Some of the high diesel compression ratio is just to get the engine started while cranking. Some of the old engines such as the Lister LS series used high compression to start and low compression to run. The direct injection gassers are into the 11 to 1 range now. That is near diesel.
Contrary to popular belief, high compression does not make power. It's the pressure difference between compression and combustion pressure where effective working pressure is derived. 600psi compression and 1100psi combustion does no more work than 200psi compression and 700psi combustion.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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