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-   -   Exhaust gaskets (https://www.offshoreonly.com/forums/general-q/386165-exhaust-gaskets.html)

BillK 08-12-2025 01:51 PM


Originally Posted by Tartilla (Post 4932570)
On aluminum a razor will take off a lot of metal if you get the angle wrong.

I guess you have to have the feel for it :) I use them all day on aluminum heads. But i am also doing it with the head on the bench in front of me. Makes it a little easier :)

PQ290Enticer 08-12-2025 02:45 PM


Originally Posted by BillK (Post 4932571)
I guess you have to have the feel for it :) I use them all day on aluminum heads. But i am also doing it with the head on the bench in front of me. Makes it a little easier :)

I barely have enough room to get down there and once there my face is so close to the heads I couldn't focus. I had to go to the store for 3.0 readers. Still tough. I worked on them on and off for 3 days to get them clean. I will NOT be using their exhaust gaskets again. Gonna try one of Smittys recommendations.

F-2 Speedy 08-12-2025 03:17 PM

Dont they make an multi layer reusable gasket like the have for headers ?

articfriends 08-12-2025 06:03 PM


Originally Posted by F-2 Speedy (Post 4932581)
Dont they make an multi layer reusable gasket like the have for headers ?

You just buy premium felpros or mr gasket ultraseal header gaskets. I coat them with antiseize, reused same set thru multiple rebuilds on my baja. As long as there not ran leaking, they last quite a while, I had stainless marine gen 3 manifolds, Smitty

compedgemarine 08-12-2025 06:21 PM

the whole problem is I HATE anti-seize. seems if I walk with in 5 feet of it I have it all over my hands, shirt, tools, shop floor, bench, etc. I swear you could cover an entire house with a pint bottle of it. other than that it works great.

SB 08-12-2025 06:45 PM


Originally Posted by compedgemarine (Post 4932593)
the whole problem is I HATE anti-seize. seems if I walk with in 5 feet of it I have it all over my hands, shirt, tools, shop floor, bench, etc. I swear you could cover an entire house with a pint bottle of it. other than that it works great.

You ? :)

https://cimg4.ibsrv.net/gimg/www.off...7993b4cb1.jpeg

xlint89 08-12-2025 08:16 PM


Originally Posted by articfriends (Post 4932534)
I use the silver stuff, seems like the copper high temp doesnt work as well when it theoretically should work better. so are your cometic mls exhaust gaskets just pure metal?

I would say yes. Although they might have a teflon (silver/gray color) coating on them?

Mine would be used with CMI headers instead of manifolds if that makes a difference?

Thank you

Tartilla 08-13-2025 05:38 PM


Originally Posted by compedgemarine (Post 4932593)
the whole problem is I HATE anti-seize. seems if I walk with in 5 feet of it I have it all over my hands, shirt, tools, shop floor, bench, etc. I swear you could cover an entire house with a pint bottle of it. other than that it works great.

Worse than silicone!!!

articfriends 08-13-2025 08:01 PM

[QUOTE=xlint89;4932615]I would say yes. Although they might have a teflon (silver/gray color) coating on them?

Mine would be used with CMI headers instead of manifolds if that makes a difference?

Thank you[/QUOTE
it makes no difference, as long as the surface is clean and fkat, you put a very thin coat on, i put it on tbe stainless exhauat bolts too so they dint gall, especially in aluminum heads.


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