1st and 2nd gear wobble?

Discussion in 'Suspension, Brakes, Wheels & Tyres section' started by Bowen, Oct 12, 2016.

  1. Recently fitted bilstien B14 coilovers. I then had a clonk noise over bumps.

    Replaced track rod ends as they were worn and making a slight noise. The original clonk remained. Found the culprit as a loose lower arm bolt, tightened it up and the clonk had gone! Hoorah!

    Now I've noticed, that in 1st and 2nd gear when giving it a bit/ holding it between 1k-2k rpm, the car feels wobbly. At high speeds in gears above 2nd, it's not present. As a passenger you can't feel it, as the driver you can feel it through the wheels and pedals. It's only a minor feeling but it is there and it wasn't before fitting coilovers.

    What could this be?

    Cheers
     
  2. -Jamie-

    -Jamie- RSM Moderator

    Too low?

    I know Mike has a similar issue when he first fitted his as he went pretty low, wound them up and it disappeared
     
  3. I'm reading the issues you're having here Bowen and I'm thinking I might just go for new oe dampers, cooksports and some top mounts........

    On the issue with the car, we will rule out a heightened sensitivity due to your other issues and assume that there is infact an issue.

    It must be suspension/chassis related,

    So first I would again recheck everything is tight, including especially hub end drive shaft bolts, making sure the shaft is well seated.

    Try a front to rear wheel switch, just incase a rear wheel has found its way onto the front in the melee of swapping everything over, a small buckle or imbalance wouldn't really be that obvious from the rear.

    Raise the ride height as high as it will go on the bilsteins. See how it feels.

    Do you have drive shaft spacers in?

    Dale.

    Sent from my HTC One_M8 using Tapatalk
     
  4. Thanks for the replies.

    I really rate the blistiens and I don't feel the fault is with them as it were.

    The wobble is very small but it is there. You can see the pedals moving slightly. Imagine being in 3rd gear and letting the revs drop a little too low, that's the sensation. At high speed there is no vibration.

    The height is set at maximum, there are no more threads left on the coilovers to wind.

    And yeah driveshaft spacer fitted.



    IMG_2515.JPG
     
  5. Bushings?
     
  6. -Jamie-

    -Jamie- RSM Moderator

    Weird, mine looks near enough stock if they are wound all the way up
     
  7. I was going to ask, is it really that low in the highest position, seems weird to me.
     
  8. Yeah you mentioned that before, what would cause it to be so low when they are fully wound.

    Just so I'm not winding the wrong way, the collars are all the way at the bottom; so that's highest yes? Lol
     
  9. I would of thought winding the collar to the top would make it higher
     
  10. -Jamie-

    -Jamie- RSM Moderator

    No that's lowest haha! Wind the other way dude
     
  11. FFS! The garage doing fitting said "yeah that's the heighest" and i thought it looked low?!

    So currently the spring is fully extended and there is no thread below the spring?

    Christ alive. Anyone know anywhere is South Wales that could adjust coilovers and corner weight etc!

    Massive face palm here.
     
  12. IMG_2518.PNG
    Not my picture but the collars there are in the middle, so...

    If the spring is fully extended, (collars wound down) that would mean the car is at its lowest?
    Spring compressed, (collars up) car raised correct?

    In my head that doesn't work out right.

    Long day at work. Sorry.
     
  13. -Jamie-

    -Jamie- RSM Moderator

    Yeah that's right, lower the spring perch is lower the car sits and vice versa. I'd be avoiding that garage in future if they can't even get that right, just wind them up themselves and get the tracking done, corner weighting is a waste of time on a full trim road car.
     
    Bowen likes this.
  14. Oli

    Oli


    The spring is compressed the same whatever height it is set to, it is the weight of the car compressing the spring which is governing spring length, which isnt changing (as far as we are concerned in this explanation, as it will change marginally as weight transfers around due to the differences in height) when you adjust the height. You are just changing how high up the strut the spring sits. So the higher up the strut the spring sits up the strut, the higher the top of the spring/top mounts/height of the car.
     
  15. There we go then, there's always a solution. Agree with Jamie, set it with a tape measure dude, corner weighting a road car is all but pointless.

    Sent from my HTC One_M8 using Tapatalk
     
    Bowen likes this.
  16. Spoken to a decent garage who are renowned in South Wales for alignment and corner weighting. When I spoke to them they mentioned they do corner weighting, I'll pass on that.
     
  17. If you have a trolley Jack, and some C spanners from your fitting kit, you could do this yourself dude. It's painfully easy.

    Sent from my HTC One_M8 using Tapatalk
     
    Bowen likes this.
  18. It is, but he'll probably need to get it re-aligned after the ride height is changed, particularly if he's going up a fair amount

    When you raise the car, the toe will change (think it'll add toe out) and it'll affect camber also
     
  19. Think we need to fix the noises first, the minute wheel alignment changes from raising and lowering the ride height aren't worth worrying about at this stage.

    Sent from my HTC One_M8 using Tapatalk
     
  20. Bumping this.

    Had the wheel alignment done (again) and corner weighted etc. The garage included in the corner weighting in the price.

    I still get a wobble in 1st and 2nd between 1.5k and 2.5k rpm, from 2.5k rpm and above nothing.I could just be being sensitive and a hypochondriac, and possibly a normal person wouldn't notice but as a petrol head I can tell.

    Also had track rod ends. TIA!
     

  • Share This Page