Hi ,
My engine rebuild is near complete and I went to put the exhaust manifold back on this weekend . Its not very flat where is meets the head . As much as 1.7mm out on the centre two cylinders . Its a used one from one of the suppliers we all use . They don't have any other used ones to swap over . There does not seem to be any on e bay . My original one has big cracks in it albeit it is flat.
Has anyone put their one on a tool to even up the faces ? A linisher I guess or something similar . I am not sure we can weld the old one , unless you know differently ?
Thanks
Exhaust Manifold Flatness
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Re: Exhaust Manifold Flatness
Some years ago I set mine up in a jig on the milling machine and made minimal passes until flat. A local engineering company should be able to do the same. What is the downpipe flange like?
Pete
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Re: Exhaust Manifold Flatness
Another approach is to use a big beltsander to get it back to flat. Good enough and no setup, so it should be cheaper than millingCliffords wrote: ↑Tue Jan 10, 2023 09:59Hi ,
My engine rebuild is near complete and I went to put the exhaust manifold back on this weekend . Its not very flat where is meets the head . As much as 1.7mm out on the centre two cylinders . Its a used one from one of the suppliers we all use . They don't have any other used ones to swap over . There does not seem to be any on e bay . My original one has big cracks in it albeit it is flat.
Has anyone put their one on a tool to even up the faces ? A linisher I guess or something similar . I am not sure we can weld the old one , unless you know differently ?
Thanks
Re: Exhaust Manifold Flatness
Hi, downpipe flange is good , it looks like it had some work done on it and new studs before it came to me . Its the block end that is a banana.Pete Boole wrote: ↑Tue Jan 10, 2023 11:06Some years ago I set mine up in a jig on the milling machine and made minimal passes until flat. A local engineering company should be able to do the same. What is the downpipe flange like?
Pete
I am going to a couple of engineering places with it tomorrow , see what they say
David
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Re: Exhaust Manifold Flatness
Good luck, my recent experiences with engineering companies found that they were all cnc and getting one to do it old school wasn't that easy.
Bash
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