Cometic gaskets were first used by the high hp/high boost import cars. They also have became a favorite of the Dirt racers-410 sprints,late model and DIRT Modifieds where they usually tear down after about every 7-10 races because they can be reused,if they have not been compromised. They are also used by most all of the fast SS/A-SS/AA Hemi crowd also for that reason also. Where most would only get one use out of a good set of aftermarket gaskets the Cometic have helped lower costs because of their ability to be reused.
A while back I inquired about them for our trucks and was given a resounding "NO WAY" and "Not cost effective due to needing a different machine to make the inline 6 gaskets". Then they tried the split gasket and it was a bust and never sealed for our trucks. When checking back with them we were told that they,Cometic,had made a piece to adapt their current machinery to make the inline 6 style gaskets. This is what they mean when they now say they are soon ready. Last I had heard they were on the street doing some testing and could be released later this year.
One thing I will offer those here,from past experiences,once they have hit the street those who buy them must keep in mind they are not a cure all for what ails you. Meaning,ANY headgasket will fail under the right cylinder pressures and it could also be a Cometic that does this. Just because you buy them it does not mean your headgasket will never fail. I have seen them fail in other applications with high cylinder pressures from big alcohol pills and heaps of timing.
Are they a great product,certainly in the applications where I have used them or seen them used. Are they a cure all for those who do not wish to o-ring or fire ring,I would say no as the only way to lower your chances for headgasket failure in our trucks is sealing the combustion chamber with proper rings,good head studs and proper torque down procedures.
I have used this as a example before and do it again here. .
While in the midst of his back to back championship years as a DHRA puller,Sled Pullers truck had only o-rings and new head bolts when it was assembled. It seen way more boost than most any of our street rides will see and never failed. When it was sold the motor was still intact and being used by the new owner on the DHRA circuit. Its just goes to show that proper preparation and torque procedures mean more than fancy trick parts... ... ... . Andy
Attention: TDR Forum Junkies 
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