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Thread: knocking noise after lowering

  
  1. #1
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    triggie's Avatar
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    knocking noise after lowering

    ive recently lowered my coupe turbo with bilstein b4,s and eibach pro springs,
    the problem im having is with the back of the car.
    before it got lowered it was very bouncy so i decided rather than standard again i would drop it slightly with the above set up only by 15mm but the back end doesnt seem to ride over bumps but seems to have the feeling its being dragged over them, extremely hard and keeps making a knocking noise when going over bumps in the road and when turning quickly.
    ive had a brand new blueflame cat back fitted of which is perfect as before the original catback was knackered, there was some knocking then but i thought it was the exhaust but it cant be as its been replaced..
    so,
    new springs,dampers,exhaust,discs and pads but still that f***ing knocking noise.
    any ideas would be helpful..

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    Cavelly's Avatar
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    im having the same problem atm mate im guessing it might be the anti roll bar links, which have gone in mine, its goin into the garage 2moro neways so ill update this 2moro if youve not sorted it by then

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    IainL's Avatar
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    Do a search on here for Bilstein B4's. I have read recently on here that a few people have had the same problem with this make of damper, for no discernable reason.
    I>< Silver Coupe ><I

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    low3sy's Avatar
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    sounds like the drop links to me
    Quote Originally Posted by fozzie1984 View Post
    but the wife thinks its better to spend money on food and silly things like that.

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    triggie's Avatar
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    drop links where replaced 2 months ago.
    ive read about the rear bilsteins having problems but some people said they where fine.

  6. #6
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    DiscoFred's Avatar
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    Nah not droplinks, I have same problem. I will be taking them off and packing the eye holes at the weekend hopefully...

    Link:
    http://www.astraownersclub.com/vb/sh...d.php?t=253806


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    benhavenhand19's Avatar
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    my bilsteins are fine but mine is a hatchback. the only people that i have noticed that has this problem are ones who drive a coupe.

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    jafo666's Avatar
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    Depending how much you have lowered could be the anti-roll bar links knocking against the wishbone? Im sure if you got 40mm or lower you may need to buy shorter links?


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    DiscoFred's Avatar
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    ^ Arse.

    (a) Pro-springs = 30mm.
    (b) Noise is from the back not the front.

  10. #10
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    s24rrt's Avatar
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    Sounds like the exhaust where it goes past the tank at the back, mines done it since I put coil overs on and is a right pain in the bum....
    Turbo

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