Cometic Base Gaske Installation?
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Road Warrior
Joined: Dec 2008
Posts: 1,476
Likes: 23
From: Summit, Mississippi
Cometic Base Gaske Installation?
Been 15-years plus since I went thru this drill.....little help would be appreciated. I have decided to go with Cometic base gaskets on a 1340 rebuild. These are bare copper gaskets and I would like to know if there are some "tricks" to this installation.
I have also heard about some revisions to head-bolt torqueing values and possibly the tightening sequence. Some help in that area would also be appreciated.
I have also heard about some revisions to head-bolt torqueing values and possibly the tightening sequence. Some help in that area would also be appreciated.
Sponsor
Joined: Dec 2007
Posts: 12,084
Likes: 829
No tricks really, but a light fog of Copper Coat spray won't hurt those base gaskets.
Torque head bolts per reccomended specs from Cometic.(comes out to be just about 42 ft/lbs, if using the 1/4 turn bolt method.)
Scott
Torque head bolts per reccomended specs from Cometic.(comes out to be just about 42 ft/lbs, if using the 1/4 turn bolt method.)
Scott
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Road Warrior
Joined: Dec 2008
Posts: 1,476
Likes: 23
From: Summit, Mississippi
Is the "preference" the 1/4-turn or final-torque-with-wrench method.....or does it really matter. My mind is not so far gone that I can't remember using the 1/4-turn method. I've had two Twin Cams since 1999 and it's been 1997-or-so since I put a wrench on an EVO motor. But.....I am darn glad I have one now.
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