The Packard Merlin is an interesting story. The famous Rolls Royce Merlin was widely used in allied fighters and bombers during ww 2, but many parts where manua

The Packard Merlin is an interesting story. The famous Rolls Royce Merlin was widely used in allied fighters and bombers during ww 2, but many parts where manually fitted. When licensed to the American auto manufacturers to mass produces, they tightened up the specifications and changed the things like the bearings. https://en.wikipedia.org/wiki/Packard_V-1650_Merlin https://en.wikipedia.org/wiki/Packard_V-1650_Merlin