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Leaking exhaust at turbo/downpipe interface 900 1995



Hey Folks,

I recently purchased a 944T with a professionally made custom 3" exhaust system. I took it in to get it through the Out of Province safety inspection and they failed it because there's a small exhaust leak at the interface between the turbo and the downpipe. It looks to me as though the interface flange was made properly, it just doesn't seal 100% completely. (Do they ever ?)

What should I do ? How can I get a tight seal at that joint for at least long enough to pass the inspection ? Should I take the pipe apart at that joint, smear in a little JB Weld or some other product and bolt it back together ? Is there some other product I could use that would be easier to remove in case I ever have to break that joint apart and reseal it in the future ?

I could take some pics of the leaky interface if people need to see what it looks like in order to be able to suggest how to fix it ?

Thanks,

Roger








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Leaking exhaust at turbo/downpipe interface 900 1995

Dear Roj,

Hope this finds you well. I read your post. I didn't respond, because I don't have turbo-equipped cars. Thus, I'm not familiar with the turbo-to-downpipe connection. On normally-aspirated (non-turbo) cars, I am familiar with the manifold to downpipe connection, having taken a few of them apart.

The key words in your post are: "a professionally made custom 3" exhaust system".

When custom work has been done, most of what one knows about a problem goes out the window. In terms of exhaust systems, without plenty of pictures, it is pretty hard to know how the person, who did the modifications, shaped pipes or made joints. Offering advice on a problem with such a set-up, sight unseen, is hard. That may account for the small number of replies.

Whenever I see a post relating to a custom audio set-up, I don't bother to read it. Whatever I may know about typical Volvo-installed devices, likely is no help to someone, who faces something different. Equally, whatever I might learn, likely is so specific to that installation, that it won't again be useful.

The bottom line: those, who do modifications - or have them done - cut themselves off from the vast body of knowledge about the standard method or installation. The difficulty of getting advice is a hidden cost of doing - or having done - these modifications.

Yours faithfully,

spook








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Never mind, problem solved. 900 1995


Problem is solved so no need to respond to this. [Not that anyone seemed to be in much of a rush to post a response to this question ;) ]








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Never mind, problem solved. 900 1995

What was your fix?








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Never mind, problem solved. 900 1995

What was your fix?








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Leaking exhaust at turbo/downpipe interface 900 1995


I guess I should mention that I tried tightening the bolts but it didn't seem to help much, if any.

Not sure what to do...

Roger







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