GTI6BOY 29 Posted April 14, 2007 (edited) Hi, My car is lowered on shocks and springs (not sure what make, but red and yellow) My bearings have just gone so i purchased the whole new top mount kit for both sides and had it fitted. At the same time i cut 1 ring off the bump stops as it had not been done before (which you do when lowering the car?) but now at 10 mph over a speed hump there is an almighty bang where the suspension seems to be grounding out. Why is this happening as i would have thought if the car was always sitting on the stops then the shocks cannot compress anymore for handling which is why i chopped them? Cheers Edited April 14, 2007 by GTI6BOY Share this post Link to post Share on other sites
welshpug 1,657 Posted April 14, 2007 its happening because you have cut the bump stop, its there and that length for a reason!!! get some new ones and the banging will stop, if you haven't knackered the shocks that is. Share this post Link to post Share on other sites
Grez4 2 Posted April 14, 2007 I would be worried if the car is always relying on the bump stops, I would check the dampers or even raise the ride hight a little Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 14, 2007 its happening because you have cut the bump stop, its there and that length for a reason!!! I was under the impression that when you lower your car and use standard bump stops they need to be trimed? I have only been on a test drive so they will be fine Share this post Link to post Share on other sites
welshpug 1,657 Posted April 14, 2007 no they dont need trimming, tis an urban myth! the shocks still bottom out at the same point no matter how short a spring you use. Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 14, 2007 i have just been informed that my springs might be fcuked as my car looks like its on the deck since i chopped the stops(so my car was being held up by them). they also said it should not matter ive cut them as the springs should hold the car up which they dont seem to be doing Does this sound right? Share this post Link to post Share on other sites
Jrod 7 Posted April 14, 2007 The springs hold the car up yes but when you hit a bump and it's compressed it needs the bumpstop to stop it bottoming out. You can cut the rears a bit but I wouldn't cut the fronts. Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 14, 2007 so my springs could be shot? Share this post Link to post Share on other sites
Jrod 7 Posted April 14, 2007 Could be but not very likely I'd of thought? How old are they? high milage etc? Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 14, 2007 (edited) purchased in 2002, done 12.000 miles sat in a garage most of the time but since chopping the stops the front is decked Edited April 14, 2007 by GTI6BOY Share this post Link to post Share on other sites
Grez4 2 Posted April 15, 2007 They may be ok, it could just be that they are designed to give a really big drop. Do you know what springs they are? Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 15, 2007 no, they were on the car when i got it Share this post Link to post Share on other sites
Discostu 6 Posted April 15, 2007 I'v got 50mm springs on the front of mine and the bumpstops have been cut down. Never had any issues with handling or any knocks or bangs. I'm running adjustable dampers aswell tho so maybe thats why Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 15, 2007 me thinks its time for some koni sports suspension then Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 15, 2007 I have just measured from the floor to the wheel arch straight through the centre of the wheel and theres 20mm difference on 1 side? Share this post Link to post Share on other sites
Discostu 6 Posted April 15, 2007 Thats really not good Check for any damaged suspension components. Have u assembled the spring top cap and associated parts correctly? Share this post Link to post Share on other sites
Mikey S 29 1 Cars Posted April 15, 2007 I have just measured from the floor to the wheel arch straight through the centre of the wheel and theres 20mm difference on 1 side? if you have a 20mm discrepancy between each side its more than likely that you have a broken spring mate. Share this post Link to post Share on other sites
GTI6BOY 29 Posted April 15, 2007 Yeah there put together right. There is no bounce when you push down on the wing. The springs are intact but i can compress them with my hands very easily Share this post Link to post Share on other sites
