Hoping somebody might have some insight into how to fix this. This is the left side exhaust manifold on the 1947 Lincoln. Dad had pulled the engine not too long ago to put a new clutch in, and evidently put new gaskets on the exhaust couplers. That's great, but the left side is leaking despite tightening the nuts. I tried to get a picture, but looking at it with the mirror, it's like the flange is bowed. I can slip a razor blade in to center of it, and I can certainly feel the exhaust spitting out from it. Now a new y-pipe is $$$$. Is there a simpler way of filling the void? Key thing is I don't want to glue it together permanently; I'd rather find something that would come apart again, but I don't want some of the exhaust filling up the engine compartment. Would snipping the ends off another gasket to make it round and using it to fill the void work?
Exhaust leak - suggestions
- Thread starter Dave Sherman
- Start date
You will need a thicker gasket, or a donut gasket.
Remflex makes thicker gaskets like the one you have. However if the mating section are tapered on both sides, you could try going with a donut gasket. Walker makes a good selection if you page through there catalog.
Remflex makes thicker gaskets like the one you have. However if the mating section are tapered on both sides, you could try going with a donut gasket. Walker makes a good selection if you page through there catalog.
probly need to have the manifold and flange surfaced to make them flat then a new gasket.
You might loosen them and try get a bead of Permatex Ultra Copper in place, then tighten up. It’s just copper coloured and does not actually contain copper.
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It seems like you need a flex pipe or spring bolts there. Those might not have existed in 1947 
You may need to take the thing apart to see whats going on. Hard for me to see whats really keeping it apart.
Something like this may be of some help..
https://www.millworkshotrod.com/products/a-ddition-mw-fhef
https://www.millworkshotrod.com/products/a-ddition-mw-fhef
Thanks all, I'm thinking I'll just have to drop the y-pipe and eyeball the flanges. Strange thing is the left side has the spacer you can see, but the right side does not have a spacer. The service manuals don't show a spacer on either side. The Ultra Copper stuff looks like it might be able to scrape off if it ends up not working, but I live near Summit Racing and they have the Remflex gaskets.
