NNJR Autocross Series 2012
Each driver must wear an “M” or “SA” rated helmet carrying a 2005 or later Snell Memorial Foundation approval sticker. For those purchasing a new helmet, a 2010 “SA” rated helmet is strongly recommended, but an “M” rated helmet is acceptable. Loaner helmets are available for new drivers.
All NNJR Autocross events are FULLY MUFFLED EVENTS. Any car having a noisy exhaust system will be rejected. This rule will be strictly enforced.
Metal-to-metal seat belts, securely anchored are required. 1965-68 “900 Series” cars must modify the outer seat belt anchors so that the belt crosses the pelvic bone and lower abdomen and down toward the anchor point as near to a 45 degree angle as possible.
Sneakers, tennis shoes or other rubber-soled shoes are recommended. High-heels, sandals and the like will not be allowed.
Roll Bars are recommended for all open cars.
Fire Extinguishers are not mandatory but recommended. For those cars equipped with fire extinguishers, the extinguisher must be a minimum of 2.5 pounds, BC or ABC rated and fully charged. It must be fastened to metal using metal brackets and fasteners, within reach of the driver while buckled in the driver’s seat.
Tire and wheel combinations must be completely covered by the bodywork and have sufficient clearance to prevent rubbing that could be considered to be dangerous.
You must retain a Porsche OEM engine block or case (except for X class).
All cars must pass an on-site safety inspection. All loose articles must be removed prior to the safety inspection. Having the car inspected is the responsibility of the driver. A car that has not been inspected will not be allowed to compete. Late inspections are at the convenience of the Tech Inspectors.
Cars / drivers not following the series rules will be subject to protest. Protests which are upheld may result in disqualification from the event, reclassification or other changes as determined by the event chairperson.
A driver may only enter one (1) car in an event.   A maximum of two (2) drivers are allowed per car.  Co-drivers of the same car will run in opposite heats.
In accordance with New Jersey law, absolutely no passengers are allowed at any time, except for pre-approved NNJR instructors.   If an instructor drives your car for a run, the time will not count, and you will receive a re-run.
All rules are the same for Rookie and Veteran classes, except for tires (see below).
New autocrossers with fewer than three (3) events of experience will have an instructor provided (mandatory) for their first run of the day.  Instruction is available for all participants throughout the event.
All drivers must have a work assignment at a flagging station or other duty assigned. Any driver who does not show up for their work assignment may not be allowed to drive, or may forfeit championship points, at the discretion of the event chairperson.
NO ALCOHOLIC BEVERAGES OF ANY TYPE MAY BE CONSUMED BY ANY PERSON DURING THE DRIVING EVENT. THE USE OF ANY ILLEGAL OR REFLEX AFFECTING DRUGS IS STRICTLY PROHIBITED.
 
CAR CLASSIFICATION
General Overview of Class Structure – NNJR Follows the National PCA PCR’s for Medium Size Regions.
Cars are placed into classes so that cars of approximately the same capabilities compete with each other. In addition, Rookies (see below for definition) run in separate classes from veterans.
Men run in the “Open Class”. Women may elect to run in either the “Ladies Class” or the “Open Class”.

Open Classes will compete against other cars in their respective classes.  (i.e. S5 competes against other S5 cars).  S Classes, P Classes, Ladies Classes, and Rookie Classes will be “paxed classes” where all of the participants (in this case, all rookies, ladies, or showroom stock cars) run against each other regardless of car classification, with their scores handicapped by their car type.  These handicap factors are called “pax” factors.  The paxes to be used for the season are shown in the rules section. (i.e. S1 competes against S1, etc., with factors applied to the raw times for handicapping)

Stock is designed for cars with no modifications.  The NNJR classification philosophy is for Stock classes to only allow minor changes, of the type commonly made by performance-minded Porsche owners. Improved classes are designed primarily for cars with significantly improved suspensions. The Modified class is for cars with significant changes, such as lightweight bodywork modifications and engine swaps.  Modified cars must maintain the same levels of essential equipment as a “street” car, however including  headlights, taillights, turn signals, a windshield and all glass (Lexan or similar is acceptable as replacement as long as it is clear), body panels (original or replacement)

X Class cars will be classed and paxed according to current SCCA Class and Pax Classifications and posted on the NNJR website.
No changes may be made to cars in Stock, Improved, or Modified classes, unless authorized below. R Class is limited only to the fact that the car must have a Porsche engine block and chassis.

