Mearns Hire is an Australian earthmoving company known for their Caterpillar “D12R” or “Superdozer”. The company creates the unique dozer for ploughing tough dirt and cutting roots. Each Superdozer starts with a Caterpillar D11N or D11R powered by a 34.5 L 3508 V8 making 770-915 hp. Mearns Hire removes the factory V8 and stretches the chassis. In the increased engine bay space they swap a 51.8 L 3512 V12 producing 1250 hp (919 kW). These motors are usually found in huge 785 mining trucks. They retain the D11 transmission but use the mining truck’s torque converter and lockup clutch system. On top of the cabin they mount a large cooler for hydraulic and transmission fluid.
Source: Mearns Hire FB page and Mearns Hire
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