Limited Modified Tractors

Limited Modified Tractors are those using engine(s) up to a maximum capacity of 351 cubic inch. The engine must employ a flat tappet camshaft and be naturally Aspirated, no blowers or turbo charging. The engine(s) may be up to 60 thou rebored. All engines are limited to two valves, one spark plug per cylinder. Weight classes are:

2500 kg

2900 kg

3400 kg, excluding driver

No portion of a limited modified tractor may exceed 14 feet forward of the centre of the rear wheel, including removable ballast. Maximum width of vehicle is to be 8 feet at its widest point including ballast.

Legal fuels are restricted to pump fuels (Unleaded Petrol (ULP), Premium ULP and Aviation Fuel (AV Gas) is allowed and no additives may be added thereafter).

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