Potez 4D

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Potez 4D
Aircraft engine at Wings Over the Rockies Air and Space Museum (4283386906).jpg
A Potez 4D on display at the Wings Over the Rockies Air and Space Museum
Type 4-cyl. inverted air-cooled piston engine
National origin France
Manufacturer Société des Avions et Moteurs Henry Potez
Major applications Nord 3202

The Potez 4D was a four-cylinder, inverted inline aircraft engine. It was first built shortly before World War II, but did not enter full production until 1949. Like the othe D-series engines, the cylinders had a bore of 125 mm (4.9 in) and a stroke of 120 mm (4.7 in). Power for different models was in the 100 kW-190 kW (140 hp-260 hp) range.


127 kW (170 hp)
119 kW (160 hp)
179 kW (240 hp)
164 kW (220 hp)
119 kW (160 hp)
194 kW (260 hp)
194 kW (260 hp) 4D-34 with aerobatic oil system


Specifications (Potez 4-D 01)[edit]

Data from Jane's All The World's Aircraft 1953-54.[1]

General characteristics

  • Type: Four-cylinder air-cooled inverted inline engine
  • Bore: 125 mm (4.92 in)
  • Stroke: 120 mm (4.72 in)
  • Displacement: 5.85 L (352 in³)
  • Length: 1,207.5 mm (47.5 in)
  • Width: 510 mm (20.1 in)
  • Height: 668.5 mm (26.3 in)
  • Dry weight: 143 kg (314.6 lb)


  • Valvetrain: Two valves per cylinder with sodium cooled exhaust valves
  • Fuel system: One Zenith carburettor
  • Fuel type: 80 octane minimum
  • Oil system: Dry sump with one pressure and two scavenge pumps
  • Cooling system: air-cooled


See also[edit]

Comparable engines
Related lists


  1. ^ Bridgman 1953, p.328.


  • Bridgman, Leonard (ed.) (1953). Jane's All The World's Aircraft 1953-54. London: Jane's. 
  • Bridgman, Leonard (ed.) (1961). Jane's All The World's Aircraft 1961–62. London: Sampson Low, Marston & Company, Ltd. 
  • Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens. p. 107.