Quote:
Originally Posted by enkeivette
Big G. Yes SRP, can a piston really crack just from too much boost? That would explain why I never hear detonation when this happens.
Ron, I know... but the wall looked bad last time too, and it was just streaked aluminum. Well see. If I clean it and my fingernail catches, I might pull it out to bore. Might get a new set of pistons too if the SRPs won't handle boost. They are forged though, strange. I don't see how one forging could be weaker than another.
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It depends on the alloy used. Most SRP pistons are 4032 which is a higher silicon content aluminum that is strong and has good wear characteristics but is very brittle. Pistons forged from 2618 are generally considered a better choice for higher performance pistons since it is a much tougher alloy and doesn't allow crack propogation as easily as 4032. 2618 does wear more quickly than 4032.