RotorWay RW133

RotorWay RW133
Type	Horizontally opposed piston aircraft engine
National origin	United States
Manufacturer	RotorWay International
Major applications	RotorWay Scorpion
Unit cost	$3,500 in 1979
Variants	RotorWay RW152

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). All components of the engine are cast and manufactured at RotorWay Foundries, except the Mallory Ignition and Dell'Orto carburetor.

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