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  1. #1
    s3clarke's Avatar
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    Screching noise still..

    Hi guys,

    changed my TIP today in the hope that the screeching/ supercharger type noise was coming from the split oil breather. since changing it its not the case as its still there.. does anybody know what would cause this? it happens under boost, sound pretty good, but its defiantly not helping things as it seems slower.. Cheers.

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

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  3. #2
    Scullies's Avatar
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    You should do/get a boost leak test/smoke test done

  4. #3
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    sounds like your turbo is goosed...under load and does the screech hold until you let off the throttle?
    James
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  5. #4
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    Screching noise still..

    Yea mate, I've hot no smoke bellowing out as yet, and it pulls good aswel for a non mapped car, but it sounds as if a pipe is split kinda noise. I think the best thing as mentioned is a boost leak test. If not that, then will have to look at turbo etc.! I checked play in the turbo earlier, which was minimal.
    The noise randomly just came, it hasn't been a slow recurring thing.. Puzzled?!

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

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    Re: Screching noise still..

    Can u video the noise?
    James
    Silver Audi 8L S3
    97 Fireblade fully restored ...just for summer!
    My old Corrado VR6 Turbo... Click me for the build DIY style!
    and many many cars and bikes in the past!!

  7. #6
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    Screching noise still..

    Yea I'll try and sort 1 out later. It's pretty loud

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  8. #7
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    Cracked exhaust manifold or blown mani to turbo gasket.

    My old A3 used to do it.
    I quite often say I'm going to do things.

    Then never do them.

  9. #8
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    My car was squealing like a pig yesterday but not just on boost but all the time, turned out my inlet manifold was removing itself from my car without my permission! Put some new bolts in as a few had gone completely and tightened the others up and all was good again
    Booooooosting just a little bit

  10. #9
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    Screching noise still..

    I'm hoping its nothing to big as I have alot of work on anyway as it is. Bloody cars hey! My stock car don't give me this much greif haha

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  11. #10
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    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  12. #11
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    Screching noise still..

    http://www.facebook.com/photo.php?v=574530495892207 not sure if these will work trying to do it off my phone..

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  13. #12
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    thats your turbo bud,thrust bearing has gone.
    James
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    My old Corrado VR6 Turbo... Click me for the build DIY style!
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  14. #13
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    what play did the turbo have in and out? if its good then a chipped blade on the exhaust side.
    James
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    My old Corrado VR6 Turbo... Click me for the build DIY style!
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  15. #14
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    Screching noise still..

    In and out I can't say as I tried just up and down side to side play. 1 blade has a bent bit I'll put a picture up, it's not big and would it cause such a noise?

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

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    Screching noise still..

    ImageUploadedByTapatalk1362346544.999242.jpg ignore the oil, that was from the split oil breather pissing oil on the gearbox and turbo housing

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  17. #16
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    yea it would as it disrupts are flow but its mainly on the ex hot side ive seen many times over and over..

    does sound more thrust noise than blade i would check the play in and out again.
    James
    Silver Audi 8L S3
    97 Fireblade fully restored ...just for summer!
    My old Corrado VR6 Turbo... Click me for the build DIY style!
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  18. #17
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    check inlet manifold bolts.
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  19. #18
    s3clarke's Avatar
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    Screching noise still..

    I'll check the play at another date then, and if I try and bend that bent bit of the blade back somewhere near how it should be and it continues to squeal, then I'll have to check other things.. Pain in the backside as I have a few things on at the moment.

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  20. #19
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    Think im just going to bite the bullet and except the fact that my turbo needs a re-build. I have a week off the start of April so will take it off before then and send it away hopefully have it back by then so I can fit it back on in my spare time.
    Last edited by s3clarke; 4th March 2013 at 11:16.

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  21. #20
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    Screching noise still..

    Quote Originally Posted by AudiS3-Turbo View Post
    thats your turbo bud,thrust bearing has gone.
    How much would a rebuilt cost if it was just this pal?

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  22. #21
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    Re: Screching noise still..

    No idea bud, price around but check it first.
    James
    Silver Audi 8L S3
    97 Fireblade fully restored ...just for summer!
    My old Corrado VR6 Turbo... Click me for the build DIY style!
    and many many cars and bikes in the past!!

  23. #22
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    Screching noise still..

    When I manually turn the fins I can make the kinked blade touch the housing, I recon if that's catching under boost then that's what the noise is..

    Audi s3 goodwood green, BAM, n249 delete, 80mm TIP, s2000 air-filter, new turbo, ap coil overs, lots of poly bushes, 15mm spacers all round rolling on 18'' RSTT's

  24. #23
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    Re: Screching noise still..

    That won't help, if its that bad that's a sure sign the turbo is well past its best bud
    James
    Silver Audi 8L S3
    97 Fireblade fully restored ...just for summer!
    My old Corrado VR6 Turbo... Click me for the build DIY style!
    and many many cars and bikes in the past!!

 

 

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