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Car sits higher on the passenger rear side.

Posted: Sat Feb 12, 2011 1:04 am
by ForceMajeure
I just had my suspension done a week ago (non adjustable Konis) and before i had it done my passenger rear wheel arch always sat around 1 inch higher than the drivers side to the tyre/wheel.

My suspension was quite shot before the change and i always thought this problem was because of me driving the car and not having a passenger very often, amongst other issues i had with worn suspension etc.

But now after a closer inspection and hoping things might have settled a bit with the new shocks i still have this same issue with the passenger rear sitting around 1 inch higher than the drivers side rear.

I'm pretty perplexed what this could be,

Previous accident damage before i owned the car?
A known quirk of early NB8A's?
A car originally meant to be LHD but made RHD?
Something to do with bushes?
None of the above or all of the above!

Any ideas on why this is and how i can go about rectifying it? :?

I will add photos later today to show the difference in how high each side sits.

Re: Car sits higher on the passenger rear side.

Posted: Sat Feb 12, 2011 2:29 am
by broady
Spring sag

Re: Car sits higher on the passenger rear side.

Posted: Sat Feb 12, 2011 11:33 am
by 93_Clubman
Not uncommon on NA & seems to be a few NB similarly affected. Not spring sag in all cases - have a look at both pages of following which demonstrates this:
viewtopic.php?f=30&t=36867

Re: Car sits higher on the passenger rear side.

Posted: Sat Feb 12, 2011 11:36 am
by ForceMajeure
broady wrote:Spring sag


I just got new springs also, so i can rule that out.

93_Clubman wrote:Not uncommon on NA & seems to be a few NB similarly affected. Not spring sag in all cases - have a look at both pages of following which demonstrates this:
viewtopic.php?f=30&t=36867


Cheers, dosnt look fixable bar coilovers then, nobody seems to have a difinitive answer. :(

Re: Car sits higher on the passenger rear side.

Posted: Sat Feb 12, 2011 6:28 pm
by tbro
OK, time to do some measurements.
First off measure all the centre of rims to guard heights and note down.
Second, measure the lower control arms from the same position on both front arms and both rear arme and record.
Third remeasure a fixed point on chassis rail on all four corners and record. ( you decide where on front and rear of chassis rails)
Fourth check camber bolts, the off set bolts , make sure that the front and rear plates are in the same position on each side of the bolt.If the rear on the r/h rear is at 11 o'clock that the front of the r/h rear is at 1 o'clock.Near enough is NOT good enough!!!

PM me with measurements and I'll work out how we can rectify your concerns. Will also need to know if you have any added accessories added to car, re: roll bars, bigger battery or amps, anything as you never know what can cause chassis/spring sag.
Also do you have std rims and tyres or aftermarket and are they all the same brand????

Terry

Re: Car sits higher on the passenger rear side.

Posted: Sat Feb 12, 2011 9:36 pm
by ForceMajeure
tbro wrote:OK, time to do some measurements.
First off measure all the centre of rims to guard heights and note down.
Second, measure the lower control arms from the same position on both front arms and both rear arme and record.
Third remeasure a fixed point on chassis rail on all four corners and record. ( you decide where on front and rear of chassis rails)
Fourth check camber bolts, the off set bolts , make sure that the front and rear plates are in the same position on each side of the bolt.If the rear on the r/h rear is at 11 o'clock that the front of the r/h rear is at 1 o'clock.Near enough is NOT good enough!!!

PM me with measurements and I'll work out how we can rectify your concerns. Will also need to know if you have any added accessories added to car, re: roll bars, bigger battery or amps, anything as you never know what can cause chassis/spring sag.
Also do you have std rims and tyres or aftermarket and are they all the same brand????

Terry


Thanks Terry, give me some time and ill get back to you with the measurements as im definately keen to get on top of this issue, i will post photos tomorrow if possible (its raining here ATM) so i cant do all this right now.

Thanks for the help BTW. 8)

Re: Car sits higher on the passenger rear side.

Posted: Thu Feb 17, 2011 12:03 pm
by hks_kansei
also have a look at how the new springs are fitted.

NA has a flat bottom perch (and as a result, the spring ends form a flat base), whereas the NB has a notched one (and therefore the spring ends abruptly and the end sits in the notch).

it's possible that the spring end isn't sitting in the notched bit and needs to be shuffled to seat correctly.

Re: Car sits higher on the passenger rear side.

Posted: Thu Feb 17, 2011 10:22 pm
by ForceMajeure
hks_kansei wrote:also have a look at how the new springs are fitted.

NA has a flat bottom perch (and as a result, the spring ends form a flat base), whereas the NB has a notched one (and therefore the spring ends abruptly and the end sits in the notch).

it's possible that the spring end isn't sitting in the notched bit and needs to be shuffled to seat correctly.


Springs sit fine, I have checked that BTW, but it sat the same before the suspension change, so that's definitely not it. I had a visual inspection under the car the other day and i can't see anything that stands out as being radically wrong, but i was on my back not up on a hoist or anything.

I guess i have to do the measurements that were suggested by member "tbro" but im not sure if i can do all those with the car on the ground or not at this stage. I'm hoping to have a closer look into this next week, im a bit busy ATM with work unfortunately.

Re: Car sits higher on the passenger rear side.

Posted: Mon Mar 07, 2011 9:46 pm
by ForceMajeure
I'm still working on finding out the root cause of this issue, after a suspension inspection last week no one is any the wiser as to why this is, its nothing obvious with any of the suspension arms etc.

My next thought is now the bump stops, i dont know much about them but my research points to them coming in different size heights, im wondering if they are either worn on the drivers side or different heights or both?

I did have the unfortunate instance of running over a curb on the drivers side to miss a cat a couple of years ago which realy bottomed out my previous shocks at the time.

Anyone have any thoughts on this as an idea?