>\n13.9 ELECTRICAL SYSTEM<br \/>\nA. The make of spark plugs, points, ignition coil and high tension wires<br \/>\nis unrestricted including spark plug wires having an in-line capacitor.<br \/>\n(Modi\ufb01 cation of the distributor cap for the purpose of installing al-<br \/>\nlowed non-standard components is not permitted.)<br \/>\nB. On cars made prior to January 1, 1968, any ignition system using a<br \/>\nstandard distributor without modi\ufb01 cation may be used.<br \/>\nC. Ignition settings may not be adjusted outside factory speci\ufb01 cations.<br \/>\nD. No changes are permitted to electronic engine management sys-<br \/>\ntems or their programming.<br \/>\nE. Additional battery hold-down hardware may be added to supplement<br \/>\nthe standard equipment in order to meet 3.3.3.B.15. It may serve no<br \/>\nother purpose.<br \/>\n13.10 ENGINE AND DRIVE TRAIN<br \/>\nA. The engine air \ufb01 lter element may be removed or replaced. A replace-<br \/>\nment element, which is taller than standard, may not be used to hold<br \/>\nthe air cleaner cover open. No other components of the air induction<br \/>\nsystem may be removed, replaced, or modi\ufb01 ed.<br \/>\nB. Engines may be rebored to the manufacturer\u2019s \ufb01 rst standard over-<br \/>\nbore, not to exceed 0.020\u201d. Sleeving is allowed to repair to the stan-<br \/>\ndard bore. Only OE-type standard or \ufb01 rst overbore pistons of the<br \/>\nsame con\ufb01 guration and of the same or greater weights are permit-<br \/>\nted. No interchange between cast and forged pistons is allowed.<br \/>\nC. Rotating and reciprocating parts may not be balanced.<br \/>\nD. Port matching is not allowed.<br \/>\nE. Any part of the exhaust system beyond (downstream from) the head-<br \/>\ner\/manifold or catalytic converter, if so equipped, may be substituted<br \/>\nor removed provided the system meets the requirements of 3.5 and<br \/>\n3.3.3.B.15. Stainless steel heat exchangers are permitted only if the<br \/>\nphysical dimensions and con\ufb01 guration remain unchanged.<br \/>\nModi\ufb01 cations of any type, including additions to or removal of, the<br \/>\ncatalytic converters, thermal reactors, or any other pollution control<br \/>\ndevices in the exhaust system are not allowed and the system must<br \/>\nbe operable. Replacement catalytic converters must be OE if the<br \/>\nvehicle has not exceeded the warranty period as mandated by the<br \/>\nEPA. Converters must be of the same type and size and used in the<br \/>\nsame location as the original equipment converter(s). This does not<br \/>\nallow for a high performance unit. If the vehicle has exceeded the<br \/>\nwarranty period, replacement catalytic converters must be OE-type<br \/>\nas per Section 13.0.<br \/>\nExhaust hangers which are bolted or welded on the car are consid-<br \/>\nered part of the body and may not be changed or removed.<br \/>\nF. Any oil \ufb01 lter may be added if not originally equipped. Canister-type<br \/>\noil \ufb01 lters may be replaced with a spin-on type \ufb01 lter using a minimum<br \/>\namount of hardware and connecting lines.<br \/>\nG. The installation of water expansion tanks is allowed. The installation<br \/>\nof oil catch tanks is allowed provided the PCV system is not altered.<br \/>\nH. A scattershield may be added. This does not permit bell housing<br \/>\nsubstitutions.<br \/>\nI. Thermostats may be added or substituted. A thermostat is a device<br \/>\nwhich controls the passage of water.<br \/>\nJ. Silicone replacement hoses are permitted as alternate components<br \/>\nprovided they meet the requirements of Section 13.0 with regard to<br \/>\nsize, shape, location, and performance equivalence. Replacement<br \/>\ninduction system air intake hoses must also match the standard part<br \/>\nin stiffness, contour, and internal wall texture.<br \/>\nK. A device for locking out reverse gear may be used.<br \/>\nL. Limited-slip differential, transmission and differential ratios, clutch<br \/>\nmechanisms and carburetion, fuel injection or supercharger induc-<br \/>\ntion systems must be standard as herein de\ufb01 ned.<br \/>\nM. Any oil or grease, including synthetic, is permitted.<br \/>\nN. Valve seats and guides in older engines originally designed for lead-<br \/>\ned fuel may be only substituted with alternate components if the di-<br \/>\nmensions are the same as those of the standard components.<br \/>\nO. Electronic traction and\/or stability control systems may be turned off<br \/>\nor disabled, as long as this does not require connection to an exter-<br \/>\nnal system, removal of any part, or the substitution or modi\ufb01 cation<br \/>\nof any part.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Below are the applicable rules that define this build, excerpted from the 2010 SCCA Solo rulebook. \u00a0It takes a bit of reading comprehension (a phrase I use here not sarcastically) to really get all of this. \u00a0For the amateur rulebook readers in the audience, the overriding thing to remember here is, &#8220;if it doesn&#8217;t say [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":2,"comment_status":"open","ping_status":"open","template":"","meta":[],"_links":{"self":[{"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=\/wp\/v2\/pages\/260"}],"collection":[{"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=260"}],"version-history":[{"count":2,"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=\/wp\/v2\/pages\/260\/revisions"}],"predecessor-version":[{"id":1371,"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=\/wp\/v2\/pages\/260\/revisions\/1371"}],"wp:attachment":[{"href":"http:\/\/www.rhoadescamaro.com\/build\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}