Misclassification can be protested. Use or deletion of any equipment not covered in these rules that, in the opinion of the Event Chairperson, results in increased performance will move the car into the next higher class (Improved or Modified).
PROPER CLASSIFICATION IS THE RESPONSIBILITY OF THE ENTRANT
Categories
There are four categories of classes – Showroom Stock, Production, Improved and Modified. Categories are related to automobile configuration.

The Showroom Stock (S) Category contains classes of automobiles as normally delivered and specified for use in the United States and Canada. Factory options as normally available for a specific model year are permitted. Certain factory and/or dealer installed equipment/ options will move an automobile out of S and into Production or higher as specified in the Modifications Allowed List table so as to maintain the intent and integrity of the Showroom Stock classes.

The Production (P) category contains automobiles (as normally delivered to the United States and Canadian public through authorized sales outlets of the manufacturer) plus others with limited performance-affecting changes from stock. The Improved (I) category contains automobiles with more substantial performance-affecting changes from standard (stock) specification, whether changed by the factory, dealer or owner. These modifications have defined limits. These automobiles are classed according to their number of cylinders and actual displacement.
The Modified (M) category contains automobiles that have performance-affecting modifications outside of the limits of the Improved category and for race automobiles (factory-built or otherwise). These automobiles are classed according to their specified number of cylinders and actual displacement.

Classes
Each category is divided into classes, grouping automobiles with similar performance potential. Each class is divided into separate men’s and ladies’ groups for scoring purposes. Classes prefixed with “S” are for Showroom Stock, those with “P” are Production Classes, those with “I” are Improved Classes and those with ”M” are Modified Classes. Ladies classes are designated with a suffix “L” as appropriate for each class as designated in the Class Chart below.

Showroom Stock classes are available for a limited number of recently manufactured automobiles. Those automobiles exceeding the Showroom Stock class allowances, not listed in Showroom Stock or not considered factory race cars are considered Production automobile models and are initially assigned to a Production class. Those individual automobiles with significant modifications are “progressed” into classes with higher performance potential. Modifications are discussed under “Class Progression” below. The numerical assignments of the classes do not necessarily indicate relative performance potential between classes. Factory and non-factory race cars are considered modified and are classed by the number of cylinders and actual displacement. These classes, plus those reserved exclusively for progressed cars, are presented in the Class Chart. For the purpose of automobile classification, some dealer and factory options may not be considered “STOCK” and thus not allowed in the Showroom Stock or Production categories. However, those dealer and factory options that are not considered to
improve performance are allowed in the Showroom Stock and Production classes (i.e., trim packages, air-conditioning, etc.). Showroom Stock or Production classes are also the starting point in the determination of final classification of the automobiles that have been changed from stock. Production based “racing” automobiles will be classed according to their initial car type and the modifications they have as specified in these rules.

If an automobile is not a United States-specification automobile, the entrant must be able to prove that the automobile is equivalent to the respective Production automobile (as delivered to the United States public through authorized sales outlets of the manufacturer) to qualify for Production classification or equivalent to the respective

Improved automobile to qualify for Improved classification; otherwise the automobile will be classified in the Modified category. DOT and/or EPA Certification alone do not make an automobile equivalent to a U.S. specification automobile for the purposes of the PCR’s.

Class Progression
Showroom Stock automobiles are not permitted any modifications beyond A-2.5.3. and A-2.5.4.

For Production category automobiles, the classification of your automobile depends not only on the model but also on the type of changes (if any) made to or options on the automobile. Improvements and alterations may cause your automobile to progress into a more competitive class. Some modifications are “free,” that is allowed without effect on classification. Other modifications from stock are considered to affect performance and therefore may move the automobile into any of the Production, Improved or Modified classes depending on the performance effect of the modification.

