Quote:
Originally Posted by Spilner521
High compression pistons and the 086 head don't mix unless you also plan to run C16 on a daily basis. It's either one or the other and then you'll need to use 91 or 93 octane, whichever one is the highest you can get. Also, when you raise the compression, boost is pretty much out of the question.
So you can A) raise the compression with either the 086 head or high compression pistons and go all motor or B) keep stock or drop compression and go with boost.
I'm not trying to steer you away or anything, but the 086 head is not the hands down answer to a high flowing head. Getting the stock head ported will provide much better flow than the 086 and you won't have to worry about all the problems with high compression or thicker head gaskets. There's also other cam options out there, so you're not limited to only the HO or secret cams.
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The 086 head stock will out flow a 2.4 ported and polished, check the flow numbers.