I've never been able to get rid of the pedal travel in mine. It's decent enough but it's still not great.
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Phase one GSi rear brake valves
- Thread starter TomF
- Start date
I still have travel without abs on a 23mm master cylinder. Not much though, quite scary getting back in the daily after driving the estate lol
What calipers do you have on the front?
Ah ok.
I'm in v6 calipers, but the pedal has never been amazing. Driving my mk4 the brakes feel sharp and responsive. The mk3 brakes feel spongy and wooden, although they still stop well with some effort. Not helped sitting for 6 months getting rusted up though.
There must be a way to improve it though.
I'm in v6 calipers, but the pedal has never been amazing. Driving my mk4 the brakes feel sharp and responsive. The mk3 brakes feel spongy and wooden, although they still stop well with some effort. Not helped sitting for 6 months getting rusted up though.
There must be a way to improve it though.
I adjusted the pushrod on mine made it loads better!!
Todd100
Club Member
There pushrod where the pedal goes onto the back of the servo?
Yeah,obviously you can't adjust it massive amounts but I had a play around with it and my pedals spot on!! I'm running calibra turbo servo and master cylinder(if I remember correctly?) With ap 4pots on front cav v6 on rear and inline bias valve! Do need some of these valves that tom's after though because its still slightly nervous on the back when on track
Just did couple turns at a time and tried it out till I was happy
Todd100
Club Member
AndyB-Redtop These are the other type
Would anyone know if the brake compensator valves from a Corsa B will function ok on an Astra Mk3 GSi? They're the closest things i can find to what is originally fitted to the early Mk3 GSi's. I've got quite a serious problem with Bias, rear end locks on hard braking.
Todd - I've discovered (From research) that the load sensing valve that fixes to the rear axle you mentioned, won't work on a lowered car. Less travel on the axle which wont operate the valve effectively. Some say that lowering the car creates the locking up problem.
TomF - Did you get round to sorting the bias on your car? (Sorry, i know this thread is quite old)
Any thoughts on the compensator valves below that fit Corsa B ?
Todd - I've discovered (From research) that the load sensing valve that fixes to the rear axle you mentioned, won't work on a lowered car. Less travel on the axle which wont operate the valve effectively. Some say that lowering the car creates the locking up problem.
TomF - Did you get round to sorting the bias on your car? (Sorry, i know this thread is quite old)
Any thoughts on the compensator valves below that fit Corsa B ?
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Todd100
Club Member
I've not personally had an issue and mine is lowered, but never really had to brake mega hard, all I can find on the standard one is that it's 8/3 the valve, not sure what that means though
Andy I cant comment on the suitability of Corsa valves but can see them going some way to helping with yours locking up, will certainly be better than having no valves in at all !
The load valve is adjustable according to haynes, theres a sliding bolt that you move to keep tension on the spring depending on your ride height.
I adjusted the pushrod on the master cylinder to get rid of almost all the free play/travel and it made the pedal feel a hell of a lot better..
The load valve is adjustable according to haynes, theres a sliding bolt that you move to keep tension on the spring depending on your ride height.
I adjusted the pushrod on the master cylinder to get rid of almost all the free play/travel and it made the pedal feel a hell of a lot better..
Yes mate pedal push rod into servo, theres a lock nut to undo the turn the rod to adjust then retighten nut
Yes mate pedal push rod into servo, theres a lock nut to undo the turn the rod to adjust then retighten nut
Awesome tip, cheers mate