The Modifications Allowed List provides an overview, but not a definition, of what modifications are allowed for what categories. Each category section will define the limits or allowances for particular items as listed below. If a modification is not specifically listed, it is not allowed in that category except in Modified.

A-2.5. Allowances
Allowances are divided up into five categories: Free, Showroom Stock, Production, Improved and Modified.

Some modifications are “free,” that is, allowed without effect on classification. If certain modifications specified in the text are performed on your automobile, you will be moved to the Production, Improved or Modified class where that modification is permitted. In Modified, the rules specify the minimum requirements necessary to compete.

A-2.5.1. Engine Swaps. Only Porsche automobiles with Porsche-based engines and transmissions may enter the autocross.

A-2.5.2. Update/Backdate Modifications (Production/Improved).Major assemblies, such as engines and transmissions, may be substituted if the parts are from the same series automobile. Some changes affect classification; others do not. (a) Changes Within Model Range: Automobiles may be updated or backdated without effect on classification provided the specifications remain within the boundaries of the model range for the automobile. Model ranges are defined in the chart below.

MODEL RANGES
Series Models Year
356: 356 Super 90 & SC ………………………………All
Carrera-1500 & 1600 …………………………..All
Carrera-2000 GS………………………………….All
Any Other 356 Model …………………………All
911: Any 911 Model…………………………….1965-68
Any 911 Model…………………………….1969-73
Any 911 Model…………………………….1974-77
911SC …………………………………………1978-83
911 Carrera ………………………………..1984-89
911 Carrera 2 ………………………………1990-94
911 Carrera 4 ………………………………1989-94
911 Carrera (993) ……………………….1995-98
911 Carrera (996) ……………………….1999-05
911 Carrera (996 GT3) ………………..2003-05
911 Carrera (997)……………………….2005-On
911 Carrera (997 GT3) ………………2006-On
912: 912……………………………………………………..All
912E……………………………………………………All
914: 914/4 ………………………………………………….All
914/6 ………………………………………………….AllAutocross
924: 924 …………………………………………….1977-82
924S …………………………………………..1987-88
924 Turbo (931) ………………………………….All
928: 928 …………………………………………….1978-86
928 …………………………………………….1987-95
930: 930 …………………………………………….1976-80
911 Turbo……………………………………1986-89
911 Turbo……………………………………1990-94
911 Turbo……………………………………1996-98
911 Turbo(996) …………………………..2001-05
911 Turbo (997) …………………………2006-On
944: 944……………………………………………………..All
944S……………………………………………………All
944S2 …………………………………………1989-91
944 Turbo …………………………………………..All
968: 968……………………………………………………..All
986: Boxster ……………………………………….1997-04
Boxster S……………………………………..2000-04
Boxster (987) …………………………….2005-On
Boxster S (987) …………………………..2005-On
Cayman……………………………………..2006-On
Cayman S ………………………………….2006-On
9PA: Cayenne ……………………………………2004-On
Cayenne S ………………………………….2003-On
Cayenne Turbo …………………………..2003-On
980: Carrera GT …………………………………………All
970: Panamera …………………………………………..All

(b) Changes Outside the Model Range: The degree of updating or backdating will, in most cases, affect the degree of class/category progression. Selective substitution, as opposed to complete substitution, may result in a category change. For instance, if only one or two major components (such as an engine and/or transmission) are substituted from outside the model range without completely updating or backdating the automobile, then the automobile may change categories. However, if an automobile should be completely updated or backdated, it would then be classed according to its new (substituted) model range. An example would be a 1972 911 engine installed in a 1967 chassis. Then to achieve a complete update, a 1972/1973 transmission and associated ring and pinion gear must also be installed plus the wheel base must be lengthened and the new weight must be in the 1972/1973 range. Items that do not affect performance need not be changed.

