[Spridgets] 1972 SCCA PCS for Spridgets

[stanbmason at aol.com]

Vintage Spridget Race Peoples,
One of the items I have wanted to address ever since the Sprite Midget Race Series was started 8 years ago was an understanding of what regulations we were under within VSCDA Group 2 and also understand other organizations regulations as it relates to our favorite race car.  Part of that goal was to get a copy of 1972 SCCA Regulations that VSCDA's General Competition Rules Technical Requirements (revised 1/2018) states as their guideline.  I have gleaned from VSCDA's General Competition Rules Technical Requirements (1-4) and have highlighted below.  I would encourage everyone to be more familiar with this document found on the VSCDA Website https://www.vscda.org/vscda-general-competition-rules :
1 *  Cars must be presented in a neat and finished condition. Cars shall be preparedaccording to relevant SCCA or FIA General Competition Rules (GCR’s) in effect up to 5 years after the date of the car’s manufacture,but no later than December 31, 1972, except for Groups 5 & 7. Modifications beyond the era of a car’s production, made for otherthan safety reasons, may result in reclassification of Group. 
2 * Supplemental Rules and Regulations for “Race Groups and Specific Cars”:1. Race Groups 2 and 8 (Supplemental Rules)VSCDA has two types of preparation; PeriodsSCCAPreparation andModPreparation. Cars which are prepared to the more liberalrules of some VMC organizations are usually accommodated in one of the VSCDA Mod ClassesVSCDA also has provisions which allows some cars to be prepared to “other period regulations” as described in item 9 in thissection.To determine the minimum race weight for cars in Groups 2 and 8 look up the spec. weight in the table “GCR Car Specifications” onthe VSCDA website. Multiply this weight by the percentage below.Period SCCA Preparation 95%MOD – 1 90%MOD – 2 85%
3 * (you may want to pull up the actual table since the following did not copy and past into tables)PeriodSCCAPreparationRace Group 2 (Classes A through E)Race Group 8 (Classes B1, B2, C and X)This table covers some important SCCA period requirements which VSCDA expressly focuses attention on. Carsare also expected to meet all other SCCA period requirement unless expressly covered by exceptions listed inthis document in the VSCDA General Rules and Car Specific Exceptions Item 8.ITEM SCCASPORTSCARS SCCASEDANS(B,C,D)Source of Regulation SCCA 1967 General Competition RulesAppendix A/Article 1. Production CategorySports Cars (w/PCS sheets)And after review, 1972 and prior cars homologated tosimilar regulations published by FIA and some othersanctioning bodiesSCCA 1967 General Competition RulesAppendix A/Article 5 SCCA Sedans(w/Recognition Forms)And after review, 1972 and prior cars homologated tosimilar regulations published by FIA and some othersanctioning bodiesMINIMUM WEIGHT Weight on PCS, minus 5% tolerance Weight on Recognition Form, minus 5% toleranceDISPLACEMENT Maximum overbore 0.060”, standard stroke Maximum overbore 0.060”, standard strokeSUSPENSION Must be production rear axle assembly, suspensionmembers and mounting points.Shock absorbers must be production type (i.e. lever,telescopic), original number and attachment points. Remotereservoir shocks are not permitted.Coil over springs are not allowed unless originally used inproduction.Anti-sway bars, torque arms, panhard rods and other similaraxle locating devices free.Must be production rear axle assembly, suspensionmembers and mounting points.Shock absorbers must be production type (i.e. lever,telescopic), original number and attachment points.Remote reservoir shocks are not permitted.Coil over springs are not allowed unless originally used inproduction.Anti-sway bars, torque arms, panhard rods and othersimilar axle locating devices free.BRAKES Original production brakes must be used at the wheellocations. Dual master and servo systems may be added.Friction material and Alfin type brake drums are free.Original production brakes must be used at the wheellocations. Dual master and servo systems may be added.Friction material and Alfin type brake drums are free.INDUCTION SYSTEM The carburetors and manifold must be those originallysupplied by the manufacturer, including the make, model,and throat diameter. The jets, needles, seats and chokesmay be changed. Note: Other carburetors may be allowedin this Production Classes when period Homologation papersfor the make/model/year are presented at Tech.Fuel injection throttle bodies and nozzles must be the sameas originally supplied by the manufacturer. The make andmodel of the fuel metering and/or fuel distribution unitmust remain the same. The intake manifold cannot bemodified.The carburetors and manifold must be those originallysupplied by the manufacturer, including the make,model, and throat diameter. The jets, needles, seats andchokes may