turbo/downpipe gasket
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This is a discussion on turbo/downpipe gasket within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hi Everyone. Just curious how many people replace the turbo/downpipe gasket each time you remove the downpipe for any reason... ...

  1. #1
    MAINEiac 11blackSTi's Avatar
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    turbo/downpipe gasket

    Hi Everyone. Just curious how many people replace the turbo/downpipe gasket each time you remove the downpipe for any reason...

    I put a new downpipe (turboxs) on and still have the old gasket in there (because it looked fine), but I purchased an OEM subaru replacement just to have on hand. I am going to be taking the DP off again soon to hook up my WBo2 again, and if it makes sense I will toss the new gasket on there while I am at it. I figure it would be better to put it on there while it is off than to have to do it all over again if I had a leak later on. Haven't noticed any leaks since the install.

    Thanks. (2011 STI sedan).

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    Pro Manscaper Mikie13's Avatar
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    At a junction such as that, I'd replace it every time. It does a lot of heat cycling, so putting back an already used gasket might not complete the seal. That is one place I would be certain to try and avoid exhaust leaks. So like you said, may as well avoid having to do it again IF you did have a leak. $15 for peace of mind.
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    MAINEiac 11blackSTi's Avatar
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    Yep that is what I was leaning toward!

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    Registered User mfigge2's Avatar
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    As stated above it's worth it for peace of mind. If you want to go by the book, yes replace the gasket (especially for hot connections) every time you disconnect. Realistically you can normally save the gasket. FYI I am a test engineer for diesel engine components and we frequently have the operators reuse gaskets when we dont want to wait for new parts (downtime is $$$$).
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    Registered User Ruh Roh's Avatar
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    i reused mine because i forgot to order a new one... *insert confession bear meme here*

    everytime i do something like that now i order new gaskets. no leaks from there which is good.
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    Master Baiter EJ257's Avatar
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    Replacing is ideal. If I have one handy, I'll replace it. If it hasn't been used for too long, I can sometimes recreate the lip on the gasket, and can reuse it. If the lip is unable to be recreated, I will get a new gasket.
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    MAINEiac 11blackSTi's Avatar
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    Yeah I swung into the dealership and picked up a new one. I was surprised the turbo back exhaust didn't come with one, but the old gasket looked fine (at the time of initial install). Since I will be taking the down pipe back out to add my WBo2 sensor it will be the perfect time to add that new gasket. This will be the third time the gasket is being used (took off stock DP to add WBo2, took off when I put the new DP on, and now will be taking off to re-install the WBo2). Probably better safe than run into a leak after.

    Thanks again!

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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by 11blackSTi
    Yeah I swung into the dealership and picked up a new one. I was surprised the turbo back exhaust didn't come with one, but the old gasket looked fine (at the time of initial install). Since I will be taking the down pipe back out to add my WBo2 sensor it will be the perfect time to add that new gasket. This will be the third time the gasket is being used (took off stock DP to add WBo2, took off when I put the new DP on, and now will be taking off to re-install the WBo2). Probably better safe than run into a leak after.

    Thanks again!
    A leak at that junction will cause your WBO2 readings to be off.
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