Potez 8D

Potez 8D
Type	Eight cylinder air-cooled inverted V piston engine
National origin	France
Manufacturer	Société de Avions et Moteurs Henry Potez

The Potez 8D is the largest member of the Potez D series of air-cooled piston aircraft engines which share several common features. It is a supercharged eight cylinder inverted engine with a take-off power of 373 kW (500 hp).

In the 1930s Potez planned a series of new engines to replace their Anzani-derived radial engines. The Potez 4D, a four cylinder inverted inline engine ran before World War II but did not reach production until the late 1940s, when it was joined by another inverted inline, the six cylinder Potez 6D, and the eight cylinder inverted-V 8D. The D-series engines had much in common, most obviously sharing pistons and cylinders, with the same stroke, bore and valve gear. The larger 8D required an enhanced though similar lubrication system and different connecting rods because of its 90° V layout.

A 8D.32 powered the first prototype of the Potez 75 ground attack aircraft but budget cuts in 1957 led to the cancellation of an order for 15 pre-series and 100 series machines.

Data from Jane's All the World's aircraft 1956-57 pp.431-2

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