PRO COMPACT

Class Designations: PC preceded by car number.

McKern Pro Compact will race utilising a Heads Up Pro Tree and and will race using a Chicago Shootout format. It is designed for full-bodied purpose-built, Pro Stock style RWD race vehicles using 4-cylinder or 2-rotor engines.  Full tube chassis permitted.  Maximum of 2 power adders permitted. 

CLASS REGULATIONS

Minimum Weights  

• 4 Cylinder – 1,950 pounds/ 884.5kgs
• 2 Rotor – 1,950 pounds/ 884.5kgs

All weights include driver, verified after the run.  Jamboree reserves the right to amend weights in order to maintain parity in the class. 

Engine  

Engine: Engine swaps permitted. Any production 4 cylinder, or 2 rotor engine permitted. Aftermarket block or cylinder heads permitted. Replacement cylinder head must bolt to original block, and function, with no modifications. Replacement block must accept original cylinder head, and function, with no Modifications. Maximum 2 power adders. Dual stage nitrous systems or multiple superchargers/turbochargers will be counted as one power adder each. Deck-plate and/or welding on deck surface prohibited. Dry sump permitted. Use of vacuum pump for evacuation of crankcase pressure permitted. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Accepted engines: -  4 Cylinder Maximum capacity 3.0 Ltr
                                      2 Rotor

Exhaust: Open exhaust permitted, except where prohibited by track rules. All open exhaust outlets must terminate below the centre line of the front wheel, or must exit the bonnet from the opposite side to the steering wheel as measured from the centreline of the vehicle. All turbocharged vehicles must have two 3/8 inch (10mm) bolts inserted across the diameter of the turbine outlet pipe at 90 degrees to each other, to obstruct the exit of debris in the event of a turbine failure. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Fuel: Ethanol, methanol or petrol only. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Fuel System: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Intercooler: Permitted. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Liquid Overflow: Required.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Lower Engine Containment Device: Required on all piston-engine cars using power adders quicker than 9.00 seconds (1/4 mile)/5.70 seconds (1/8 mile). Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Nitrous Oxide: Permitted. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Supercharger, Turbocharger: Permitted. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Driveline 

Driveline: Driveshaft protection required. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Flywheel Shield: All manual-transmission-equipped RWD cars must have a steel or titanium bell housing. Cars for which an SFI Spec 6.1, 6.2 or 6.3 flywheel shield is not available may use an SFI flywheel shield from another application bolted to a motor plate that is bolted to the engine at all available bolt holes, or use a fabricated shield made of 1/4-inch (6.3mm)-thick steel, surrounding the bell housing 360 degrees, extending 1 inch (25mm) forward and 1 inch (25mm) rearward of the rotating clutch assembly. Shield must be securely attached to frame or frame structure; may be multi-piece. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Transmission, Automatic: Trans brake permitted. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Transmission, Manual: Any transmission permitted. Automated, timer-type, electric, electronic, hydraulic, etc. shifting mechanism prohibited; each individual shift must be a function of the driver and can be made manually,
electronically or pneumatically. Clutchless transmissions up to five forward speeds permitted.Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Brakes and Suspension 

Brakes: Four-wheel hydraulic brakes mandatory.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Steering:  Aftermarket steering gear permitted.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Suspension: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Wheelie Bars: Permitted.  Maximum length 75 inches (1,905mm) from rear bumper. May be adjustable, but must be fixed during run. Any movement or adjustment during run prohibited. Pneumatics, hydraulics, electronics, etc. prohibited. Wheelie-bar wheels must spin free at the starting line. Any preload prohibited.

Frame 

Ballast: Permitted. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Chassis: 4 cylinder & 2-rotor powered vehicles may utilise a full tube chassis. FWD and AWD vehicles may be converted to RWD configuration. Roll cage mandatory. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Ground Clearance: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Wheelbase: OEM wheelbase plus 10 inches (254mm) maximum or minus 2 inches (50mm) maximum. Maximum wheelbase 115 inches (2921mm) regardless of OEM wheelbase. Vehicles with a current Technical Inspection and Log Book at 31 December 2009 with a wheelbase exceeding the 115inch maximum will be permitted to continue to compete until retired. Maximum wheelbase variation from left to right is 1 inch (25mm).

Tyres and Wheels 

Tyres: Racing slicks permitted.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Wheels: Must be automotive-type wheels suitable for street or racing use. Minimum wheel diameter 13 inches (330mm). Wheel studs must be threaded into hex portion of wheel nut a distance at least equal to the diameter of the stud.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Interior 

Interior: Optional. Minimum of drivers seat required. Holes, slots, or other openings in floor and/or firewall prohibited.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Body 

Airfoils / Spoilers / Wings: Permitted.  Airfoils / Wings / Spoilers may NOT be wider than the widest part of the vehicle body.  Any movement or adjustment during a run is NOT permitted.

Body: Any automotive or light truck body permitted. All bodies must be painted and in good cosmetic condition.  Mild customising permitted.  Must retain full-bodied size and appearance, with minimum 2 functional doors.  Lightweight body panels permitted.  One-piece front clips permitted.  Body must be full scale (7/8, 3/4 scale, etc. prohibited). Maximum front overhang 45 inches (1143mm) measured from front most part of vehicle to the centre of front axle.

Street Equipment: Headlights and taillights may be painted on. Operative taillight required. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Windshield/Windows: OEM glass may be replaced with Polycarbonate or other shatterproof material, minimum thickness 1/8-inch (3.1mm).

Electrical  

Batteries: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Computer: Vehicle management systems prohibited. Electronic fuel injection permitted. Aftermarket and piggy back computers permitted. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Data Recorder: Permitted. Speed sensors on any un-driven wheel prohibited. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Ignition: Any ignition system permitted. Rev limiters and two steps permitted.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Driver and Safety 

Arm Restraints: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Fire Extinguisher System: Permitted.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Head Protector: Required.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Helmet: Required. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Licence Requirements: Must have track sanctioning body Licence as a minimum. Subject to track sanction requirements.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Neck Collar: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Parachute: Mandatory. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Protective Clothing:  Required.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Safety Belts: Required. Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Window Net: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

General  

Racing: McKern Pro Compact will utilise a Heads Up Pro Tree start and will race using a Chicago Shootout format for field sizes of 16 to 6 or elimination style for fields over 16.  

Record setting: To be eligible to set a McKern Pro Compact Class Record, vehicles must meet the minimum weights and all class rules.  Only Qualifying, Eliminations and Final round runs can be counted towards ET/MPH records.  To set a record, it must be backed up by a second run within 1%.  It is the driver’s responsibility to present the vehicle to the scrutineering shed immediately after a run if they feel a record has been set.  Failure to do so will forfeit the record.  Officials will verify weight after a run if the racer feels they have set a record for that class. The record is only awarded to that driver holding the record at the end of the event.

Sponsor Decals: All racers must display the event and class sponsor decals on both sides of the race vehicle at all times during the event.  Decals must be in a prominent location, clearly visible as required by The Jamboree AUS Pty Ltd.  Failure to do so will forfeit any prize purse posted and may lead to disqualification.  No other event decals permitted.

Tow Vehicles: Permitted.  Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Warm Up Procedure: Refer track Sanctioning Body General Regulations - ANDRA or IHRA

Weighing: All McKern Pro Compact vehicles must report to the scales after every pass, win or loss in qualifying or racing.  Failing to do so in qualifying will have the run disallowed.   Racers failing to do so in racing will be disqualified.