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Thread: turbo problems

  1. #1
    Regular Member signumturbo04's Avatar
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    Angry turbo problems

    for the past while i have had problems with the turbo bolts coming slack on my z20net. the standard bolts decided to part company with both turbo and cat so i have had them drilled out and new 8mm bolts fitted instead. still the bolts come slack and looses boost i have tried lock-tite, damaging the threads to stop it winding off and even a second nut on the end but still it comes slack any1 got any ideas as to resolving this??

    oh forgort to mention its the 3 bolts that hold the turbo and cat together




  2. #2
    Regular Member mrk's Avatar
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    Vehicle : vectra hatchback

    Trim : improving

    Engine : 1.9cdti mas remap

    Year : 06

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    you could try philidas nuts(think thats how it's spelled)they're good with vibration

  3. #3
    Regular Member felixx's Avatar
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    Arrow

    Quote Originally Posted by signumturbo04 View Post
    for the past while i have had problems with the turbo bolts coming slack on my z20net. the standard bolts decided to part company with both turbo and cat so i have had them drilled out and new 8mm bolts fitted instead. still the bolts come slack and looses boost i have tried lock-tite, damaging the threads to stop it winding off and even a second nut on the end but still it comes slack any1 got any ideas as to resolving this??

    oh forgort to mention its the 3 bolts that hold the turbo and cat together



    Try nylon (NYLOK) locking nuts together with a locking washer and nut lock!!!! That might do it.FELIXX.

  4. #4
    Ex Vec-C Admin Deztroyer's Avatar
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    are you sure your getting sufficent torque on them when there fitted?
    also why not get the original ones as there only about 1.50 each

    0-Large smile ......every time it's driven

  5. #5
    Regular Member Das's Avatar
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    Vehicle : Honda Civic

    Trim : ES,Panoramic Roof and Power Mirrors

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    My suggestion would be a spring washer, not sure about nylocks in that area, id think the plastic would just melt away felix.

  6. #6
    Regular Member Craig1985's Avatar
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    Mine some how broke away within 30k from new. Think the replace turbo and manifold at the said it had warped ?

  7. #7
    Regular Member mrk's Avatar
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    Vehicle : vectra hatchback

    Trim : improving

    Engine : 1.9cdti mas remap

    Year : 06

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    that's why i said philidas nuts, nylok would be no good with the heat,spring washers would be ok but steel ones would lose their spring if subjected to great heat (i think its over 200 deg C)

  8. #8
    Regular Member Steven's Avatar
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    What MRK said, we use them at work on high temp blowers and they are very good!

  9. #9
    Regular Member mrk's Avatar
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    i could have a look at work for some if you let me have the size and could post them up for you if req.
    give me a pm with adress if you are interested
    (no charge obviously)

  10. #10
    Regular Member Keif's Avatar
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    You can't just reuse the original nuts, or standard nuts on a turbo.

    The original nuts will have a self locking part to them, so once used the self locking is used and is therefore no longer "locking"

    Standard nuts (like a used self locking nut) will expand with heat, and vibrate lose.

    Philidas Nuts are your answer.

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