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Rusted Exhaust Manifold Flange



The flange on my exhaust manifold is pretty rusted, what would be my best option ?

Cut it off and weld a new one on ?
Get a new or 2nd hand exhaust manifold ?
Live with it ?

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  Inferno 182
I had a similar issue with my exhaust manifold flange rusting through. So I designed a flange to fit without having to remove or weld the manifold, plus it can be used with the Renault exhaust fitting kit.

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I fitted the flange this morning, but the cat flange also disintegrated on one side while removing the old bolts, so I will get one made to replace the cat flange. The fitting kit will require a longer bolt to allow for the addition of the new flange.
 

Louis

I Park Like a C**t
ClioSport Club Member
I had a similar issue with my exhaust manifold flange rusting through. So I designed a flange to fit without having to remove or weld the manifold, plus it can be used with the Renault exhaust fitting kit.

View attachment 1345432

I fitted the flange this morning, but the cat flange also disintegrated on one side while removing the old bolts, so I will get one made to replace the cat flange. The fitting kit will require a longer bolt to allow for the addition of the new flange.
@NathanV did you find out what the diameter of the manifold was? Mainly at this point.
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