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Trailing arm bush replacement (s3)

Discussion in 'A3/S3 Forum (8L Chassis)' started by s3dave, Feb 18, 2012.

  1. s3dave
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    s3dave TFSI Hybrid

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    My car was getting very nervous on the road and started skipping over rough patches /grates ive had this on my old BMW so i knew what it was, the bloody trailing arm bushes....
    So i replaced mine today, not a job for the faint hearted as your stress levels go through the roof, especially when the last guy that 4 wheel aligned my car rounded one of the bolts, the hardest one to get to as well right up in the chassis...:no: i ended up chiselling it off
    20,000 swear words later i was left with this....
    [​IMG]


    To the untrained eye it does not look to bad....but i put a screwdriver in the middle and it could be turned at least 45 degrees and was as soft as jardos A3...:)

    So the drilling and cutting began, fairly easy to be honest and then it knocks out at the rear...
    [​IMG]

    Then the New bush is easily installed after been lubed up...

    [​IMG]

    Put back together very easy and the difference on the road is like night and day...much more planted

    if you are doing this pull the brake pipe from its holders around the petrol tank before you attempt to move the arm or you will snap the brake pipe, when it is loose there is plenty of play in the brake pipe when dropping the arm

    [​IMG]






    now got to pay another arm and a leg to get it 4WA again...ah well the joys of motoring eh....:icon_thumright:
    #1
  2. Welly
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    Welly VX220 SC Driver :)

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    I really must do mine to be fair, mine is starting get a get nervous as time goes on. The winter not helping matters but I suspect that this will be the lead cause...
    #2
  3. superkarl
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    superkarl MAN OF STEEL

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    Nice one dave. I shouldve drilled mine but, mine looked totally fine.
    Doubt il get mine done before alignment on wednesday :(

    How long it take you?
    #3
  4. s3dave
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    s3dave TFSI Hybrid

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    Well with seize/rounded bolt about 5 fkn hours... I would get yours done Karl, the rubber looked ok but had totally gone soft, not a nice job but the end results def outweigh....
    Last edited: Feb 19, 2012
    #4
  5. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator

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    Deffo worth doing then.
    I need to do mine to as it wanders around especially on motorway ruts etc.

    It's much easier to fit the powerflex over the OEM for sure

    "As soft as........... .." LMAO
    #5
  6. superkarl
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    superkarl MAN OF STEEL

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    il pull my finger out then.....
    #6
  7. s3dave
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    s3dave TFSI Hybrid

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    Welly yours is getting nervous because it never knows what turbo it's got in it.....lmfao..
    #7
  8. Westy
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    Westy Double Dark Side! Diesel & 8P

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    Thanks Dave! Something else to do :(
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  9. StaceyS3
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    StaceyS3 Active Member

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    Can't say how much the rears helped directly on mine as done the whole car and arbs at the same time but it certinally tightened things up a lot :)
    #9
  10. doublem_1
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    doublem_1 Member

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    Trying not to sound too daft but how can you tell if this needs replacing?
    #10
  11. sportstractor
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    sportstractor Chugger Regional Rep

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    This:

    :)
    #11
  12. brasiliangringo
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    brasiliangringo Member

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    Do you think most +90k s3s would need this doing ?

    Also, are any of you able to comment on the control arm bushes - are these fairly hard wearing on an s3 or also likely to need doing at the same sort of time on a high mileage car? Suppose its a hard question as depends how its been driven..
    #12
  13. Westy
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    Westy Double Dark Side! Diesel & 8P

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    I had a look at this bush when I was under my car tonight and it looks like a royal pita to get the bolt out! The bolts look super rusty and will probably round off. Deep joy!
    #13
  14. s3dave
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    s3dave TFSI Hybrid

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    How does your car feel on the road? if it seems ok you should be ok but at 90+k they have had a good innings anyway, not the most pleasureable job, but once there done they should see the twilight years out nicely...
    #14
  15. brasiliangringo
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    brasiliangringo Member

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    Thanks, i havent got one yet!! Just doing my homework.. Already lining myself up for a golden oldy..
    #15
  16. [Dave B]
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    [Dave B] Rrrrrrrr-tech

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    Holy thread revival!

    s3dave - did you polybush this or go with an OE bush?
    #16
  17. s3dave
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    s3dave TFSI Hybrid

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    Powerflex mate...
    #17
  18. [Dave B]
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    [Dave B] Rrrrrrrr-tech

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    All still well 12 months on?
    #18
  19. s3dave
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    s3dave TFSI Hybrid

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    Yes mate, and its had stick, very worthwhile,....
    #19
  20. s3clarke
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    s3clarke Money grabbing s3!

