Bias pedal box
06-03-2009, 08:59 PM
#1
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Bias pedal box
I'm after advice from people who run or have run bias pedal boxes.
I am looking to repipe my brakes and swap the servo for a bias box and a pair of master cylinders on my Series 1, which has AP 4 pots (315mm discs) on the front and 2wd Cossie calipers (270mm discs) on the back.
Any ideas on what size cylinders I would be best off trying?
It's a fully trimmed car estimated weight just over 1000kg's if it makes any difference.
I am looking to repipe my brakes and swap the servo for a bias box and a pair of master cylinders on my Series 1, which has AP 4 pots (315mm discs) on the front and 2wd Cossie calipers (270mm discs) on the back.
Any ideas on what size cylinders I would be best off trying?
It's a fully trimmed car estimated weight just over 1000kg's if it makes any difference.
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07-03-2009, 11:57 AM
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The pedal ratio is the same as the standard pedal. I should have said it's a bias box which replaces the servo, not a complete pedal box.
So what is the reason for the larger displacement cylinder feeding the smaller capacity rear calipers as per Spiky and Martin's reply?
So what is the reason for the larger displacement cylinder feeding the smaller capacity rear calipers as per Spiky and Martin's reply?
07-03-2009, 07:08 PM
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Is there somethnig fundamentally wrong with the design/build/materials.....anyboby?
08-03-2009, 09:46 AM
#14
Right
I fitted my " compbrake " bias pedal box and the ajusting bar hits the steering coloum unless the pedal is pressed until about 2 inch from the floor
I checked everything but simply couldnt get it to fit without it hitting .
I rang Tony who told me to contact the owner of combrake who gave me the same bullshit story he gives everyone when the ring and say somthing doesnt fit etc , He then gave me the contact number of the man who makes the pedal boxes for them
I rang this fella 4 times and left 4 messages to ring me back and gave a quick explanation of my problems
,,,,,,,,STILL NO FOOKING RETURNED CALL ,,,,,,,,,
Ps, Tony
I put the ballance bar in the correct way , BUT , just to assure myself i tried it in both ways , and it hits no matter what i do
I fitted my " compbrake " bias pedal box and the ajusting bar hits the steering coloum unless the pedal is pressed until about 2 inch from the floor
I checked everything but simply couldnt get it to fit without it hitting .
I rang Tony who told me to contact the owner of combrake who gave me the same bullshit story he gives everyone when the ring and say somthing doesnt fit etc , He then gave me the contact number of the man who makes the pedal boxes for them
I rang this fella 4 times and left 4 messages to ring me back and gave a quick explanation of my problems
,,,,,,,,STILL NO FOOKING RETURNED CALL ,,,,,,,,,
Ps, Tony
I put the ballance bar in the correct way , BUT , just to assure myself i tried it in both ways , and it hits no matter what i do
Last edited by Mr RS500; 08-03-2009 at 09:48 AM.
20-05-2009, 07:41 PM
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i have compbrake parts
bias box
alloy hubs
bearing kit
brake lines
res bottles
no problems at all
and will be looking to buy brakes onces in ready for them.
bias box
alloy hubs
bearing kit
brake lines
res bottles
no problems at all
and will be looking to buy brakes onces in ready for them.
20-05-2009, 08:31 PM
#18
Too many posts.. I need a life!!
Right
I fitted my " compbrake " bias pedal box and the ajusting bar hits the steering coloum unless the pedal is pressed until about 2 inch from the floor
I checked everything but simply couldnt get it to fit without it hitting .
I rang Tony who told me to contact the owner of combrake who gave me the same bullshit story he gives everyone when the ring and say somthing doesnt fit etc , He then gave me the contact number of the man who makes the pedal boxes for them
I rang this fella 4 times and left 4 messages to ring me back and gave a quick explanation of my problems
,,,,,,,,STILL NO FOOKING RETURNED CALL ,,,,,,,,,
Ps, Tony
I put the ballance bar in the correct way , BUT , just to assure myself i tried it in both ways , and it hits no matter what i do
I fitted my " compbrake " bias pedal box and the ajusting bar hits the steering coloum unless the pedal is pressed until about 2 inch from the floor
I checked everything but simply couldnt get it to fit without it hitting .
