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(q) Owners of vehicles must make individual arrangements with the track Steward, or qualified Speedway New Zealand Official to inspect, certify and seal each individual motor before the vehicle can be raced. NO SEAL, NO RACE. Engine reconditioners certificates are not acceptable. (r) All motors must be drilled with holes through two sides of the sump in readiness for sealing by a Speedway New Zealand official. (s) Any engine inspected and found to contravene the rules will be declared an illegal engine. Refer Section G11-3 Technical Exclusions. T12-2-18 Inlet Manifold (a) Four-barrel inlet manifolds are not permitted. Unused or unwanted holes may be welded up or bunged/plugged. (b) This clause applies to an engine originally fitted with a carburettor manifold: (i) The original V6 or V8 Carburettor manifold must be OEM for the engine being used. (ii) The OEM manifold may be reduced in height only. (iii) No other material of any kind may be added or removed from the interior or exterior of the OEM manifold. Except: (iv) The OEM manifold may have a one-piece acceptor plate 25mm maximum thickness welded or bolted to the inlet manifold. (v) The said acceptor plate hole must be square edged. (vi) Where no OEM two-barrel carburettor manifold is made the original manifold may have inlet manifold material removed from directly below the restrictor plate hole. (vii) The approved restrictor plate must be fitted above the said acceptor plate if fitted. (viii)One adapter plate 35mm maximum height may be fitted if required above the Restrictor plate and below the carburettor. (ix) The inlet tract of the carburettor - adapter plate - restrictor plate - acceptor plate must be in one vertical plane. (c) This clause applies to Flat 4, Flat 6, V6 and V8 engines originally fitted OEM with EFI multi-point injection manifolds; (i) The inlet manifold must be OEM for the engine being used, i.e. no Ford 221 engines use a multi-point EFI manifold. (ii) The OEM manifold may be reduced in height only. (iii) The inlet throttle body assembly must be removed; inlet manifold must be totally sealed off at throttle body area. (iv) No other material of any kind may be added or removed from the interior or exterior of the OEM manifold, except that: (i) The OEM manifold may have a one-piece acceptor plate 25mm maximum thickness welded or bolted to the inlet manifold. (ii) The said acceptor plate hole must be square edged. (v) The approved restrictor plate must be fitted above the acceptor plate if fitted. (vi) One adapter plate 35mm maximum height may be fitted if required, above the Restrictor plate and below the carburettor. (vii) The inlet tract of the carburettor - adapter plate - restrictor plate - acceptor plate must be in one vertical plane. (viii)The base face edge of the carburettor must be no more than 130mm from the top of the nearest inlet port. Except flat 6 engine has no height restriction but must comply with clauses 1-7 above.

2010 ELECTRONIC RULEBOOK

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2010 NZ Speedway Rule Book  

2010 NZ Speedway Rule Book

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