exhaust problem/question

[damdummy]

have a '74' Bronco when i purchased it about 9 months ago one of the exhaust gaskets (the donut on drivers side where manifold connects to pipe) was missing or burned out. Replaced it and now it is toast again. Anyone know what is causing this? Thanks for the help. >-

 

[Bully Bob]

HEAT

May have a restriction in the muffler.

I believe you can get those donuts made of metal but you may still have a heat prob. on that side.

-or-

May have just bought a bad donut....try another first.