Zvezda M503 maritime radial diesel engine - photos

[Altair]

Zvezda M503 maritime radial diesel engine.

Fullsize image: https://s3-us-west-1.amazonaws.com/h...e_fullsize.jpg


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[trigger]

Internal lubrication must have been tough to design....

[jimfols]

That is quite a Lump.

oldmachinepress.com/2016/09/05/yakovlev-m-501...

Sep 05, 2016 · Its compression ratio was 13 to 1. The M503’s maximum output was 3,943 hp (2,940 kW) at 2,200 rpm, and its maximum continuous output was 3,252 hp (2,425 kW) at the same rpm. The engine was 12.14 ft (3.70 m) long, 5.12 ft (1.56 m) in diameter, and had a dry weight of 12,015 lb (5,450 kg).