Compression Ratio and Boost Query

thrustbucket said

You are saying what I was originally thinking. Obviously, just forcing air into a junkyard 318 and changing nothing is gonna end poorly. All things being equal, with proper controls, I think one could boost to the point where the internals, (mainly the crankshaft in this case) are the limitation.

I will check out that read. Thanks for the info. I have said for a long time that the best performance part one can buy is usually a book..

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The crank in a 318 is the last piece of the puzzle to worry about. Even the cast cranks can survive at well over stock power. It’s the fragile cast pistons with very small ring gaps that get most people in trouble. They break ring lands pretty easily because the do NOT tolerate detonation at all. Rattle it even a little bit and they’ll let you know. Next will be the head gaskets, (I explained already how to help that) and then the rods bolts.