I rang Tony who told me to contact the owner of combrake who gave me the same bullshit story he gives everyone when the ring and say somthing doesnt fit etc , He then gave me the contact number of the man who makes the pedal boxes for them
I rang this fella 4 times and left 4 messages to ring me back and gave a quick explanation of my problems
,,,,,,,,STILL NO FOOKING RETURNED CALL ,,,,,,,,,
Ps, Tony
I put the ballance bar in the correct way , BUT , just to assure myself i tried it in both ways , and it hits no matter what i do
To be fair paul (and i havnt got a Compbrake one or have any association with Compbrake) there is very little room for error when fitting a bias pedal box in a 3 door..i made mine and its very close to the steering column and i run a Grp A column without all that compression shit on the standard column
oh and do this if its not too late to save your size 11's bending your bulk head
31-10-2010, 04:45 PM
#29
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Sorry to bring a very old thread back to life but im looking at getting one of these compbrake pedal box conversions for my series2. Has there been any development with the replacement that does away with the bar?
Can anybody else recommend compbrake, or maybe another make which is a direct fit.
Can anybody else recommend compbrake, or maybe another make which is a direct fit.
31-10-2010, 07:47 PM
#30
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Sorry to bring a very old thread back to life but im looking at getting one of these compbrake pedal box conversions for my series2. Has there been any development with the replacement that does away with the bar?
Can anybody else recommend compbrake, or maybe another make which is a direct fit.
Can anybody else recommend compbrake, or maybe another make which is a direct fit.
there is someone doing a escort on the resto room with a pedal box that shows you what to do beefy started it for some one
Last edited by anodised; 31-10-2010 at 07:49 PM.
01-11-2010, 07:35 AM
#32
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i'll forget about losing the bar then. Might just get that pedal box twin master cylinder thing from compbrake as i think my brake servo is knackered anyway.
01-11-2010, 09:13 AM
#33
years and years ago i bought a pedal box and stuff from burtons
cost about £3-400 all in with the pipework, can't remember as it was a long long time ago but my isues were getting the resivours to sit properly wihtout dropping lower than the cylinders they were feeding
this was a fit in the engine bay box rather than fit under the dash box
cost about £3-400 all in with the pipework, can't remember as it was a long long time ago but my isues were getting the resivours to sit properly wihtout dropping lower than the cylinders they were feeding
this was a fit in the engine bay box rather than fit under the dash box
01-11-2010, 11:02 AM
#34
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Ive since learnt that fitting one of these will make stopping in normal on the road driving conditions a nightmare.
Can anyone suggest a good brake setup for me? I currently on my series2 rst have the non abs set up with the proportioning valves in engine bay and i have cossie calipers and discs all round. We bleed the brakes up a few times but pedal feel was never great, plus the car hasnt moved yet has lost brake fluid, theres no patches on the garage floor either, knackered servo?? master cylinder leaking into servo?? Really dont know what to do.
Can anyone suggest a good brake setup for me? I currently on my series2 rst have the non abs set up with the proportioning valves in engine bay and i have cossie calipers and discs all round. We bleed the brakes up a few times but pedal feel was never great, plus the car hasnt moved yet has lost brake fluid, theres no patches on the garage floor either, knackered servo?? master cylinder leaking into servo?? Really dont know what to do.
02-11-2010, 08:49 AM
#37
No worries mate 
when I was doing mine I also thought it was going to be a good thing but you need legs like arnolds to press the pedal to give you the same stopping power 
Then I went remote servo and that was for the front curcit so it braked much better and I was able to adjust the bias front and rear. It's total overkill for a road car though and if you can find a normal servo master cylinder combo that does the job you will be so much better off
Someone is the rsturbo room is doing a mk5 swap which looks good but if you are bolting stuff into a sierra then you simply use the servo and m/c combo from any dohc sierra from 90/92 as they all came equipped with discs all round
when I was doing mine I also thought it was going to be a good thing but you need legs like arnolds to press the pedal to give you the same stopping power Then I went remote servo and that was for the front curcit so it braked much better and I was able to adjust the bias front and rear. It's total overkill for a road car though and if you can find a normal servo master cylinder combo that does the job you will be so much better off
Someone is the rsturbo room is doing a mk5 swap which looks good but if you are bolting stuff into a sierra then you simply use the servo and m/c combo from any dohc sierra from 90/92 as they all came equipped with discs all round
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