A-2.5.3. “Free”Modifications. Safety equipment is free in all classes except Showroom Stock, provided limits of any class category are met. Items considered free include harness bars, fire extinguishers, non-factory seat belts, race seats, window nets, head rests, cut-off switches, tow hooks, seat back braces and required
mounts for any of the above. In Showroom Stock, attachments points or mounts for any of these items may be left in the automobile, but the actual device will not be allowed to remain or be used if it could be considered to provide the driver or the automobile any performance advantage.

A-2.5.4. Showroom Stock Modifications. Unless otherwise specified in these rules, no alterations or modifications are allowed to these automobiles. Only original equipment manufacturer (OEM) wheels as originally specified and OEM tire sizes as originally specified for each specific model year are permitted. All Showroom Stock class tires must have a tread wear rating of 140 or greater. Wear and tear items, excluding tires, must be comparable in construction and specifications to the originally supplied factory components. Adjustments are permitted provided no modifications and/or alterations are necessary to achieve the desired adjustment. Automobiles must run with their spare tire, jack, lug wrench, owner’s manual(s), tools, etc. Owner’s manual(s) will be used to help verify questionable equipment options and designated wheel/tire sizes. No aftermarket equipment that might be reasonably perceived as performance affecting is permitted in these classes. Items included in this restriction include, but may
not be limited to, aftermarket air filters, aftermarket exhaust systems, aerodynamic aids, computer chips, five/six point seatbelts, race seats, harness bars, roll bars, roll cages, etc.

A-2.5.5. Production Modifications. The Production category is for street automobiles altered beyond the
Showroom Stock limits and older Porsches. The following adjustments, alterations or modifications are allowed in the Production class automobiles plus what was allowed in Showroom Stock. Automobiles may be updated to another model provided all of the automobile is brought up to that models specifications.

A-2.5.5.1. Engine
(a) Air Cleaner: The air cleaner may be removed or replaced with another type.
(b) Modified Ignition: Any modification is permitted, provided an original type distributor is used.
(c) Modified Carburetors: Any automobile originally carbureted may have any carburetor, provided the throttle bore and venturi dimensions are not changed from original specifications. Jet sizes may be changed. 911 models with mechanical fuel injection or Solex carburetors may change to replacement carburetors that have throttle bores no larger than 40mm. 914 models may be converted to carburetors with throttle bores no larger than 40mm.
(d) Fuel Injection: No substitution of performance affecting components for mechanical fuel injection is permitted. Any DME EPROM chip may be used except for those chips programmed to alter turbo boost. No modifications to the intake manifold are allowed.
(e) Wet Sump Modifications: If an automobile has a wet sump lubrication system, the sump may be modified to ensure a constant source of engine lubrication at the oil pickup tube. If an automobile has a dry sump lubrication system, no modifications are permitted.
(f) Modified Oil Cooler/Filter: The addition of any oil cooler and/or filter is permitted.
(g) Substituted Roller Bearing Cranks: For 356-based or Carrera 4-based engines, any roller bearing crank may be used. Plain bearing cranks may be substituted for roller bearing cranks. Counterbalanced cranks are permitted.
(h) Balanced Engine: Balancing of internal engine parts is permitted.
(i) Camshafts: The stock camshaft must be used.
(j) Exhaust Modifications: Alternate exhaust systems are permitted after the head(s) for automobiles with or without catalytic converters. Headers are permitted. A muffler is required. Air pumps may be removed.
(k) Air Conditioning: Removal is permitted provided original automobile may have been delivered without it.
(l) Overbore: Overbore is allowed up to 1.2MM(0.047”).
(m) Gasoline: Any grade of automotive gasoline available to the general public through normal retail service stations is permitted.
(n) Clutch: Any model clutch is allowed. Rubber center clutch discs may be replaced with spring discs. The flywheel may be lightened.
(o) Velocity Stack: Velocity stacks may be added or modified.
(p) Compression Ratio: Engine compression ratio’s may be increased up to .5 points from U.S. production specifications.
(q) Fuel Pump: Fitting of an electric fuel pump is permitted.
(r) Chain Tensioners/Guards: Any chain tensioner or guards are permitted.
(s) Battery: Any battery may be used. Those automobiles delivered with two batteries may remove one.

