manifold to downpipe leak

when did the o ring & clamps exhaust manifold replace the 6 stud type. I have tried both types of seal, solid ring & mesh and mine still leaks. Now considering changing manifold

I've had loads of problems with the C type on my Cabrio. New C clamps stopped it leaking but I've got nasty squeaks whenever I accelerate and decelerate, I think its the Ernst down pipe I got that?s causing it, I don?t think its been made quite right.

I could do with a new manifold too as the centre divide had sheered off. I managed to weld it back on but I get a bit of air rush noise under acceleration that?s not a leak, I think its air rushing between the divide in the manifold and the divide in the down pipe. I need to find out if new manifolds are available and if not source a good second hand one. Might get a genuine down pipe too if I can. I may even change the whole thing for the stud type fitment like your concidering.

Going to look at my engine mounts too as I think extra engine movement might be making things worse.

I've got a feeling the stud type system was changed to the C Type around '83/84

the car causing the problems is a 90 gti it does have Ernst downpipes. I also have an 84 model on its original system (same joint) and thats fine.I did try the seals in the downpipe before fitting and they appeared to be a perfect fit. Think they may have changed the joint type when the mk1 saloon finished. VW can only supply the later type

VW must have changed the system for a reason, it must be better when its working properly if it superceded the stud type?

So have you changed your C Clips?

yes, twice and the front engine mount, its driving me mad!

Have you changed the rear mount on the box? even try the diesel version as it's harder.

I've changed my front and rear engine mounts but still seem to have a fair bit of movement then taking up drive so i'm suspecting the side mounts now. They have done 140k so are probably shot. I'm going to do them when I next have the cambelt off.