T11-16-11 Fuel System (a) Two return springs must be fitted to the induction throttle shaft anchored at separate mounting points. (b) The fuel system may be modified, but must comply with the following: (c) FUEL & FUEL TANKS Fuels (i) Petrol is restricted to commercially available products as supplied by and defined in the New Zealand Oil Companies Petroleum Products Specifications and Regulations 2003. (See SNZ website www.speedway.co.nz); (ii) Methanol fuel, with the same specifications as that supplied by recognised NZ Oil companies, is allowed, regardless of source. Refer T8-3 for fuel specifications. (iii) Avgas 100 will comply with ASTM D910 and DEF STAN 9190 (DERD 2485) specifications www.speedway.co.nz; (d) Fuels are permitted to contain commercially available lubricants as submitted to SNZ for identification and approval. (e) Fuel blending is not permitted. The addition of Toluene to fuels is not permitted. The addition of material to fuel or intake air to increase available oxygen is strictly prohibited. Such materials include oxygen, water, nitrous oxide, nitro methane, nitro propane, propylene oxide and nitropane etc. (f) All fuel is subject to testing at any time, if fuel is found to deviate from the approved fuel specification it will be considered illegal. (g) The use of fuel outside of specifications as described in T8-2 or blended fuel, will be declared an illegal fuel, Refer Section G113 Technical Exclusions. (h) Approved Fuels Methanol, Racing Fuel #5, Avgas 100, Petrol (i) Fuel Descriptions (i) Methanol/Racing Fuel #5: .7956 to .7988 @ 15 degrees 106 Motor Octane (ii) Petrol/PULP: .7347 to .7695 @ 15 degrees 96 Motor Octane (iii) Avgas (Racegas):â€“ no blending of fuels allowed: .6695 to .6985 @ 15 degrees 100 Motor Octane (j) Fuel Tanks Fuel tank to be 55 litre maximum capacity. (i) All vehicles will be fitted with one fuel tank, the tank must be fitted with an SNZ approved bayonet, screw type, or flush mount fuel cap; no radiator type caps are permitted. (ii) All fuel tanks must be securely mounted within chassis and rollcage material. If outside the line of the rollcage a frame to protect the fuel tank must be made of minimum rollcage brace material. (iii) The fuel tank must have welded seams and fittings and be constructed to a professional standard. Soldered tanks and fittings are not permitted. (iv) The fuel tank must be located behind the engine firewall. (v) Pressurized fuel tanks are not permitted. (vi) All vehicles to have a suitable breathing system so that fuel will not escape during a roll over. (vii) Fuel vent pipe must avoid inboard disc braking systems and be at least 600mm away from exhaust pipes. (viii)The addition of safety foam baffling to fuel tanks is highly recommended. NOTE: the tank will need to be filled with at least 80% foam to be effective.
2010 ELECTRONIC RULEBOOK
2010 NZ Speedway Rule Book