A-2.5.5.2. Suspension
(a) Limited Suspension Adjustments: Any adjustment of the standard suspension components is permitted, provided no machining is required for the adjustment. Factory components must be used for mounting of struts and shock absorbers to the body.
(b) Alignment: Any adjustment may be made provided no other change is necessary to make the adjustment.
(c) Coil Springs/Torsion Bars: Any coil spring may be replaced by any other coil spring. Any torsion bar may be replaced by any other torsion bar as long as they are of the same type and mount in the same manner without modification to the chassis or suspension components.utocross
(d) Shocks Absorbers: Any shock absorber may be used provide it has no more than a single adjustment.
(e) Adjustable spring perches are allowed.
(f) Sway Bars: Any anti-sway bar may be installed. Sway bar may not be adjustable from the cockpit.
(g) Rear Camber Compensation (356 Only): Any rear camber compensating device may be used.
(h) Bushings: Non-standard (non-elastic) suspension bushings may be used.
(i) Shock Tower Brace: A front and/or rear shock tower brace may be used in any automobile provided that:
(1) it can be quickly and easily removed, it must be a bolt-in component. Any number of attachment
points may be used; (2) all attachment points are within three inches of a vertical plane passing through the top center of the shock absorber.
(j) Spring Plates: Adjustable spring plates are permitted on any automobile not so equipped from the factory.
(k) Tie-Rod Ends: The use of 911 Turbo tie-rod assemblies is permitted.
(l) Hydro-pneumatic Suspension: Removal of this suspension is not only allowed but is encouraged.
(m) A-arms: 924/944/968 series may use aftermarket aarms provided suspension geometry is not altered.

A-2.5.5.3. Brake/Wheel/Tire
(a) Tires: All tires must be Department of Transportation (DOT) approved. Any DOT listed tire may be used providing they have a visible tread, have DOT wear indicators and have visible tread across the entire tread surface. These may be “R” type tires. Tire aspect ratio and width is free but must fit under the stock fender wells. Tires must be marketed nationally and generally available to all competitors. The cord may not be visible before, during, or after runs. Recapped tires or re-grooved tires are not allowed. Competitors are responsible for policing the “rubbing tire” rule and protests must be made before timed runs.
(b) Track Width: Modifications to track width are permitted provided no modifications to the automobile,
other than increasing the stud length, are performed. Increase may not be more than 1.0” over stock. Only
356 models with drum and very early disc brakes may use individual spacers for each wheel stud.
(c) Brakes: Pads, linings, and brake lines of any manufacture
may be used. Any type of brake cooling may be used. Rotors may be drilled or slotted. Brake bias
valve may be changed but cockpit adjustable valves are not permitted.
(d) Increased Rim Width: Rim width may be increased up to 1.0” over the widest rim available from the factory (front and rear respectively; see Appendix V) for that model range so long as the width does not
extend beyond the stock fender width as measured from the top of the tire and fits the stock fender wells.
(e) Wheels: All wheels must be the same diameter as available from the factory for the model range of the automobile.
(f) Spare Tire: The supplied spare tire may be removed

A-2.5.5.4.Chassis/Body/Interior
(a) Limited Fender Modifications: Fenders (including wheel openings) may be modified provided the tirewheel- spacer combination and ride-height setting used could be used without the fender modification (i.e., could be used on an unmodified automobile of the same model and year.) In the event of a protest, the entrant must be able to prove compliance with this rule.
(b) Interior Modifications: Any accessory, gauge, or indicator may be fitted if its purpose is to improve driver or passenger comfort or convenience and provided such items have no effect whatsoever on mechanical performance. Alternate seats may be used and floor mats may be removed. Any steering wheel is allowed. (c) Roll Bars: Roll bars are permitted. Full interior roll
cages are not permitted.
(d) Spoilers: Any rear spoiler, unless as delivered as a factory option, is permitted provided the leading edge of the spoiler is attached to the automobile, the spoiler is no wider than the stock body width and the spoiler doesn’t exceed 5” in height from the leading edge.
 (e) Air Dams: Any front air dam , unless as delivered as a factory option, is permitted provided it does not extend to less than 3” above the ground and not forward of the front bumper.
(f) Seam Reinforcement (914 Only): Seam reinforcement kits are permitted “free” on 9l4s, provided each
reinforcement is limited to a single seam and that all reinforcements combined do not substantially
increase the rigidity and stiffness of the chassis. It is recommended to 914 model owners to have the chassis inspected for rust on a periodic basis. (g) Bumpers: Bumpers may be removed on any 356 series automobile.
(h) Weight: Automobile must meet minimum weight. Ballast is not allowed.
(i) Bolt-on windshields: Bolt-on windshields may be removed.
(j) Jack/Tools/Manuals: Removal of jack, tools and owners manual(s) is allowed.

