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Front Bottoms Out.

Jax
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Jax Collaborator

Jax

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Probably silly question, but ever since getting car R32 GTSt, 1992, Front suspension bottoms out VERY easily ( does'nt need a pothole), almost any reasonable irregularity in road surface will do. Car handles well, seems standard specs. Is this really normal?? Had car 3 or 4 or more years. Always been same.

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https://www.sau.com.au/forums/topic/178438-front-bottoms-out/
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ssshonky Grand Master

ssshonky

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is the spring rate correct? if you push down on the front guards ( just near the front wheel ) can you push it down fairly easily? or is it pretty firm ?

are you sure there is not a plastic guard hanging down further than the rest of the front bar?

Jax Collaborator

Jax

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Or are you using lowered springs with stock shocks? That'll do it as well..

james.

I always thought it was standard, but maybe not. I had a look under it to-day, and in theory there's plenty of suspension movement. Nothing to limit it, that I can see, but in fact it doesent move much before it bottoms out ( hard !! ). I came to conclusion it had to be limiting in the Shocks, somehow. Suspension not too soft, quite firm, so I think have to come down to mis-matched Shocks. Does anyone know where to measure the ride height, and what it is standard factory setting?..'92 GTSt. ?

2rismo Grand Master

2rismo

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I know it's off topic but reading the title of this thread didn't give me any hint that you were talking about cars. :D

Maybe the shocks are just shagged - take it to a suspension specialist and get it sussed out.

DJRIFT Veteran

DJRIFT

Posted
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same as above i thought you was sagesting some poron action.

anyway my r32 does this bad ever since instaling aftermarket springs on my standard shocks. i new this would happen but didnt realy mind to much. i finaly got around to getting it checked out by a suspension workshop and they saud the front shocks were shagged, the bump stops also needed replacing.

i am anly now 9months down the track getting some new front shocks to fix the proble. i will be happy if it does. i think if you check out sydney kids group buy on suspension you will find that he reccomends cutting the bump stops depending on ride height but dont do this with the standard stuff.

Jax Collaborator

Jax

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same as above i thought you was sagesting some poron action.

anyway my r32 does this bad ever since instaling aftermarket springs on my standard shocks. i new this would happen but didnt realy mind to much. i finaly got around to getting it checked out by a suspension workshop and they saud the front shocks were shagged, the bump stops also needed replacing.

i am anly now 9months down the track getting some new front shocks to fix the proble. i will be happy if it does. i think if you check out sydney kids group buy on suspension you will find that he reccomends cutting the bump stops depending on ride height but dont do this with the standard stuff.

NOW I really don't know what's the problem. Just had wheel off to have a good look. Could'nt find any bump stops from underneath car. Good reason I could'nt find them - There are none!!. Can't see any place where any such thing could be fitted,either. Don't understand what locates bottom of coils around shocks ( Bilstiens ), theres a plate there which just seems to "be there" around shock body. Can't see what keeps it there. About 100mm available movement on shock absorber, which would translate to about 170 / 180mm at centre of tyre. More than enough. Any more and tyre would touch inner guards. Only moves a FRACTION of that before it bottoms out on something. I really don't get it. What am I missing???

Jax Collaborator

Jax

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same as above i thought you was sagesting some poron action.

'mazing !!! Thought it was suggesting some porn action. Maybe later, when I've got over this problem. Does anyone know how to change name of thread, so more ppl look at it? If so, do it!! But is anyone sure that suspension probs will get more attention than porn ?????

Jax Collaborator

Jax

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bump stops are on the shaft of the shock. inside the coil.

Ta,

Looked there. That's where I have around 100mm available vertical movement, which should give plenty movement at tyre. I'll keep looking. There is an explanation for everything. There is no magic.

ssshonky Grand Master

ssshonky

Posted
Posted

yeah I too thought it was a " show us your front bottoms " type of thread.. but I tried to be helpfull all the same haha..

hey.. another thing you COULD do .. but its frought with possibilities to hurt yourself haah.

jack the car up and get it up on stands.

then get a trolley jack and see if you can stick it under the tyre or under the suspension arm to emulate the shock traveling over a bump.

Please dont miss my disclaimer about a strong possibility of self harm, or get a mate to do it and sit back with a few beers and enjoy the hilarity!

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