GRADE RULES

PRODUCTION

C GRADE

SUPER PRODUCTION

B GRADE

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NORTHLAND SPEEDWAY CHAMPS - BOARD OF CONTROL

RULES - C GRADE

 

IF IT IS NOT MENTIONED THEN IT IS NOT PERMITTED

 

ELIGIBILITY:

The car chosen for C Grade must be a standard production model of a type sold new. A minimum of 200 vehicles of that model must have been manufactured. The responsibility lies with the competitor for proof. Where a vehicle is sold with a larger than allowed engine it is permitted to fit a smaller engine of the same configuration and make, (ie. 2 litre Cortina may be fitted with a 1600 Cortina motor.) C Grade may have a maximum engine size of 2000 cc (4 cylinder only.) or 1600 cc fuel injection. 1600 MAX BORE.

Front or rear wheel drive vehicles only. Right hand drive models only.

IF IT IS NOT MENTIONED THEN IT IS NOT PERMITTED

BOARD OF CONTROL HAS THE RIGHT TO REGRADE A CAR
BODY Only saloon, station wagon, coupe, or hatchback models are allowed. Soft tops, convertibles, sports cars designed with a removable roof, utilities, trucks, four wheel drive and four wheel steer vehicle are not permitted. The body must be in a reasonable condition and safe to race in the opinion of the scrutineer.

The only alteration to body shape may be to cut away guard arches for easier wheel changing and inner door panels to allow for easier panel beating. All glass, lights, chrome strips, projecting door handles, metal badges, and any inflammable material must be removed with the exception of the internal rear vision mirror, gauges, drivers and passenger seats where fitted.

All potentially dangerous sharp objects must be removed or projected against.

DOORS must be welded, bolted or adequately secured to the scrutineer's satisfaction

WINDOW openings must be large enough to allow easy access to the interior of the car.

Must have window net.

 

FIREWALLS to be fitted to front and rear to completely isolate the driver from the engine and the fuel tank. All holes to be plugged or covered. All pipes and wires passing through these firewalls to be guarded against chaffing.

 

BONNET AND BOOT lids must be securely strapped, pinned or quick release fasteners.

SEAT AND HEADREST must be securely mounted and have suitable padded headrests, minimum 280mm x 150mm x 3mm steel either as part of the seat or mounted in the correct position on the roll cage, as described in the Speedway Control Board Rule Book. Fiberglass seats must have a 3mm steel support plate fixed underneath and behind the seat.

SEAT BELTS shall be of a fall harness quick release type. Five point mounting,(i.e. shoulder, lap and crotch strap) 75 mm minimum width. They must be securely mounted with loop guards, through the headrest. The seat belt must be approved by the scrutineer for type and condition and must fit the driver, and passenger where applicable. It is strongly recommended that 75mm (3 inch) seat belts be fitted when renewing or replacing belts, as these will become standard, and are already a requirement on many tracks.

 

BALLAST in any form is not permitted, (i.e. water in tyres, sandbags in boot, filling doors etc.)

 

 

STEERING BOXES AND RACKS must be original equipment fitted. No after market quick racks or quick steering boxes.

 

MESH SCREENS must be fitted in front of the driver to cover at least half the window, maximum of1OO mm mesh, (smaller mesh is recommended.) A centre vertical support bar must be fitted to any the edge of the mesh. Where a passenger seat is fitted, mesh must cover me whole window. Mesh must be minimum 6-gauge wire and meet the approval of the scrutineer.

An easily removable net must be fitted to side window on driver’s side (and passenger side if applicable), or approved are restraints must be used.
Note; the use of steel mesh on side windows is not permitted as it can distort and jam in an accident.

 

BUMPERS Both front and rear bumpers may be fitter and may not be reinforced, apart from one 40mm nominal bore pipe behind the original bumper. The pipe must not extend past the chassis rails by more than 30mm. It may go round the comers. The purpose of the bumper is to minimize damage in the event of a minor accident. It is not a crash bar.

 A tow hitch must be fitted front and rear, and radiator protection of max 25mm pipe may be fitted no more than 150mm above the bumper and no wider than 40mm bumper reinforcing bar.

The bumpers must have two mounting points only, in the original mounting positions.

 (SEE ILLUSTRATION.)

ROLL CAGE AND LEG PROTECTION a roll cage to the minimum of the standard illustrated must be fitted to all cars. It must be of 40mm steam pipe 3.25 wall thickness or better, or RHS.

 Aluminum is not allowed. Side impact intrusion must be prevented by 3mm mill plate fitted from the rear of the drivers seat (and passengers seat if applicable), to the front firewall.
Roll cage must have diagonal bracing, min 25mm fitted immediately behind the seat from passenger side top to driver’s side bottom. If a passenger seat is fitted a second diagonal from passenger side top to driver’s side bottom must be fitted. The roof plate must have 50mm clearance between it and the driver’s helmet, and a roof plate must be fitted to both sides of the vehicle if a passenger seat is fitted.

 

MOTORS Only standard motors as factory fitted to that make and model are allowed.

 Motors and gearboxes must be in the original position, but may be solid mounted.

Fuel injection is permitted but must be factory fitted.

No supercharging is permitted. No aftermarket bolt ons. Motor may be balanced, but no modifications are permitted unless specifically mentioned elsewhere in these rules.

Specifically there shall be no lightening of flywheels or any parts, porting and polishing of heads, conrods etc, stroking of cranks, or piston alteration.

Only standard factory parts as fitted to that motor shall be used including camshafts, inlet manifold and carburettor. No modifications to carbs, after-market carbs or manifolds permitted.
Camshafts must be original specifications for that motor and vehicle.

No variable cam timing or lift, e.g. no VVTI.VTEX.VVTX,e.g. engines.
Where a fuel-injected motor is converted to run a carburettor, only an OEM manifold and matching carburettor may be used. This need not be off the same model of motor, but must be made by the manufacturer, and must fit without modification.

The approval of the scrutineer must be obtained for any such alteration.

A free flow exhaust manifold or extractors may be fitted.
The exhaust must extend under me car past the rear of the drivers seat. It must be securely fastened and fitted with a muffler the noise level must be acceptable to the scrutineer.

COOLING Fan may be replaced with electric fan.

 

RADIATOR may be fitted anywhere in the vehicle, as long as it is safe, and may be replaced by a larger capacity radiator, but the driver must be protected from scalding should a leak or burst occur. All joints or rubber fittings in the piping and the radiator it self must be shielded from the driver.

The radiator must be fitted below window level.

 

ELECTRICAL COMPONENTS:

BATTERY: must be securely mounted inside a 1.2 mm min steel, 2 mm min aluminium or steel framed wooden box- Such boxes must be fitted with secure lid suitably insulated from the battery terminals.

An ISOLATING SWITCH clearly marked "ON" and "OFF' must be fitted within easy reach of the driver, and of crash rescue team.

 

WIRING must be protected against damage or chafing. It is recommended that all unnecessary wiring be removed.

 

STARTER the vehicle must be capable of being started by the driver.

 

FUEL Only standard pump petrol of no more than Aviation Gas octane may be used.

 No additives are permitted, with the exception of those additives specially manufactured to protect valves and valve seats against the use of unleaded petrol.

 

FUEL TANK must be welded steel construction no less that 18 swg gauge and no more than

22.5 liters (5 gallon) capacity, securely fastened in the boot of the car. It must have a screw on cap and an air breather that goes horizontally once around the tank then through the floor, protruding 50mm under the car.

Original fuel tank must be removed.

 

FUEL LINES must be steel or copper securely mounted inside the car. All joints or flexible lines must be approved fuel hose securely clamped no plastic fuel lines are permitted.

 Fuel filters must be steel. No plastic or glass filters permitted.

Fitting to be approved for pressure side of pump.

 

A FUEL TAP Clearly marked "ON" and "OFF" shall be securely mounted within easy reach of the driver and crash rescue team, and shall be no closer than 150mm to any electrical component.

 

SUSPENSION, WHEELS AND TYRES:

SUSPENSION must be as originally fitted to the vehicle, including sway bars. Alteration of caster and camber angles is allowed but only original parts may be used.

 All suspension and shock mounting positions must be in original positions, different springs may be fitted (lighter or heavier), and springs may be shortened.

The upper or lower suspension arms on the right front wheel may be lengthened or the suspension may be packed using non standard bolts and packing.

 

Any such alteration to the suspension must have the specific approval of the Scrutineer, and the resulting angle of the wheel must not exceed 10 degrees from vertical when the vehicle is measured on level ground with the driver seated. No after market shocks are permitted.

 

WHEELS must be of original standard size with the exception of the right front which may have an 8mm min centre or a 6mm min reinforcing plate welded in option or manufactured pressed rim as set out in rule 11.14 of the Speedway Control Board of NZ. General Rules and Regulations.

The wheel centre must remain as close as possible to the original position. No Mags are allowed.If original equipment, then an equivalent steel rim must be fitted. No widened, larger, smaller or after market rims permitted.

Right front wheel to be no more than 19 ml or 10 degrees camber.

Rims must be fitted to the car in the original position. No packing out of rim or brake drum is  permitted. No mismatched sizes (ie) 13" and 14" on the car at the same time.

 

TYRES only standard road tyres are permitted. No rally, racing, dirt, lug, snow, grooved slicks, or implement tyres are allowed- Grooving of tyres is permitted but must follow the original tyre pattern. All tread pattern grooves and cut grooves must not exceed 1Omm (3/8 inch.) All tyres must have sound casings. Maximum 205, exceeding outside line 50mm.

 

BRAKES Front and rear brakes must be fitted. All brakes must be in good working order with the exception of the handbrake.

 

DIFFERENTIALS must be standard to the model fitted. No locked or limited slip diffs are permitted. Dift ratios may be altered. If a vehicle is fitted with a limited slip diff an equivalent standard diff must be fitted.

 

DRIVESHAFT LOOPS must be fitted under the front of each drive shaft, within 150mm of the universal join.

 

RACING NUMBERS are to be painted on the front door panels on both sides, and on the roof in such a position as to be dearly visible to the lap scorer. They shall be black on a white background or white on a black background, and shall be min 380mm high and 50mm width.

The number choice must be approved and granted by the Club and Club Emblem K, WR, T or D.
ENFORCEMENT No vehicle will be allowed to race unless examined and passed as suitable by the Scrutineer at the commencement of each meeting.

The Northland Board of Control reserves the right to regard or handicap any vehicle.

 

Contacts:

President; Ken Crisp

Secretary; Debbie Beadle-Taylor 09-4012651

email beadletaylor@xtra.co.nz

Treasurer: Anita Sloot 021 782634

 

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