678/4 is a piston engine model used in aircraft.
Engine Family: piston
Fuel grade: 80
Bore: 82.5 millimetre
Compression ratio: 9
Cooling system: Air
Cylinder configuration: Horizontally opposed
Cylinder count: 4
Displacement: 1582 cubic-centimetre
Dry weight: 85 kilogram
Fuel type: Avgas
Max. continuous RPM: 4500
Max. continuous hp: 70 horsepower
Max. takeoff RPM: 4600
Max. takeoff hp: 75 horsepower
Stroke: 74 millimetre
ICAO: RW3
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