A question about dropping the exhaust?
 

I'm going to drop the exhaust to install the Hurst shifter and BB C Beam plates,what gaskets will I need at the exhaust collectors?

Re: A question about dropping the exhaust?
 

The right side is slip on and clamped. The left side is swaged on the rear pipe to mate with the header-cat oversize taper. Behind that swaging is a 3 hole clamp and 3 bolts tighten this clamp with the threaded header-cat flange to snug the joint together. There is no gasket. Most "cat-back" aftermarket exhausts connected the same way but what you find on any particular zr-1 could vary widely.

Re: A question about dropping the exhaust?
 

On the 3 bolt flange are these through bolts and nuts,not studs and nuts? Thank so much for the info.

Re: A question about dropping the exhaust?
 

It is 3 bolts into a threaded flange. Prep well wth penetrating oil or you might break one off. Just did mine a few days ago.
H

Re: A question about dropping the exhaust?
 

The flange on the cat is threaded. (Saving a thousand words)

http://www.wallhost.net/ns/images/exh-1.jpg

Re: A question about dropping the exhaust?
 

That's what I was afraid of,with my luck I hear a snapped bolt in my future.

Re: A question about dropping the exhaust?
 

Not so bad... worst case you drill the bolt out, rethread to next size, buy a new bolt.
H
:cheers:

Re: A question about dropping the exhaust?
 

Wasn't a problem on my '91 when I swapped to SW headers and exhaust..

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Re: A question about dropping the exhaust?
 

When I did mine I just put a standard header collector gasket on it. Just for peace of mind...

Re: A question about dropping the exhaust?
 

Lately I have been dropping a lot of things; last night it was a tractor!