Head gasket less than 0.040"?
Head gasket less than 0.040"? Does anyone ever use a head gasket thinner than 0.040"?
I read a lot about how thinner is better for the quench and higher compression but does too thin have any downsides?
Thanks
I read a lot about how thinner is better for the quench and higher compression but does too thin have any downsides?
Thanks
10 Second Club
Joined: Nov 2002
Posts: 1,471
Likes: 3
From: Berkeley, California
Piston head contact is main downside. Thinner gaskets may not seal as well. Most piston manufacturers recommend 0.040 minimum clearance. Since our pistons come above the deck 8 -10 thousandths, an .040 gasket reduces clearance to 0.030 inch, which is about the minimum anyone recommends.
Last edited by Gary Z; Nov 10, 2008 at 10:32 AM.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Well to decide on gasket thickness (NA) you have to know 1 important value : "piston deck height". Meaning what is the distance in or out of hole of the piston crown relative to the block deck. Let us call that value (Lp)
Quench = Compressed gasket thickness - Lp
quench range on a street motor .035>.045
Quench = Compressed gasket thickness - Lp
quench range on a street motor .035>.045
You didn't mess up Kevin, but it doesn't really help you out either on an other wise stock motor. Put you a heads and cam combo, then you can talk about what headgasket to put................
