Max Gasket Thickness for "O" Ringed Heads??
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From: Forced Induction Heaven
Max Gasket Thickness for "O" Ringed Heads?? I was thinking about O Ringing my heads and getting the chambers opened up to about 75cc vs. 72cc. The heads are LS6 heads. When I do this I am also going to have the Heads O Ringed. How thick a gasket can I go without screwing up the quench area?????
I was thinking about a .064 thick gasket. My deck height is .014 because of my combination of 6.125" rods and the block was resurfaced .004 during the rebuild. If I open the heads up 3 more CCs and use a gasket that is around .064 thick, my CR will drop from 9.67:1 (current setup) to 9.1:1. I than can run even more boost safely on pump gas.
-Kevin
I was thinking about a .064 thick gasket. My deck height is .014 because of my combination of 6.125" rods and the block was resurfaced .004 during the rebuild. If I open the heads up 3 more CCs and use a gasket that is around .064 thick, my CR will drop from 9.67:1 (current setup) to 9.1:1. I than can run even more boost safely on pump gas.
-Kevin
There's not really a point where the quench area is "screwed up"... but the thicker the gap between the top of the piston and the bottom of the head the more octane sensitive your setup will be. Since you're coming .007 out of the hole more than stock the .064 gasket is only getting you a few thousandths more quench area than stock so I doubt youll have any detonation issues.
