Join Date: Jan 2004
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Re: Engine blow-by and possible remedy
Having your Cylinders bored 30 over and installing new pistons and rings will solve your blow by issues. If you are going to have you whole engine apart you might want to think about getting the crank turned and putting in new rod and main bearings, along with anything else you might need, you will end up with an engine that is tighter, runs better, consumes less oil, and will last much longer.
Carbuerator, and ignition upgrades will work fine with an overbored engine. My 258 is .040 over. I put new pistons, rings, and bearings in it, along w/ a head job (and a lot of other parts) and it excelent great now and has very minimal blow by ( a very small amount can be expected even w/ a rebuilt motor).