Joe, the way I see it, the FSM will spec a max standard bore (with whatever tolerances). Add 0.040" to that for your max bore. The FSM will likewise spec a max standard piston diameter. Add 0.040" to the for your max bore.

If you bore your cylinders to the limit of the rules and they wear to an illegal size you're SOL. I don't see any way around this.


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George Roffe
Houston, TX
84 944 ITS car under construction
92 ITS Sentra SE-R occasionally borrowed
http://www.nissport.com