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Green C.4




The Green C.4 was a British four-cylinder, water-cooled aero engine that first ran in 1908, it was designed by Gustavus Green and built by the Green Engine Co and Aster Engineering. The engine was one of two Green designs to win a government prize.


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Type: 4-cylinder, inline, upright piston engine
Bore: 4.13 in (105 mm)
Stroke: 4.73 in (120 mm)
Displacement: 253.44 cu in (4.158 L)
Length: 39 in (991 mm)
Width: 16 in (406 mm)
Height: 28 in (711 mm)
Dry weight: 184 lb (83 kg)
Valvetrain: Gear driven overhead camshaft, two valves per cylinder
Fuel type: Petrol
Cooling system: Water-cooled
Reduction gear: Direct drive, right-hand tractor
Power output: 52.5 hp (39 kW) at 1,460 rpm (maximum power)
Specific power: 0.2 hp/cu in (9.37 kw/L)
Power-to-weight ratio: 0.28 hp/lb (0.46 kW/kg)



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