be changed. Note: Other carburetors maybe allowed in this Production Classes when periodHomologation papers for the make/model/year arepresented at Tech.Fuel injection throttle bodies and nozzles must be thesame as originally supplied by the manufacturer. Themake and model of the fuel metering and/or fueldistribution unit must remain the same. The intakemanifold cannot be modified.OTHER All other items of car preparation must meet the regularrules of VSCDA Car Preparation and period GCR.All other items of car preparation must meet the regularrules of VSCDA Car Preparation and period GCR.When these Rules differ in some way from period Regulations, the VSCDA Rules shall prevail. Cars prepared tothis specification can qualify for the Era (EC) Medallion by faithfully meeting all VSCDA rules.
4 *  (you may want to pull up the actual table since the following did not copy and past into tables)MODPreparationRace Group 2 (Classes MOD-1 and MOD-2)Race Group 8 (Classes MOD-1 and MOD-2)This table covers Mod-1 and Mod-2 exceptions to Period SCCA Preparation. AllotherpreparationitemsarethesameastheSCCAPeriodPreparation.ITEM RACEGROUPS2&8MOD-1RACEGROUPS2&8MOD-2Source of Regulation SCCA 1965 General Competition RulesFIA Appendix J. 274. Group 3, (b)SCCA 1965 General Competition RulesFIA Appendix J. 275. Group 4, (a) (b)MINIMUM WEIGHT Weight on PCS or Recognition form minus 10% Weight on PCS or Recognition form minus 15%DISPLACEMENT Maximum overbore 0.060”, standard stroke Maximum overbore 0.060”, standard strokeSUSPENSION Must be production rear axle assembly, suspensionmembers and mounting points.Rear lever type shocks may be changed to telescopic but thenumber of shocks may not change and remote reservoirshocks are not allowed.Coil over springs are not allowed unless originally used inproduction.Anti-sway bars, torque arms, panhard rods and other similaraxle locating devices free.Rear axle assembly may be changed to anothercomponent of a similar type which was in productionprior to 1973.Front/rear lever type shocks may be changed totelescopic but the number of shocks may not change andremote reservoir shocks are not allowed.Coil over springs are not allowed unless originally used inproduction.Anti-sway bars, torque arms, panhard rods and othersimilar axle locating devices free.BRAKES Brakes are free when mounted in the standard location andcomposed of components available before 1973. Discbrakes may replace drum brakes.Rotors that are drilled, slotted or ventilated are not allowedunless originally used in production.Aluminum calipers may not replace iron calipers unless thecaliper was available before 1973.Brakes are free when mounted in the standard locationand composed of components available before 1973.Disc brakes may replace drum brakes.Rotors that are drilled, slotted or ventilated are notallowed unless originally used in production.Aluminum calipers may not replace iron calipers unlessthe caliper was available before 1973.INDUCTION SYSTEM Original carburetors may be replaced as long as the samenumber of throats are maintained (example two SU’sreplaced with two larger SU’s or a Weber).Fuel injection throttle bodies must be the same type, samelocation and same duct dimensions. The number andlocation of the injection nozzles must be the same. Themake and model of the fuel metering and/or fueldistribution unit must remain the same. Material cannot beadded to the intake manifold.Original carburetors may be replaced with differentcarburetors and more throats. (example two SU’sreplaced with two Webers)Fuel injection throttle body dimensions may beincreased, but the type and location must be the same.The location of the injection nozzles, type of fuelmetering and distribution must remain the same.Material cannot be added to the intake manifoldextending into the head.OTHER All other items of Mod – 1 car preparation must meet theregular rules of VSCDA car preparation, except for thedifferences described above.All other items of Mod – 2 car preparation must meet theregular rules of VSCDA car preparation, except for thedifferences described above.When these Rules differ in some way from period regulations, the VSCDA Rules shall prevail. All MOD-1 andMod-2 class cars shall carry visible MODdecals on both sides of the car when racing. One set of decals willinitially be provided at VSCDA Tech. Subsequent decals will not normally be free of charge.
Attached is the 1972 SCCA Production Car Specification as it relates to Spridgets for Classifications and Specifications that I have recently copied for your reference.  I know there is lots of confusion about what is legal and what is not.  This attachment is only to highlight what VSCDA has established as it's baseline for our cars.  I am hoping to also be able to copy 1972 SCCA GCR for further verification of our VSCDA Guidelines.


 
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