exhaust flange gasket

[sdsurf]

I keep blowing my exhaust flange gasket. STock L-16 manifold into stock exhaust. I thought about doubling it up with 2. Any thoughts?

[MikeRL411]

Auto parts stores sell a silicate based "muffler sealant" in a tube. It is high temperature resistant. Put a circle around the 2 exhaust holes in the gasket, on both sides, and install. Hopefully this willfill in any warping of the flanges and seal the joint. I used this method to fabricate an exhaust gasket for my RL411 out of 2 510 gaskets. It's been holding for 12 years.

[Pacific coast Datsun]

I used to run 2 gaskets on my Mazda truck because 1 of the flanges was slightly warped. Worked fine :D

Maybe do 2 & use the sealant to be sure.

[I'm BLUE]

^^^ I was just about to say you should check for warpage on the exhaust manifold surface , as well as cylinder head surface :D

[Braden]

i doubt the manifold side would be warped enough to make it leak but the flange side would be, i made a flange out of 1/4 inch plate and its been working great! just use the gasket as a template !

[motavated]

It could be that the flange could be hitting the trans. Causing a bad seal. Causing it to malfunction down to road....

[I'm BLUE]

i doubt the manifold side would be warped enough to make it leak but the flange side would be, i made a flange out of 1/4 inch plate and its been working great! just use the gasket as a template !

 

Wellllllllllllllllll ,,, you have to work on enough over-heated motors to see this :lol: