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Discussion Starter · #1 ·
Since I owned my classic 900 i which is about five years, I have noticed that she sounds like a tank on startup as if there is a hole or leak from somewhere, so We have changed all the exhaust system, and istalled stainless stell from the downpipe back, had the manifold all re welded as they often tend to crack, replaced all the gaskets three times re sealed all the joints numerous times and still it sounds noisy. However when the car warms up to operating temp she purrs like a kitten, but on acceleration there is a raspy noisy any chance of some help guys
 

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Discussion Starter · #3 ·
Hi Matthew,
Have used two different manifolds checked and is not leaking from there?
 

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Saab Mad
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Were both manifolds second-hand?

I had this trouble on a friend's MX5. Both existing and second-hand manifolds were warped. The sound from that leak was exactly the rasping you describe.

Did you check the manifolds for straightness? You could get one of your spares skimmed flat.

Dunno what else it could be, as you've checked everything else.

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