A-2.5.5.5. Transmission
(a) Limited Slip: Only automobile models as could have been ordered from the factory with limited slip may use the same factory limited slip.
(b) Gear Shift Linkages: Gear shift linkages may be modified or exchanged. This permits the use of a short shift kit in any automobile or the use of side-shifter transmission in any 914.

A-2.5.6. Improved Modifications. The improved category is for street vehicles with modifications beyond those allowed in the Production Category. The modifications are limited but much more liberal than those in the Showroom Stock or Production Categories. The following adjustments, alterations, or modifications are allowed in the Improved class automobiles plus what was allowed in the Showroom Stock and Production classes.

A-2.5.6.1. Engine
(a) Mufflers: Mufflers may be removed provided this is permitted by the event organizer and the local authorities/jurisdiction.
(b) Ignition: Any ignition system is allowed provided the same number of spark plugs is retained.
(c) Gasoline: Any gasoline is permitted.
(d) Engine Substitution: Any Porsche engine is permitted in any automobile.
(e) Fuel Management: Automobiles may use any fuel management/induction system including chips or
other means that alter turbo boost. Turbochargers or superchargers are permitted.
(f) Compression Ratio: Engine compression ratio’s may be increased up to 1.0 points.
(g) Battery Location: The battery may be located anywhere within the automobile.
(h) Intake System: Any intake system may be used.
(i) Wet/Dry Sumps: Any change or addition is permitted.

A-2.5.6.2. Suspension
(a) Shocks Absorbers: Multi-adjustable or remotely adjustable shock absorbers are permitted.
(b) Camber Plates: Camber plates are permitted. Machining of factory mounting points is permitted to allow greater suspension adjustment.
(c) Raised Spindle: Raised spindles are permitted on strut type suspensions.
(d) Suspension Mounts: Any suspension mount may be used provided the number of mounting points and
mounting locations remain as factory.
(e) Suspension Arms: Any suspension arm may be used provided use requires no other automobile modifications. For example, this includes the use of any lower control arm, tie-rod assembly and/or bump steer kit.

A-2.5.6.3. Wheel/Brake/Tire
(a) Brakes: Any brake modifications are permitted. Any brake biasing valve is permitted.
(b) Tires: Any DOT tire is permitted. The cord may not be visible before, during or after official timed runs.
(c) Track Width: Modifications to track width are permitted up to 2.0” over stock. Only 356 models with drum and very early disc brakes may use individual spacers for each wheel stud.utocross
(d) Increased Rim Width: Rim width may be increased up to 2” over widest rim available from the factory (front and rear respectively; see Appendix V) for that model range so long as the width does not extend beyond the fender.
(e) Wheels:Wheels may be any diameter.

A-2.5.6.4. Chassis/Body/Interior
(a) Roll Bars/Roll Cages: Roll bars or full interior cages are permitted.
(b) Spoilers: Any spoiler is permitted.
(c) Air Dams: Any front air dam is permitted.
(d) Interior: Automobile must have dashboard, windows (glass or plexiglass), visors (if originally equipped), headliner, and door panels. The original number of seats and passenger restraints must be present. Removal of mats and loose carpeting is allowed (i.e., what isn’t originally screwed and/or glued down). Headlights, taillights, brake lights and turn signal lights must be operational.
(e) Bodywork: The use of fiberglass or other material body components is permitted for the following
components: hoods (front and rear), rear deck lids, bumpers and rocker panels.
(f) Fenders: Fenders may be altered to allow fitting of alternative wheels and tires.
(g) Fuel Tanks: Fuel tanks may be changed and/or relocated.
(h) Weight: Automobiles must meet the minimum weight for its class as autocrossed, without the weight of the driver. Ballast may be added to meet the minimum weight. Ballast must be securely bolted or attached inside the vehicle.

