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 - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
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