Fox Brake lines hitting bump stops

keel

Active Member
Aug 23, 2020
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Seattle, Wa
I’m running LMRs hard brake lines for disc brake conversion on my Fox and I ruptured a brake line by what looks like slamming it into the bump stop on the axle. Has anyone else experienced this? How can I fix this without removing the bump stops?
 

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Yes, bend the brackets - more accurately twist them to change the angle slightly so the fitting and tube coming out will miss the bump stop. Also, the brake lines should be tighter up against the axle tubes. There is usually a hold down clip on each axle tube about midway along the axle tube (one mounts with the axle vent).

Brake line holder.webp
 
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Yes, bend the brackets - more accurately twist them to change the angle slightly so the fitting and tube coming out will miss the bump stop. Also, the brake lines should be tighter up against the axle tubes.
They were nice and tight against the axle tubes until the metal part of the bump stop bracket pushed them away from the axle.

It's weird that there is no mention of having to do these modifications on LMRs website or install video. All the parts I used were recommended for the install.

These lines were installed like this for ~3000 miles so I'm glad it happened when I was close to home! Got the brake light on the dash and I thought there was something wrong with my parking brake sensor but turns out I was losing fluid fast.
 
If the dark spot on the axle tube is where the bump stop hits, you shouldn't have needed to modify the brackets. Is the axle moving side to side excessively.

When I did my 5 wheel disc conversion I just used SN95 hoses/brackets.
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If the dark spot on the axle tube is where the bump stop hits, you shouldn't have needed to modify the brackets. Is the axle moving side to side excessively.

When I did my 5 wheel disc conversion I just used SN95 hoses/brackets.
The rubber part of the bump stop clears (barely), the metal part of the bracket sticks out about 1" closer to the brake line which is what sheared through my brake line. I could see witness marks on the metal.

I used 94-95 brake hoses. Which makes me wonder if those cars got a redesigned bump stop situation.
 
If you switch to the SN95 rear shocks more specifically the Bilsteins then you can remove the bump stops and the brackets as the SN95 shocks have the bump stops built in. I would keep the pinion snubber though.
 
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