A-2.5.6.5. Transmission
(a) Transmission: Any Porsche based transmission is permitted.
(b) Transaxle gear ratios. Any ratio set may be used outside of the specified gear set. Ring and pinion may be altered.
(c) Limited Slip: Any limited slip may be used.

A-2.5.7. Modified Modifications. The modified category includes all automobiles modified beyond the allowable limits specified in the Showroom Stock, Production and Improved categories as well as some Limited Production and “tuner” automobiles. These rules provide the minimum that is required for the automobile to compete in this category. Some items are specified that are not allowed in this category. Unless defined as a production vehicle with complete documentation proving so, all racing, rally and special non-production Porsche models shall be included in this category.

A-2.5.7.1. Engine
(a) Engine: A Porsche based engine is required.
(b) Displacement: The displacement may be increased to that of the maximum in the class.
(c) Fuel Management:Modifications to the fuel injection or carburetion system are free. The use of turbochargers or superchargers other than those used in production is permitted by class allowance. Modified boost pressure is permitted.
(d) Ignition: Any ignition system is permitted.
(e) Nitrogen Bearing Fuels: These types of fuels are not permitted.

A-2.5.7.2. Suspension
(a) Machined Suspension: Any adjustment may be made and machining is allowed (such as machining to attain negative front camber on 356-series cars). Suspension points may be relocated.
(b) Multi-linked Suspension: This suspension type is permitted and is free.

A-2.5.7.3.Wheels/Brake/Tire
(a) Wheel and Tire: Any wheel and tire combination is permitted. Non-DOT tires are permitted. The cord
may not be visible before, during or after official timed runs.

A-2.5.7.4. Chassis/Body/Interior
(a) Chassis: Original Porsche based chassis, unibody or tube frame chassis is permitted.
 (b) Roll Cage: Any roll cage may be used. It may be used to connect suspension or any other component
(c) Bodywork: Automobile bodywork must maintain recognizable external features of the Porsche model.
All four tires shall not extend beyond the fender openings at the highest point of the tire, unless the
Porsche model was originally an open-wheeled design. Automobile bodywork must include a front and rear trunk or deck lid and doors.

A-2.5.7.5. Transmission
(a) Transmission: Any Porsche based transmission is required.

A-2.5.8. Other Modifications. Any equipment, component, part, or modification which is deemed performance- affecting and which is not specified will make the automobile entered subject to reclassification to a higher class or category by the Safety Inspection team or the Autocross Chair at his/her discretion or by protest of a competitor in the same class the automobile is competing.

2012 Porsche Club of America
Competition Rules for Medium Sized Regions

S1: 968 (All), 911 Carrera 2 (964:1990-1994), Carrera 4 (964:1989-1994), RS America (1993-1994), Boxster (986:1997-2004), Cayenne (9PA:2003- On), Panamera (2010- On)
S2: 911 Carrera (993:1995-1998), Boxster S (986:2000-2004), Boxster (987:2005-On), Cayman (2006-On) 
S3: 911 Carrera (996:1999-2004), 911 Carrera (997:2005-2011), 911 Carrera (991:2012-On) except 991S, 911C2 Turbo (965: 1990-1994), Boxster S (987:2005-On), Cayman S (2006-On);
S4: 993 Turbo (All), 996 Turbo (Non-GT2), 997S except X51 (2005-2009), 991S (2012-On), Boxster Spyder, Cayman R
S5: 997S X51 (2007-2009), 997S/GTS (2010-2011), 996 GT2/GT3 (2002-2005), 997 GT2/GT3/GT3RS (2007-On), 997 Turbo (All), Carrera GT (980:2004-On)

