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Cross threaded rear suspension bolt hole help.

Discussion in 'A3/S3 Forum (8L Chassis)' started by MattW86, Apr 6, 2014.

  1. MattW86

    MattW86 Member

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    Hi guys,

    As title suggests, I recently changed my rear dampers on my S3. Its seems that the passenger side bolt hole on the trailing arm has only got a couple of threads useable which the bolt just cant get a bite on.

    Would I be best buying a 2nd hand trailing arm off of ebay or will this repair kit do the job?

    25714030000 | AMAFASTENERS Ltd. (UK)

    My main question with the kit is the fact it states for M14x1.5 when the bottom bolt is M14x1.

    All advice and opinions welcomed

    Matt
     
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  3. rupe

    rupe A3 TQS In Devon

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  4. MattW86

    MattW86 Member

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    Thats the bolt im having diffs with. I must of read the type wrong. Do you think that kit would do the job?

    Thanks
    Matt
     
  5. Broken Byzan

    Broken Byzan Photographic Moderator
    Staff Member Moderator VCDS Map User quattro Audi A4

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    drill through and use a longer bolt with a nut
     
  6. rupe

    rupe A3 TQS In Devon

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    I've used plenty of helicoils, but usually for replacing knackered threads in aluminium and never on anything critical like that so wouldn't like to say, If drilling through and using a locking nut is an option, then I'd be happier with that I think.
     
  7. Vex182

    Vex182 Guess what I drive...

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    I've had to use a nut and bolt on one side of mine.
     
  8. Tooks

    Tooks Active Member

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    Just get a longer bolt and nut, you won't need to drill it.

    The only thing you need to worry about is making sure it's at least a 10.8 HT bolt (and nut) and you can always cut it down if it's too long.

    I've had to do my passenger side too.
     
  9. MattW86

    MattW86 Member

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    Cheers for the replies, i have ordered a couple of 100mm and 110mm bolts with some nylock nuts.

    Would you recommend using some loctite as a precaution?

    Matt
     
  10. Ian2012

    Ian2012 Active Member

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    no need for loctite the nyloc nut will be fine
     
  11. ant schof

    ant schof Member

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    HI Matt ,
    Just read your post . I had the same problem when fitting my B8's managed to cross thread the hole , resolved it to , by using
    the same bolt from the other side of the hole . Clean the threads up first with a thread file and plenty of squirt and it can be wound in
    from the back , go slow and draw the bolt in and out a few times . Giving you a clean thread to start again . All assuming the bolt is'nt too dammaged . Or could be done with a new bolt . Good luck

    Cheers Ant
     
  12. ant schof

    ant schof Member

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    You'll also need to whip the caliper and carrier off that side for better access , but it is do able :)
     
  13. MattW86

    MattW86 Member

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    Cheers for the replies guys, Ant i might give that a try while im waiting for the longer bolts to arrive.

    Matt
     

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