gas motorsport street 289

Updated: 25/6/10 2:30pm

As of the 24/2/09 Street 289 will run under the ANDRA Oz Mod Rules as voted by the racers in early 2009.

Below are the 2009/2010 ANDRA Oz Mod Rules for your reference. If you need any clarrification on these rules please connect ANDRA Head Office on (08) 8271 5355 or email Steve Power via steve.power@andra.com.au

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3.15.3 OZ MODIFIED

OZ Mod is intended for street appearing production cars using standard chassis with limited rear tyre size. Engine swaps and power adders are permitted.

Note: Except where permitted by class regulations, any competitor found to be employing reactive traction systems or devices by any means will be subject to a twelve (12) month suspension and a fine of $15,000.

Class Designation: - ST, followed by driver’s competition number.
Proposed body dimensions for a vehicle competing in this bracket, along with standard dimensions for that model must be forwarded to the ANDRA Office by the competitor, before competing, or prior to the issue of, or renewal of the vehicle log book. (Excludes Sport Compact Group run events)

Minimum weights:
- Triple Rotor / 6 cylinder (4.0 litre max) 2400lbs minimum
- Twin Rotor / 4 cylinder 2100lbs minimum
(Minimum weights include driver and are for record setting purposes only at SCG events)

Street 289 competes under a DYO formate at SCG events unless otherwise advised.

RWD cars only. No full chassis or back half cars allowed. Slick tyres with a
maximum size of 28” x 9” permitted.

CLASS REGULATIONS

Engine
1.1 Engine: Engine swaps permitted. Any production 4, 6 cylinder or rotary engine permitted. Maximum 2 power adders. Dual stage nitrous systems or multiple superchargers/turbochargers will be counted as one power adder each.

1.2 Exhaust: Open exhaust permitted, except where prohibited by track rules. All open exhaust outlets must terminate below sill panel level, directing gases upward or to the rear. All turbocharged vehicles not required to use mufflers 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 ANDRA General Regulations 4.1.4

1.3 Fuel: Ethanol: methanol or petrol only. Refer ANDRA General Regulations
4.1.6 and 4.1.7.

1.4 Fuel System: Refer ANDRA General Regulations 4.1.8.

1.5 Liquid Overflow: Refer ANDRA General Regulations 4.1.9.

1.6 Nitrous Oxide: Commercially available nitrous oxide permitted, including for supercharged and turbocharged engines. Nitrous bottle(s) in driver compartment must be equipped with a relief valve and vented outside of driver’s compartment. Hoses from bottle(s) to solenoid must be high-pressure steel-braided. Commercially available, thermostatically controlled, blanket-type warmer accepted. Any other external heating of bottle(s) prohibited. Refer
ANDRA General Regulations 4.1.12.

1.7 Lower Engine Containment Device: Required on all piston-engine cars using power adders quicker than 8.99 seconds (1/4 mile) / 5.70 seconds (1/8 mile). Refer ANDRA General Regulations 4.1.10.

1.8 Supercharger, Turbocharger: Permitted. Maximum rotor diameter of
178mm (7 inch) for screw superchargers. Refer ANDRA General Regulations
4.1.14

Driveline
2.1 Driveline: Driveshaft loop required on all cars. Refer ANDRA General
Regulations 4.2.4.

2.2 Flywheel Shield: All manual-transmission-equipped cars running quicker than 10.99 must have a flywheel shield labelled as meeting minimum SFI Spec 4.1 or 9.1. Applications for which an SFI Spec 4.1 or 9.1 flywheel shield is not available may use an SFI Spec 6.1 or 9.1 flywheel shield from another application, attached to a motor plate that is attached to the engine block at all available bolt holes, or a fabricated shield made of 1/4-inch-thick steel, surrounding the bell housing 360 degrees, extending 1 inch forward and 1 inch rearward of the rotating clutch assembly. Shield must be securely attached to frame or frame structure; may be multi-piece.

