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Old Mar 29, 2004 | 01:47 PM
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Default Quick Downpipe Q

Did you use the original bolts and gasket between the decat downpipe and centre section when fitting?
Thanks.
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Old Mar 29, 2004 | 01:59 PM
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I'd recommend changing the gasket...only a few quid at most from a dealer.
And original bolts should be just fine..unless the new pipe comes with some.

Last edited by Johnny50; Mar 29, 2004 at 01:59 PM. Reason: Cos i cannae spel
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Old Mar 29, 2004 | 02:13 PM
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Thanks Johnny 50 but I fitted a H&S decat downpipe to an afterburner decat centre pipe and the gasket didn't fit that well between the two pipes, well didn't fit as well as the original downpipe and the decat centre anyway.
You are right about buying a new one but I am talking about the shape of the gasklet more than anything.
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Old Mar 29, 2004 | 02:31 PM
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If you use a standard Subaru gasket, you are likely to find it will need trimming on its inside to allow optimal flow between the turbo and the downpipe.

No big deal, just use a Dremel. With a bit of luck though, your new downpipe will be supplied with a correctly dimensioned gasket.

Last edited by greasemonkey; Mar 29, 2004 at 02:56 PM.
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Old Mar 29, 2004 | 03:50 PM
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Thanks GM,

I was thinking as much. Do you think this will make much of a difference. I would nearly rather buy a new one as I didn't receive any with the H&S downpipe. Should they be able to supply me with one that will fit exactly as you have described and if not where do you think I will get one.
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Old Mar 29, 2004 | 03:54 PM
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Probably a good idea to get a new one. I'm not sure if you'd be able to get a correct one off the shelf, especially not from a Subaru dealer.

TBH most of the gaskets I've seen for any car are a touch oversized on their inside, and could benefit from a little trim, so in practice I think you're going to have to be prepared to trim it yourself.

It shouldn't make a big difference, but, at tend of day, there are small gains to be made from making sure the gasflow from the turbo into the downpipe is as clean as possible. That's why you've got an open neck downpipe after all!
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Old Mar 30, 2004 | 08:43 AM
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Default gasket

It shouldn't make a big difference, but, at tend of day, there are small gains to be made from making sure the gasflow from the turbo into the downpipe is as clean as possible. That's why you've got an open neck downpipe after all! [/QUOTE]

Just to make sure I was talking about the gasket betweeen the downpipe and the centre section. I fitted a new gasket between the turbo and downpipe.
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