bomber

I have been searching and doing a lot of reading on max bore sizes for the H22A. The general rule of thumb for motors that are not strictly race seems to be:

87 = stock
89 = max for turbo apps

I was thinking about going .40 over (88mm) to split the difference. I figure I might as well bump up the bore a little bit since I have to sleeve anyway, but I would also like some rebuild room down the line.

I have also been reading about compression ratios. I think I would like to drop the compression to around 10:1 or maybe even a bit lower. 9.5:1 would be ok too...but I want to stay away from the 8.x:1 stuff.

My problem is piston selection. I don't really want to run custom pistons (price, wait time) but H22A's dont seem to have too many choices.

CP Pistons = 9:1, 10:1, or 11.5:1 but stock bore only
JE Pistons = 9:1, 10:1, or 11.5:1 but stock bore only
Ross Pistons = B Series only?
Endyn = 87mm or 90mm only

Arias seems to be the closest match with 87.5mm and 9.7 compression.

So my question is, are there any pistons I am missing? Should I just give up on going with the 88mm bore and stick with 87? It seems like free displacement but if I have to pay for custom pistons it sure isn't going to be free.

If I do stick with standard 87mm I would have plenty of choices...who would be the best bang for the buck?

Thanks.

bomber

Should this be moved to Prelude forum?