James or Cometic gaskets
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
during the transision between paper and the tin we used up all the old stock and being a dealer i had piles of them we buy in lots of 100 each piece -- some came back 6 months / a year later some didnot - but that was the time frame for leaks - jz
Outstanding HDF Member
Joined: Jul 2013
Posts: 2,874
Likes: 36
From: Houston, TX
Yeah... we'll see how long these go.. I'm not too concerned. If they last a year I'll be happy. I've done torn this thing down one too many times since the rebuild to just replace something that's working fine right now.
Cruiser
Joined: Aug 2012
Posts: 119
Likes: 9
From: Lake Helen, Florida
I used Cometic on my rocker boxes a couple of years ago and have even pulled them off a couple of times. Had to just loosen and crack open the lower ones when I replaced the cam. Then buttoned her back up with the same gaskets.
Seem to be holding just fine.
Seem to be holding just fine.
Advanced
Joined: Nov 2023
Posts: 74
Likes: 39
From: AZ
Cometic Multi-Layer Steel (MLS) head gaskets go on dry because they are coated with a sealant. Each MLS head gasket is coated with a . 001" thick Viton rubber that is bonded to the outer stainless steel layers. Adding an additional sealer can hinder the performance of an MLS head gasket.
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