Dear Guru's, need some help with my brakes please.
I have a LX Torana, dual diaphragm brake booster with a vp commodore master cylinder with a built in proportioning valve. Four wheel disc brakes. front brakes are hq, rears are ford, everything is reconditioned, Bleeders are on top of calipers, lines are all new.
Have a nice brake pedal until I start the car, when started pedal goes to about 5mm off the floor.
Help please, it's doing my head in. Please no dumb ass replies
Brake Problems Heeeelp
Started by
_fleigh10_
, May 27 2017 08:25 PM
8 replies to this topic
#1
_fleigh10_
_fleigh10_
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Posted 27 May 2017 - 08:25 PM
#2
S pack
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Posted 27 May 2017 - 09:32 PM
If the booster pushrod into the master cylinder is too short it will give you a long pedal as there is too much free play to take up before the pushrod engages the m/cyl piston.
#3
Bigfella237
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Posted 27 May 2017 - 10:05 PM
Could be that the master cylinder diameter is too small for the total size of all the caliper pistons too, especially in a mix'n'match setup like yours?
Is it a 15/16" master cylinder by any chance?
#4
rodomo
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Posted 27 May 2017 - 10:08 PM
Have you bolted the wheels on?
#5
_fleigh10_
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Posted 28 May 2017 - 11:53 AM
Could be that the master cylinder diameter is too small for the total size of all the caliper pistons too, especially in a mix'n'match setup like yours?
Is it a 15/16" master cylinder by any chance?
no mate 1"
#6
_fleigh10_
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Posted 28 May 2017 - 11:58 AM
Have you bolted the wheels on?
and what will that do
If the booster pushrod into the master cylinder is too short it will give you a long pedal as there is too much free play to take up before the pushrod engages the m/cyl piston.
nope, thats been eliminated
#7
dattoman
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Posted 28 May 2017 - 03:12 PM
How about some pics... we all like pics
#8
_LS1 Taxi_
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Posted 28 May 2017 - 08:51 PM
My answers were going to be too dumb arsed.
#9
rodomo
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Posted 28 May 2017 - 09:26 PM
With out seeing your set up, hat type rotors don't sit square to the hub until the wheels are bolted on.and what will that do
Which will give a long pedal.
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