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Bump stops 
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Joined: Thu Aug 06, 2009 10:38 am
Posts: 17
Post Bump stops
I have a 1986 13 inch coupe.
The top suspension arms have a block and plate welded on top to contact the bump stop rubbers. This reduces travel of the top arm by 1 inch. This almost stops the back tyre from going into the wheel arch but the front of the car needs to come down but will be resting on the bump stops.
Has anyone seen this before, was it a factory thing or was it the builders work?
I intend to remove the front ones but not the back, unless there is a reason for them.
John


Mon Oct 16, 2017 11:39 am
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Joined: Wed Sep 30, 2015 8:25 pm
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GTM: Cox/Coupe
Post Re: Bump stops
To my mind that is not correct. but a photo would help.


Mon Oct 16, 2017 12:56 pm
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Joined: Wed Jul 31, 2013 11:47 am
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Location: Kano north Nigeria
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Post Re: Bump stops
The standard mini upper arms have a flat bit on top to contact the bump stops on full compression, if you increase the height oft his flat bit you will reduce suspension travel.
John


Mon Oct 16, 2017 2:06 pm
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Post Re: Bump stops
Yes, a photo would help, but it will take me a few days to do it.
The blocks are welded on top of the flat on the top arms.
This will reduce travel.
I have hi-lo's. The back was low and the tyres were catching the arches on bumpy b roads. The back is as recommended by the factory and not catching anymore. The front is running high.
I think it was done by the builder to clear the arches when running 13 inch on mini suspension. The wheels are factory Allycats on 175 or 185 50. So not that tall.
John


Mon Oct 16, 2017 4:12 pm
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Looking like a GTM

Joined: Wed Sep 30, 2015 8:25 pm
Posts: 155
GTM: Cox/Coupe
Post Re: Bump stops
There are lots of GTM's with 13" wheels where the owner hasn't welded a block on the top arm to get the clearance. sounds like a bodge because the guy couldn't set it up properly.


Mon Oct 16, 2017 11:27 pm
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Joined: Wed Jul 31, 2013 11:47 am
Posts: 893
Location: Kano north Nigeria
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Post Re: Bump stops
I used to run a Cox made for 10" wheels using 175-50x13" in the early 1980's without touching the arches, 50 series tyres were chosen as the rolling radius was only very slightly bigger then 165-70x10, I did have to extend the arches as the race scrutineers objected to the tyres sticking out slightly, but never had to cut the arches to give clearance.
John


Tue Oct 17, 2017 7:40 am
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Joined: Mon Dec 30, 2013 11:51 am
Posts: 78
Location: West Yorkshire
GTM: Cox/Coupe
Post Re: Bump stops
Sounds a bit like the Hydrolastic Mini bump stops which fit on the flat section and are held in position using the shock absorber mounting bolt...

https://www.minispares.com/product/Clas ... o%20search

Is there a pointy bump stop on the top section of the subframe?

https://www.minispares.com/product/Clas ... o%20search


Tue Oct 17, 2017 9:48 am
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Location: Kano north Nigeria
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Post Re: Bump stops
I used the bigger Hydro bump stops on the rear, they used to be sold as competition bump stops and the standard mini bump stops mounted on the subframe at the front,
John


Tue Oct 17, 2017 10:11 am
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Joined: Thu Aug 06, 2009 10:38 am
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Post Re: Bump stops
Hello Andy,
It is not the wet suspension parts. The rubber bump stop is pointed, conical and the block is not bolted with the damper.

I think I will keep the back ones as I have raised the back to recommended and the suspension is so stiff I can't see the bump stops getting used.
The front raised platforms will go, so I can lower the front of the car.

John


Tue Oct 17, 2017 11:26 am
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