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    this along with my top mounts and anti roll bar bushes is next on my list. all powerflex.
    #20
  21. cecilthesausage
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    cecilthesausage ...It's Never Finished...

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    I've just polybushed mine before Xmas....
    #21
  22. [Dave B]
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    [Dave B] Rrrrrrrr-tech

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    Thanks chaps :)
    #22
  23. sandwich1987
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    sandwich1987 Member

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    Just try'd to do mine there, when undoing the trailing arm bolt instead of the bolt coming out its just pulled the metal collar right through the Center of the old bush, think the bolt has corroded with the metal collar, any tips? Lol
    #23
  24. dre_S3
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    dre_S3 Member

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    Prob better of getting a new bolt mate for both sides, you got a TPS near you ?
    #24
  25. sandwich1987
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    sandwich1987 Member

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    I've got one near enough, but its getting the old one out....it's stuck solid to the metal insert inside the trailing arm bracket.
    #25
  26. sandwich1987
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    sandwich1987 Member

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    Any one got any ideas with this sleeve and bolt issue?
    #26
  27. @udi A3
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    @udi A3 Active Member Site Sponsor

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    Do you have a photo?
    #27
  28. sandwich1987
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    sandwich1987 Member

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    I don't mate ATM the picture s3dave has at the top of the page gives you an idea, it's the metal sleeve in the Center that's turning when you try to loosen the bolt that attaches it to the trailing arm bracket. I've try'd a punch from the nut side to try an push it through the sleeve but its not budging.
    #28
  29. sandwich1987
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    sandwich1987 Member

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    photo.jpg well finally managaed to get my drivers side bush done this is what was causing the issue, the bolt is completly solid inside the bush sleeve, had to drill and cut about 10mm of the bush and also cut the head off the bolt in order to get it free from the trailing arm bracket. for reference the bolt is an M12x1.5x80mm just going to order some instead of going through the dealer.
    #29
  30. hardhitter
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    hardhitter Member

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    Screws like that are often pretty cheap from the dealer or tps (a pound or two) and the nuts are cheaper, probably cheaper than ordering from a engineers suppliers or hardware place as a lot don't carry that pitch in M12. You know you're getting the right grade and the plating is normally more durable too.
    #30
  31. Erf
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    Erf Member

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  32. dre_S3
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    dre_S3 Member

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    Looks good to me, great mod to :)
    #32
  33. Erf
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    Erf Member

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    Anyone know what the equivalent oem part number is by any chance?
    #33
  34. [Dave B]
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    [Dave B] Rrrrrrrr-tech

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    Well what a fag of a job this is! I'm working through installing my new suspension bits and I'm having this exact problem, bush collar sized directly to the bolt.

    Sandwich - what did you cut it out with in the end?
    #34
  35. sandwich1987
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    sandwich1987 Member

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    In the picture the threads at the top were covered by the rest of the Bush, I just drilled about 6 holes all around the outside and chiseled off the rest. After cutting the head of the bolt off this gave me enough room to drop it out off the bracket, was a complete bar steward!!!
    #35
  36. [Dave B]
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    [Dave B] Rrrrrrrr-tech

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    AMEN to that! I managed to get the drivers side one out last night, I've yet to see if the passenger side one has seized as well. Had both sides of yours seized?
    #36
  37. s3clarke
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    s3clarke Money grabbing s3!

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    see im half heartedly deciding whether to attempt this tonight after ive done my coilovers :/ the job looks straight forward, but I guess its really not haha.
    #37
  38. [Dave B]
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    [Dave B] Rrrrrrrr-tech

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    It's straightforward IF the bush collar isn't seized to the bolt. If it is seized to the bolt then I'd advise taking it to a garage and paying someone else to get pissed off with it!
    #38
  39. Alex C
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    Alex C Active Member

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  40. superkarl
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    superkarl MAN OF STEEL

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    Theyre both the right ones alex. God knows why the superpro are so expensive.

    I have the powerflex one myself
    #40

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