The Delta was a 12-cylinder inverted-V aircraft engine built by Isotta Fraschini prior to and during World War II. == Design and development == The Delta is a fairly rare example of a large air-cooled inline engine, which normally have cooling problems with the rearmost cylinders. It produced about 750 hp in common versions, although others were rated up to 900 hp.
The Delta was a 12-cylinder inverted-V aircraft engine built by Isotta Fraschini prior to and during World War II. == Design and development == The Delta is a fairly rare example of a large air-cooled inline engine, which normally have cooling problems with the rearmost cylinders. It produced about 750 hp in common versions, although others were rated up to 900 hp.
Source: Wikipedia "Isotta Fraschini Delta" · CC BY-SA 4.0
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