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Deck
I have looked at the factory dimensions for a long time on virgin engines and have found 1 mm to be the target, The setups we design on custom rod lengths,custom pistons etc.. all are designed for .040 in neg. deck. I have seen some unusual deck hgts. on the 935 and early 962 air cooled engines that fall into the .070 range, but they are a different animal. If you reverse engineer the stock factory combos pour all the vols. and change the deck hgt. values you will find that the range of .040 gives you the C/R that is in the spec books, now if you add another .015 plus to that deck it can change the C/R by 1/2 a point.
Mike Bruns JBRacing.com
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The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago.
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