The Rotorway RW133 is a piston engine designed for use in helicopters and homebuilt aircraft.
The RW-133 was developed in 1979 as an all-new piston engine for amateur-built aircraft, including a new crankcase oil system. The helicopter version features a dry sump oil system and a turbocharger option increasing power to 160 hp (119 kW).[1] All components of the engine are cast and manufactured at RotorWay Foundries, except the Mallory Ignition and Dell'Orto carburetor.[2]
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