Does anyone have the part numbers for the exhaust manifold flange gaskets? They're the "donut" style where the y-pipe connects. I've called my local stores and they all say they dont list the part. I know I've bought them in the past.

Also, the passengers side manifold has this goofy looking spacer between the manifold and y-pipe. Is there a gasket that goes here too?

 

Donut gaskets are COMPLETLEY generic. There are only 2 styles (tapered both sides, and tapered one side and flat one side), and a handful of sizes (2", 2¼", etc.). They can be either composition or pressed metal powder. A VERY small universe to choose from.

Just take the remains of whatever you have, and match it up. Most gasket lines (FelPro for example) package them in plastic bags which makes it SUPER eeeeeeezie to match em.

I don't recall any of these cars using donuts; seems like they're all a ball flange on the manifold, and a matching flange on the pipes. But I could be mistaken. That's probably why the stores don't list em for these cars. However if you have manifolds that came from some other car, they might fit, but use a different arrangement.

Carb cars have the EFE ("heat riser") valve in the palce you describe; not sure if any of the FI ones did, although in the overlap years, they might have. No that does not require a gasket, although on the flat side (toward the manifold) you could add a flat one if you felt like just having something to blow out later.

 

Thank you.

 

While carbed cars were equipped with the EFE valve, TPI cars had a simple spacer.

JamesC

 

And there is no gasket between the spacer and manifold?

 

There shouldn't be any gaskets. The driver's side manifold and the spacer on the passenger side have a ball socket machined into them and the pipes are flared to match the angle. The top side of the spacer and the bottom side of the passenger side exhaust manifold are machined flat so there is no gasket needed there also.

If it makes you feel better you can apply a thin coat of exhaust cement/sealer. Just be sure to assemble the exhaust quickly as it drys in a few minutes.

 

Okay, I'll take your word for it. Thank you.

 

My passenger side manifold has a flat side...the y pipe has a flared (cupped) fitting...what do I do there?

 

You are missing the spacer.

 

Take note of part 21.

JamesC

 

Edit- never mind. misread.


Thank you!