mac1976
Member
Registered: 29th Dec 06
Location: tullibody , clackmannanshire
User status: Offline
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am going to be putting disks on the rear of ma corsa and have been told to run a in car adjustable bias valve how do these work
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Dave-Creations
Member
Registered: 28th Dec 06
Location: IRELAND
User status: Offline
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u need to worry about it mate, i just got mk3 astragsi brakes on my corsa, you got nothin to wrry about, unless ur rear brakes are considerably bigger than the fronts. my fronts are 256mm calibra brakes, the back are 260mm. under heavy braking she will twitch on teh back end, yet to meet a corner in that situation tho 
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csweatherston
Member
Registered: 16th Jan 06
Location: Devon
User status: Offline
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its advisable to fit a bias valve.
(some calibras came with inline bias valves)
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Dave-Creations
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Registered: 28th Dec 06
Location: IRELAND
User status: Offline
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would u really need the bias valve tho??? its only the load adjuster on the back that needs to be altered to compensate.
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Ben ev
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Registered: 23rd Oct 05
Location: kingslynn / torquay
User status: Offline
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look on ebay for a bias valve mate. there easy to fit. they a a simple valve with a adjustable knob on the top which controls the amount of fluid to the rear brakes. no electronics involved, much like a bleed valve for a turbocharger. if you dont fit one and nail the brakes it'l go round in a circle as i twice found out doin over 80mph. not very nice when it does
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mac1976
Member
Registered: 29th Dec 06
Location: tullibody , clackmannanshire
User status: Offline
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thanks for this so a take it you got to run the brake lines in the car for this
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csweatherston
Member
Registered: 16th Jan 06
Location: Devon
User status: Offline
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only if you want the valve in the car....
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mac1976
Member
Registered: 29th Dec 06
Location: tullibody , clackmannanshire
User status: Offline
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would it not be a pain in the rear if you want to adjust it tho
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Cossie
Member
Registered: 17th May 02
User status: Offline
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I got mine from mtech germany as better to spent a bit of £££ than risking your life !!
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csweatherston
Member
Registered: 16th Jan 06
Location: Devon
User status: Offline
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for a road car, once its set you wont want to adjust it again mac1976 
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mac1976
Member
Registered: 29th Dec 06
Location: tullibody , clackmannanshire
User status: Offline
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cheers so the ones a have seen there is a inlet and a outlet but the corsa has 2 pipes going to the back so how do you do this then 
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Cossie
Member
Registered: 17th May 02
User status: Offline
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you need one for each pipe !
[Edited on 28-12-2007 by Cossie]
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Ben ev
Member
Registered: 23rd Oct 05
Location: kingslynn / torquay
User status: Offline
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you could either swap for a master cylinder with 2 outlets which i think is the best option, or use a 2into1 union and join the rears before the bulhead and then split again afterwoods.
i use a 4 outlet one and have blanked one of the pressure outlets to the rear
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