Head gaskets?
Melting Slicks
Joined: May 2010
Posts: 2,378
Likes: 9
From: Katy TX
I went with a Cometic 4.205 bore .045 thick head gasket for my 4.165 bore RHS block. Most of the time I prefer to stick with GMPP when possible, but I couldn't find one for my bore size. I know Cometic had some issues in the past, but I've been told that they are working well now, so I'm optimistic.
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Thread Starter
Pro
Joined: Jun 2013
Posts: 526
Likes: 8
Talked with Cometic today they said they will make any size gasket i want same cost as shelf gaskets just takes a few days so the question is what size should i get 4.155" and also i was planning on .051 thick should i do .040 that would take my comp. up to around 9.6* VS 9.4* will that matter much with twins?
Pro
Joined: Sep 2006
Posts: 577
Likes: 3
If that's the 5th gen I think you're talking about he had meth injection as well. I think he is also about to rebuild the motor again unfortunately.
Thread Starter
Pro
Joined: Jun 2013
Posts: 526
Likes: 8
I got the details from the builder today and used the chart to figure out the Comp ratio 4.155 gaskets 0.040 are 9.85-1 and .051's are 9.64-1 builder said no worries on PTV clearance with the cam i'm using!