Quote:
Originally Posted by VWBeamer
Is it possible that you have too much back pressure in the exhaust system?
I've had good luck with the copper gaskets, annealed in an oven on other cars. The gasket is heated in an oven to about 400 degree, then left to slowly cool. This makes them soft. The heating/cooling cycles when installed will make them hard again.
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When copper gaskets where on her, those lasted the longest at 2.5 years before the put-put-put came back.
Funny you should ask. I got the casting numbers off of the exhaust manifolds on her now and the LH is from an '81-'85 260, 307, '86-'87 442. No wonder she can't breathe. I didn't bother looking at the RH. I think I may have found some repro exhaust manifolds at Thornton Reproductions. Would anyone mind commenting about them please or directing me to a company where I can purchase the exhuast manifolds. I finally have the correct casting id's.
