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post #1 of 3 (permalink) Old 09-15-09, 10:02 AM Thread Starter
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1984 E-350 Exhaust Problems

have a 1984 E-350 with the 460 CID engine. When you replace the exhaust manifold gaskets, do you install the Felpro heat shields also? If so, does the heat shield go between the manifold and the gasket? I just can't see how I could keep that from leaking. Do I need to use them, or are they just nice to have?

Also is there any good way of fixing a leak between the Y-Pipe and the exhaust manifold? It seems to be just a metal to metal fit without any gasket. I just can't stop it from leaking.

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post #2 of 3 (permalink) Old 09-15-09, 05:13 PM
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Re: 1984 E-350 Exhaust Problems

I don't remember which side I put the heat shields on, I think it was against the head. but I don't think it matters. If the surfaces are straight and the exhaust isn't restricted, you shouldn't have a leak. With the headers,if both surfaces are clean and not distorted, they shouldn't leak either. Just make sure the exhaust isn't blocked.
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post #3 of 3 (permalink) Old 03-10-10, 10:43 AM
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Re: 1984 E-350 Exhaust Problems

for the leak between the y-pipe and the manifold, i would suggest maybe lowering the the pipe and putting a coat of high temp. silicone on it then reattaching the 2 to see if it stopped. sometimes it will plug the leak for a long period of time.
also if you have problems reattaching the y pipe to the manifold because the studs are rusted or w/e, u suggest using the hush stud fix. heres the link to their site.
The Hush Studfix
its an inexpensive part that replaces the broken or corroded studs with a new hooking apparatus. its pretty slick. good luck.
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