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Continental O-190  / C75 / C85


Continental C-85


The Continental O-190 (Company designations C75 and C85) is a series of engines made by Continental Motors beginning in the 1940s. Of flat-4 configuration, the engines produced 75 hp (56 kW) or 85 hp (63 kW) respectively.

The two variants shared the same bore, stroke and compression ratio. The C85 produced ten extra horsepower by virtue of having a maximum permissible rpm of 2575 versus the 2275 of the C75.
The C75 was in production from 1943 to 1952 and the C85 from 1944 to 1970.


85 hp
177 ci
4 cylinder
Weight: 170 lb
A-65 but 188ci
tapered propshaft
Weight: 188 lb

C-85-8 with flanged propshaft.
C-85-8 with starter.
C-85-12 with flanged propshaft.
Military designation for the C75, C85 family of engines.
85 hp
177 ci
4 cylinder
Weight: 170 lb



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Type: 4-cylinder air-cooled horizontally opposed aircraft piston engine
Bore: 4.0625 in (103 mm)
Stroke: 3.625 in (92 mm)
Displacement: 188 in³ (3.1 L)
Dry weight: 180 lb (81 kg)
Fuel type: 80/87 octane avgas
Cooling system: Air-cooled
Power output: 85 hp (63 kW) at 2,575 rpm
Compression ratio: 6.3:1
Fuel consumption: 5.4 US gal/hr
Oil consumption: Maximum desirable 0.4 US quarts/hr



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