Street Class
STREET CLASS
The essence of Street Class is grass-roots time attack racing. Street driven cars that see weekend track use driven by the registered owner of the vehicle.
CATEGORIES
Trophies will be awarded as detailed below;
- Street Class Fastest Outright
- Street Class Runner-up
- Street Class fastest AWD
- Street Class fastest 2WD
DRIVERS
- Street class cars must have valid registration and be driven by the registered owner
- Professional drivers (a driver that is paid to drive or provide driving instruction) are not permitted to enter street class
VEHICLES
- All cars must be mass produced and available, or have been available, to commercially buy from a major manufacturer as an OEM vehicle
- No open wheel, kit, clubman or tube-frame purpose built race cars are permitted, as determined by event staff
- All cars must have one internal combustion engine and four wheels.
- Competition is not open to rear-engine cars with 6-cylinders or more
- Competition is not open to mid-engine cars with 8 cylinders or more
- Competition is not open to V10 or V12 powered factory vehicles
MODIFICTIONS
Chassis
- The chassis and factory metalwork is not permitted to be modified in any way
- Weld-in half roll-cages are permitted in two-door cars that have been registered as a two seater
- Bolt-in roll cages are premitted
- Seam/stich/spot welding is permitted
- Factory glass windows must be retained
Engine
- Cars must use their original engine configuration
- Engines from a higher spec model of the same car may be transplanted
ie – Converting a CA18DE S13 Silvia to SR20DET Silvia
- Factory engine layout and mounting points must be used
- Nitrous Oxide is not permitted
- Engine internals and bolt-on modifications are free
- A full exhaust system exiting from the rear of the car must be used
- Catalytic converters are permitted to be removed during competition
- All vehicles must use un-leaded petroleum fuels , ethanol blends or diesel fuel
Driveline
- The factory gearbox or a gearbox from the same manufacturer must be used.
ie Nissan Skyline RB25 gearbox used on SR20 in Nissan Silvia
- Aftermarket gearsets are permitted
- Sequential gearboxes and dedicated racing gearboxes are not permitted
- The factory gearbox mounting points must be used
- An OEM differential must be used from the same manufacturer
- Aftermarket differential centres are permitted
- Factory driveline mounting points must be used
- Aftermarket carbon-fibre tailshafts are not permitted
Suspension and steering
- The factory suspension layout and mounting points must be used
- The factory front and rear sub-frames must be retained and remain un-modified
- Knuckles and up-rights must remain as per factory
- Coilover suspension is permitted
- Direct replacement aftermarket adjustable suspension arms are permitted
- Aftermarket suspension bushes are permitted
- The factory steering rack must be used
- Aftermarket bolt-on tie rods and tie rod ends are permitted
Brakes
- Brake modifications are free, providing they use the factory mounts
Wheels and Tyres
- Wheel size is free
- Centre lock wheels are not permitted
- Tyres must have a UTQG tread wear rating of 120 and over
- Tyres must be commercially available in Australia
- Event staff reserve the right to conduct spot inspections of tyres and any competitors using in-correct tyres or tyres not displaying a treadwear rating will be disqualified.
- Competitors are only permitted to use a maximum of two sets of tyres ( 8 in total ) on the competition day.
Bodywork
- Aftermarket lightweight FRP or carbon-fibre bonnets are permitted
- Aftermarket rear wings are permitted
- FRP or carbon-fibre front bumper, rear bumper and sideskirts are permitted
- FRP or carbon-fibre front fenders/guards and rear over-fenders are permitted
- Lighweight FRP or carbon-fibre doors, bootlid and roof are not permitted
- The factory doors and side intrusion bars must remain fully intact
Interior
- The interior must remain fully intact with the following exceptions
- Front seats may be replaced by aftermarket FIA approved bucket seats
- The back seat may be removed to alloy fitment of a half roll cage
- Interior trim may be modified locally to alloy fitment of a bolt-in roll cage
- A working head unit and a pair of speakers must be installed
- The entire heater system must be installed and working
- The air-conditiong system can be removed
SAFETY
- All cars must have a fire extinguisher securely installed within reach of the driver
- All vehicles must be equipped with a 3-point factory seatbelt or 3-point FIA approved harness or better
EXTRA
-All vehicles must keep the top of the front windscreen free for the event window banner
- All vehicles must alloy room for an entrant number and sponsors door sticker
* Please note Refunds for cancellation or withdrawal of an Entrant will not be issued under and circumstance. The Entrant may replace their spot with another eligible driver subject to approval to Track Battle Pty Ltd.
