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Discussion Starter · #1 ·
I suggested using the 'ol cometic .030 to my engine builder. He said that he wouldn't use a thinner gasket because of potential for gasket failure. He said the SE stock thickness gasket would last longer.

Has anyone heard of a problem long term?

Also, I assume I can use the stock pushrod with the .030 gasket?
 

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Discussion Starter · #8 ·
He's a factory trained tech who has been servicing all the police bikes in this county for the last 10 years, so I trust him. He says he's rebuilt more H-D Evo's & Twin-Cams than he can remember. They probably just don't use cometics on the police bikes.

How 'bout my stock pushrods with that gasket?
 

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Discussion Starter · #11 ·
Just to make sure I am coming up with the right part # C-9721 for a Cometic .030 on a 1550 twinkie?
 
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