Question on combustion chamber variance

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Aug 9, 2005 | 08:49 PM

extreme01ta

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Staging Lane

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From: Wyoming

Question on combustion chamber variance

Hey guys here's the story. I had my heads milled Three times

. I wanted to take off .030 but the shop that did it couldn't get them smooth enough to seal so they tried again and I finally took them elsewhere and got them smoothed out to an ra of 9-15 so they should seal this time. any way I was cc'ing the chambers and on one head the smallest was 59cc and the largest on the other end of the head is 61cc is this enough of a differance to cause a problem? if so what kind of problem? is there anything I can do to correct this issue? I am calculating cr right now thanks for any input.

Aug 10, 2005 | 02:47 AM

PREDATOR-Z

TECH Senior Member

Joined: Mar 2004

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From: BFE

a 2 cc difference is too much, see if you can hand blend the smaller ones and open the chambers a little. I would try to keep them with less than 1 cc difference.