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dave, i didnt say compression pressure and compression ratio are the same thing.
what i did say is that he should chek his compression after the engine is broke in.
and, compression pressure and ratio are almost interchangable meanings. because one directly effects the other. technicly speaking....
things like atmosphere, starter speed etc should not really effect compression pressure unless your engine is bad.
i get the same 185PSI on all 4 cylinders weither i turn it with the starter, or turn it by hand with a socket and wrench on a test stand. turning it by hand is pretty slow too. and as far as atmosphere, most people dont live in the andies or anything and even if they did it would only lower the comp a couple psi at most.
just stuff i learned over the years from personal experence...
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