P1: 356 (All), 912/912E (All), 914/4 (All), 924 (All), Cayenne (9PA:2003- On), Panamera (2010- On)
P2: 911 (1965-1969), 911 (1970-1977), 914/6 (All), 924S (All), 924 Turbo (931: All), 944 (All), 944S (All)
P3: 911SC (1978-1983), 911 Carrera 3.2 (1984-1989), 911 Speedster (1989); 944 Turbo (951: All), 928 (All)
P4: 911 Carrera 2 (964:1990-1994), Carrera 4 (964:1989-1994), RS America (1993-1994), 944S2 (All), 968 (All), Boxster (986:1997-2004)
P5: 911 Turbo (1976-1989), 911 Carrera, Carrera S, C4S (993: All), Boxster S (986:1997-2004), Boxster (987:2005-On), Cayman (2006-On)
P6: 911 Carrera (996:1999-2004), 911 Carrera 997 (2005-2011), 911 Carrera (991:2012-On) except 991S, 911C2 Turbo (965: 1990-1994), Boxster S (987S:2005-On), Cayman S (2006-On)
P7: 997S except X51 (2005-2009), 993 Turbo (All), Boxster Spyder, Cayman R 
P8: 996 Turbo (Non-GT2), 997S X51 (2007-2009), 997S/GTS (2010-2011), 991S (2012-On), 996 GT2/GT3 (2002- 2005), 997 GT2/GT3/GT3RS (2005-On), 997 Turbo/TurboS (All), Carrera GT (980:2004-On)

I01: Improved Automobiles (All 4 Cylinder, up to 1999cc, 1800 pounds minimum; All 4 Cylinder, 2000cc up to 2699cc, 2500 pounds minimum; All 4 Cylinder, 2700cc and above and All 6 Cylinder, up to 2399cc, 2200 pounds minimum)
I02: Improved Automobiles (All 6 Cylinder and above, 2400cc up to 3199cc, 2150 pounds minimum; All 6 Cylinder and above, 3200cc and above; 2700 pounds minimum; All Turbo/Supercharged 4 Cylinder; 2150 pounds minimum; All Turbo/Supercharged 6 cylinder and above; 2500 pounds minimum)

M01: Modified Automobiles (All 4 Cylinder, up to 1999cc; All 4 Cylinder, 2000cc up to 2699cc; All 4 Cylinder, 2700cc and above; All 6 Cylinder, up to 2399cc)
M02: Modified Automobiles (All 6 Cylinder and above, 2400cc up to 3199cc; All Turbo/Supercharged 4 Cylinder; All 6 Cylinder and above, 3200cc and above; All Turbo/Supercharged 6 cylinder and above)

There will be several Championships decided during the Autocross season:

Class Championships
• For those who compete in more than one class during the season- The class competed in most frequently will be considered the primary class.
• For those that compete in two or more classes for an equal number of times during the season, the class with the highest number of championship points will be considered the primary class.
• NNJR Class Champions will be determined by taking the sum of all points earned for the year for each driver’s top 6 events. (This assumes 8 events.  If fewer or more than than 8 events are run, then amount of event to count will be 2 fewer than the total events run.)
• A minimum of four (4) events are required to be eligible for a season trophy.
 
Open Classes
• Open classes (not including ladies classes and rookie classes) will be eligible for Class Trophies at the end of the season based on their results within their class.  We will award positions 1st through 3rd in each class.
• We will determine points by class as follows: First Place earns 10 points, second place earns 8 points, third  place earns 6 points. Missed events earn a Zero, however.

Ladies Class (Paxed), Rookie Class (Paxed)
• Ladies Classes are to be paxed to determine winners at each event.  Rookies Classes are also to be paxed to determine winners at each event.  The winners of the ladies and rookie classes will be assigned points based on their respective positions, and assigned points in the same way as the open classes (described above).
• Ladies Class Champions and Rookies Class Champions will be awarded Season Championship Trophies for positions 1st through 3rd.