Pacesetter paper gasket blows out
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Joined: Jun 2002
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I don't necessarily agree with using RTV sealant on exhaust gaskets of any type.
The RTV eventually burns away and weakens the bond lessening the thickness which causes the bolts to lose their holding torque and this accelerates the blow out of the loose gasket.
My theory and it could be argued.
The aluminum should be malleable enough to conform to seal by itself without having to use the RTV. Leaks can occur unless retorquing happens after the burn off.
Copper is better for sealing all by itself.
I have been using those types of carbonfibrepaper gaskets without sealants for many years and never had a blow out or even a leak. :?
Just install them dry and torque to spec.
The RTV eventually burns away and weakens the bond lessening the thickness which causes the bolts to lose their holding torque and this accelerates the blow out of the loose gasket.
My theory and it could be argued.
The aluminum should be malleable enough to conform to seal by itself without having to use the RTV. Leaks can occur unless retorquing happens after the burn off.
Copper is better for sealing all by itself.
I have been using those types of carbonfibrepaper gaskets without sealants for many years and never had a blow out or even a leak. :?
Just install them dry and torque to spec.
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Certified GM nut
Joined: Jul 2004
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From: New York City
About 1 hour into the trip, I was playing with my camera and doing some hi-speed runs. On my 3rd run, this happened.
Glad you got it fixed. I am surprised the clamps Pacesetter gave you have held them in fine.
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