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Motosacoche Motorcycles

Motosacoche 1930 Type 409 500cc IOE Engine

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The Type 409 has a M.A.G. IOE ( Inlet over Exhaust) engine of 500 cubic centimetres.
IOE

Inlet Over Exhaust

Aka the F-Head, the IOE system was widely used in early four-stroke engines. Italiano: valvole di aspirazione sopra quelle di scarico; contrapposte.
Courtesy Bretti Brothers