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Quote:
Originally Posted by scooder
If I recall correctly they will generaly go 0.060" over 3 3/16". I think Walt has taken some of these out to 3 5/16".
Just to clarify, were talking 21A here, no round water hole in the middle?
I'd have thought, if you bore just enough necessary for a good bore, you should be fine. Have you measured to see whats needed?
Martin.
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Those 40-42 221 engines with the tin can .040 wall sleeves, I remove the sleeves so now you have an ,080 over bore, I bore them another .045 to 3-3/16 and use std. 8BA pistons. I wouldn't go to 3-5/16 that's 1/4.in oversize. BUT, if I had one that was already 3-3/16 and needs a little clean up I'd probably go another .030 or might get brave and go .040 Walt