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Braking Problem


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#1 BlueminiJohn

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Posted 24 February 2018 - 10:55 AM

Hi,

Any advice on this would be appreciated. I've got a wildwood setup on the front and the standard z cars disks and calipers on the back. All the brake lines are the braded type from z cars and I have the wildwood pedal box with 2 x .75 master cylinders(which I've been assured are more than adequate as other cars are running them).

The car has failed it's MOT horrifically on the brakes and I have to agree. The MOT tester just said that they do nothing and again I agree having had a cheeky spin in it outside the testing center. They're very poor!

Basically the setup is what I've said above and the brakes have been bled very thoroughly. Someone suggested that the pads might be wrong? Asin I've got a racing type pad that needs to get warm before it's effective? Would that make that much difference?

I'm at a bit of a loss. The brakes haven't been "bedded in" obviously but the tester said they still shouldn't be that bad. I've cleaned everything thoroughly with brake cleaned too to ensure no grease or anything has settled on them during the build..

Any ideas anyone?

#2 KTS

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Posted 24 February 2018 - 12:13 PM

how does the pedal feel - is it solid or spongy ? is there much travel in it ?

 

is braking poor on all four wheels or just the fronts ? - i've got no experience of the  willwood pedal boxes, but is each master cylinder running a separate circuit ?  if so, is the balance between them set up right ?


Edited by KTS, 24 February 2018 - 12:28 PM.


#3 BlueminiJohn

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Posted 07 March 2018 - 09:23 AM

Thanks for the reply!

It is a bit spongy yes. But they've been bled... There is a lot of travel, seems to go a good way down. The breaking is much worse on the front than rear. I think the rears would be ok. One cylinder runs the front and one tree rear.

#4 KTS

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Posted 08 March 2018 - 08:21 PM

if it's spongy it's suggests there's still air in the system - if you pump the pedal does it firm up..and travel less ?

 

if the rear brakes are better than the fronts then it sounds like part of the solution is going to involve getting more brake pressure/fluid to the front or reducing the amount that goes to the rear - does the pedal assembly include a means to do this ?  if so have you tried adjusting it ?

 

as i said before, I've got no experience of this brake setup, so rather than guess I'll wish you luck and hope someone who else who does have some hands on knowledge can offer some advice






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