View Full Version : Rear disc with astra servo/m cylinder
Eveing folk, just a quick on for you, Im running a mk3 astra servo and master cylinder on my car, which i will be using rear discs with.
The question is do i need a bias valve to run this set up or does the cylinder set the pressure for this
craig green
05-11-09, 06:11 PM
The cylinder should have the ideal proportioning valves if its from a 'disc' car. If its an ABS one it wont. Tricky one to answer tbh.
If in doubt, block one rear outlet, fit an inline bias adujuster & then 'T' the line into 2 at the raer fpor each caliper (how I run mine).
Jon_nova1
05-11-09, 06:53 PM
Id fit a bias valve anyway, just because its alot better adjusting it rather than have the rear lock up
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