Thinnest head gasket and/or copper?
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Thinnest head gasket and/or copper? What is the thinnest head gasket that can be made? I need something like a 0.015" or 0.020" thick gasket to get my quench down (at 0.065" right now with a 0.045" cometic gasket). I'm going to call Cometic tomorrow and ask them what they can do, but does anyone make a copper gasket for the LS1?
Chris
Chris
Originally Posted by Reboot
Just curious, how could your quench be .065 with a .045 gaskey unless your piston is .020 in the hole? Is this an LS1 you're talking about?
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I am sitting at ~0.050" cold but when the engine heats up the block grows some 0.010" to 0.015" and settles in at about 0.060" to 0.065". I called Cometic yesterday and they are going to make me a 0.018" gasket. This will set me a little close when I'm cold but as the engine comes up to temp I'll be in the 0.030" to 0.040" range which is right where I want to be. 
Originally Posted by NoseUp
That means you're .020" IN the hole (below deck). The very lowest I've ever head of an LS-1 motor being is .005" ABOVE deck. That's lacking some sense...
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Originally Posted by Mike at Boost Performance.co.uk
Sure, the block will grow some and so will the pistons
Have you taken a measurement and found them 'in the hole' cold? Are they stock pistons or custom?
Have you taken a measurement and found them 'in the hole' cold? Are they stock pistons or custom?
I'm sitting 0.005" in the hole cold.....the pistons have been thermal coated which keeps them from growing much (we had to cut the piston to wall clearance a tad to make up for this).....to give you an idea of how much the block and heads grow, my cold lash (solid roller) is 0.002" and hot is 0.022"......the heads are coated (chambers, exhaust ports, and valves) which is keeping a lot of heat out of them (less growth.....probubly ~ 0.005") so most of the growth is from the block....
Last edited by 2001CamaroGuy; Oct 30, 2004 at 05:14 PM.