2.3 Transmission, Automatic: Non-original automotive transmission permitted
without weight penalty. Trans brake permitted. Refer ANDRA General
Regulations 4.2.1, 4.2.2 and 4.2.8

2.4 Transmission, Manual: Any transmission permitted. Automated, timer-type, air-shifted, pneumatic, electric, electronic, hydraulic, etc. shifting mechanism prohibited; each individual shift must be a function of the driver and controlled manually. (Driver must pull the lever). Clutchless transmissions up to five forward speeds permitted in all Super Compact classes permitted to use manual transmissions.

Brakes & Suspension
3.1 Brakes: Four-wheel hydraulic brakes mandatory. Carbon fibre brake rotors
prohibited. Refer ANDRA General Regulations 4.3.1

3.2 Steering: Aftermarket steering gear permitted. Refer ANDRA General
Regulations 4.3.3.

3.3 Suspension, Front: Upper mounting point for strut assemblies must be in the factory location. Adjustable caster/camber pillow ball mounts are permitted. Lower control arm may be strengthened provided factory-mounting points to chassis are maintained. Lower mounting point for strut assembly may be modified for improved caster or camber. Strut tower braces, lower tie bars, sway bars, and limit straps are permitted.

3.4 Suspension, Rear: Control arms may be strengthened or replaced. Original suspension mounting points can be used. Suspension mounting points can be fabricated using material of the same gauge as originally fitted, as a minimum. Strut tower braces, lower tie bars, sway bars, limit straps, and camber kits permitted. Rear suspension must maintain minimum shock travel of 25mm (1 inch). All rear suspensions must use at least one working shock absorber per wheel. Traction bars/devices permitted; must be bolt on ONLY. Ladder bars and four bars permitted.

3.5 Wheelie Bars: 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
4.1 Ballast: Permitted. Refer ANDRA General Regulations 4.4.2.

4.2 Chassis: OEM chassis rails, with complete OEM floor pan and firewall must be retained with any alterations approved by ANDRA. Sub-frame alterations are also subject to ANDRA approval. Tube chassis prohibited. A maximum of two front to rear frame strengthening members, maximum 50mm x 75mm (2 x 3 inch) and fully welded where they pass through the floor, may be used to connect existing subframes. Enlarged wheel tubs to accommodate maximum 28” x 9” tyre permitted. Rear tyres must not protrude outside the body work. Engine must be in OEM location for body used. FWD to RWD conversions prohibited. Non-OEM tubing in front of firewall prohibited except to tie shocker towers to roll cage. Refer ANDRA General Regulations 4.4.3, 4.4.7.

4.3 Ground Clearance: Refer ANDRA General Regulations 4.4.4.

4.4 Parachute: Refer ANDRA General Regulations 4.4.6.

4.5 Wheelbase: Must retain original wheelbase for body used, plus or minus 1
inch. Maximum wheelbase variation from left to right is 1 inch.

Tyres & Wheels
5.1 Tyres: Only racing slicks permitted. Maximum tyre size of 28” x 9”
permitted. Cars quicker than 12.50 (1/4 mile) using independent front
suspension and cross ply rear tyres are not permitted to use radial front
tyres.

5.2 Wheels: Must be automotive-type wheels suitable for street or racing use.
Minimum wheel diameter 13 inches unless originally equipped with smaller
wheels and vehicle is equipped with original engine. Wheel studs must be
threaded into hex portion of lug nut a distance at least equal to the diameter
of the stud. Spindle mount wheels permitted. Refer General Regulations
4.5.2

Interior
6.1 Interior: Upholstery, headliners, carpets, OEM dashboard, etc. optional. If
OEM dashboard is removed, must be replaced with fabricated or aftermarket
unit to provide finished appearance. Must be equipped with one seat minimum
for driver, properly installed. Holes, slots, or other openings in floor and/or
firewall prohibited.

