I was just wondering how much you can bore out a 125, without going over the limit AMA has set for the 125 class? Also how much can you mill down a head? i want to bring up my compression ratio, but i dont want to take off to much. Thanks for any help.
80 over is the largest you can go still being AMA legal and what type of gas do you plan on using, because that is a determinant in how/if to mill the head.
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