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Pratt & Whitney R-985-AN-7

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Manufacturer	Pratt & Whitney
Popular name	Wasp Junior
Configuration	9-cylinder Radial
Power (standard)	450hp
Power (takeoff)	450hp
Production	0

Displacement	16.16991995
Bore	0.1317625
Stroke	0.1317625
Compression ratio	6:1
Diameter	1.162
Length
Weight	296

Valvetrain
Fuel system
Fuel type	80/87 octane
Blower
Oil system
Cooling	Air cooled