How to adjust rear wheel height from ground

Various setups, tips, etc.

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Miketakeahike
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How to adjust rear wheel height from ground

Postby Miketakeahike » August 15th, 2013, 8:03 pm

I have a problem with MOT with my ground Control sleeves installed.
When they lift the car the shocks extend fully and the springs come "loose",
and this will not pass the MOT.

Is it possible to adjust the rear wheels drop length when hoisted on a lift?
(hanging free in the air)

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Re: How to adjust rear wheel height from ground

Postby MinkelR » August 15th, 2013, 9:47 pm

Sway bar might help to limit it. Not sure if it will completely seat it though.
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Re: How to adjust rear wheel height from ground

Postby qikteg » August 16th, 2013, 1:27 am

i don't see how this would differ whether you're using coil over sleeves, lowered or stock springs. when lifted like that the springs will lose tension because there is nil load on them, and they would be loose. i guess coilover sleeves would appear "looser" because they're shorter than springs. is that the issue? if so, for the purposes of MOT, can you have the sleeve wound up to maximum height so that it least reduces the appearance of "looseness", and then just wind it back down after MOT

otherwise, shortened shocks? from what i remember when i pulled the shocks out altogether from my doner car, i think there is a limit to the rotation of the rear trailing arms. perhaps you can fabricate something to reduce that limit of that rotation? taking into account that under normal driving circumstances, your rear shocks will never be at full extension, it would only need to be capable of bearing the rotational weight, and not necessarily structural.

think adjusting bolts, just like with the torsion bars up front.
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Miketakeahike
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Re: How to adjust rear wheel height from ground

Postby Miketakeahike » August 16th, 2013, 6:29 am

Yes I could probably adjust them to the top.

I havn't really researched this because I am used to the mcpherson suspension,
but I will most def check out the trailing arms.

Shortening the shocks, wouldn't that put more stress on them when the Wheels hang free, because it's not the shocks that holds the Wheels up right?
Also the rod going down in the tube, if I cut it, is it solid steel or is it a pipe, could be hard to make a new thread on a pipe.
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Re: How to adjust rear wheel height from ground

Postby qikteg » August 16th, 2013, 7:11 am

I was thinking of products off the shelf like Koni or eibach(?) which make shortened shocks. obviously this is not a cost or time effective measure (not sure of the availability of shortened shocks, pretty low i think), and i don't know how much shorter the rod is than stock. may not affect the outcome at all.

with the beam axle configuration, the shocks act as the verical locater. without the shocks mounted to the axles, the trailing arms rotate freely (ie are only connected to the chassis at the rear trailing arm bush. the beam axle/panhard rod keep both axles at (roughly) the same position.

do you know what the MOT criteria is with respect to the "looseness" of the springs...? i don't think that the extension of the shock is any longer than it should be, it may appear that way because the fronts have the torsion bars providing load against gravity, thus do not hang as low.

this is just my interpretation, i could be way off base.
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Re: How to adjust rear wheel height from ground

Postby redteg73 » August 31st, 2013, 10:16 pm

What if you just used some metal zip ties to hole everything from dropping.

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Re: How to adjust rear wheel height from ground

Postby Mr NW Classic » September 1st, 2013, 9:54 pm

That is normal for these cars. I don't get what the issue is.
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