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172 Cup - Rear brake compensator dismantled and question on bypassing.



So guys.

I stripped down the compensator to see what was what. I understand the mechanics of how these work in general. But am I right in saying that because the level isn't attached to anything, the compensator never changes the bias, as intended on my 172 Cup.

Now.. the next point. I don't believe I can simply remove this and go straight back to the master cylinder as there is still a preset value in the valve.

Questions:

1) In it's current state is the bias set and can I just install that block in inline in the plumbing inside the car when I lay new lines.

2) Can I just remove that altogether and install a brake bias level inside the car to set the correct value.

3) Does anybody know what the actual bias is on these cars and how can I test/calibrate brakes. How is it done on race cars?

Thanks a lot guys.

Has anybody else ever rebuilt one of these before?

WhatsApp Image 2021-04-18 at 17.34.43.jpeg
 

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  RS Clio Cup172
My rsports specialist changed my rear brake lines and said that one rear brake was not receiving any fluid and that it's this valves fault. Any ideas or similar experiences? Mines a CUP172
 

16v_paddy

ClioSport Club Member
  Valvers & 172 Cup
My rsports specialist changed my rear brake lines and said that one rear brake was not receiving any fluid and that it's this valves fault. Any ideas or similar experiences? Mines a CUP172
I had exactly the same on mine, also had it briefly after fitting a new compensator when I had to fit a new caliper but that was more of an issue with how I was bleeding it

Getting a new valve should deffo fix the problem, showing as available on Autodoc atm https://www.autodoc.co.uk/bosch/671793
 

Mr Trailer Man

ClioSport Club Member
I had exactly the same on mine, also had it briefly after fitting a new compensator when I had to fit a new caliper but that was more of an issue with how I was bleeding it

Getting a new valve should deffo fix the problem, showing as available on Autodoc atm https://www.autodoc.co.uk/bosch/671793

Bit cheaper here

 


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