6.2 Window Net: Refer ANDRA General Regulations 4.6.2.

Body
7.1 Airfoils / Wings: Single fixed rear airfoils are permitted on supercharged/
turbocharged/nitrous sedans and derivates. The airfoil must be securely
mounted, and may be no wider than the widest part of the vehicle body.
No part of the airfoil may extend past the widest part of the vehicle body,
be higher than the highest point of the roof or extend more than six inches
behind the rearmost part of the body, not including bumpers or parachute
packs. Maximum surface area, including all non vertical surfaces of structure,
of 5484 sq cms (850 sq ins) Adjustment or movement of any aerodynamic
device during a run is prohibited. One spill plate permitted on each side to a
maximum of 774 sq.cms. (120 sq ins).

7.2 Body: Any compact sedan, derivative or light utility vehicle that has not been produced with an engine of more than six cylinders permitted. OEM body shell must be retained. Spare wheel well removal permitted; replacement material must be same gauge steel as OEM floor material. Minimum of 2 functional doors. Modifications altering the contour of the body are not permitted. Original grille must be retained, but may be covered from behind to prevent air from passing through. Removable panels may be replaced with exact replicas in fibreglass or composite but one piece bonnet/guard assemblies are prohibited. OEM glass may be replaced with Lexan or other shatterproof material, minimum thickness 3mm (1/8-inch).
7.3 Firewall: OEM firewall mandatory. Minimum clearancing of firewall permitted for exhaust and engine accessory clearance.

7.4 Floor: OEM floor pan required. The transmission tunnel may be removable forward of the front tailshaft universal joint where the original contour is maintained. The section must be no larger than required to give 50mm (2 inches) clearance to either side and the top of the transmission, when viewed from above the transmission tunnel (linkages not included). Minor clearancing of floor behind rear axle permitted for exhaust clearance. The notching of OEM floor pans is only permitted for suspension clearance. Rear floor (boot section) may be cut to permit rear shock absorber mounting points that protrude through the rear floor.

7.5 Spoilers: Factory fitted aerodynamic devices for the body used, fitted in the original location are acceptable. Fabricated rear spoilers to be no longer than 355mm (14 inches), measured from the body line to spoiler transition point to the tip and must not be moulded into rear deck lid. Must be painted to match paint scheme. Must be no lower than horizontal. Maximum overall height of spill plates 100mm (4 inches), attached so that a maximum of 50mm (2 inches) extends above the top of the spoiler. Roof mounted spoilers prohibited. Any adjustment or movement during a run prohibited. Refer Definitions.

7.6 Street Equipment: Full stock headlights and tail lights must be retained, but need not be operative. One headlight may be removed for air intake. Refer ANDRA General Regulations 4.7.7.

Electrical
8.1 Batteries: Batteries must be securely mounted; may not be located in driver compartment unless sealed off per General Regulations. Refer ANDRA General Regulations 4.8.1.

8.2 Ignition: Any ignition system permitted. Refer ANDRA General Regulations 4.8.3.

Support Group
9.1 Computer: Vehicle management systems prohibited. Electronic fuel injection permitted. Refer General Regulation 4.9.2.

9.2 Data Recorder: Permitted. Refer ANDRA General Regulations 4.9.3.

9.3 Fire Extinguisher System: Permitted; must be securely mounted. Refer ANDRA General Regulations 4.9.4.

9.4 Tow Vehicles: Only permitted where use of a parachute is required; however, ANDRA may, at random intervals, require race vehicle to return to scales under its own power. Refer ANDRA General Regulations 4.9.9.

9.5 Warm Up Procedure: Refer ANDRA General Regulations 4.9.11

Driver
10.1 Credentials: All drivers must have a UDL as a minimum. Refer Section 1 -
Credentials.

10.2 Driver Restraint System: Refer ANDRA General Regulations 4.10.11.

10.3 Helmet: Refer ANDRA General Regulations 4.10.8.

10.4 Neck Collar: Refer ANDRA General Regulations 4.10.10.

10.5 Protective Clothing: Refer ANDRA General Regulations 4.10.10.