Hi,

you may be aware I'm trying to recommision my Granada and hopefully get an MOT on it too.

Have been running it fine where it has sat (for 6 years). I have done loads of work and slowly, finally getting there. Turned it around today and realised that my excellent brake pedal didn't = excellent brakes good job it was a 3 point turn on my drive.

I have a bias pedal box fitted (no servo) with 335 discs and Monster 4 pots. On the rear I have Cossie 4x4 set up.

I went to this set up as I was cooking standard stuff. This car was a dedicated track car and so chose this direction. I can now recall that the braking effort was always greater than it used to be but once I got heat into the brakes then I could manage.

Now, for a road car this is not acceptable. I have had all 4 corners off the car to check over brakes, bearings and suspension etc and all is good with nothing siezed.

What is a hard pedal and no stopping indicative of? Any ideas maybe from the mk1 / 2 Escort fraternity as they run bias boxes.

I am tempted to go Cossie pump (non ABS) but would like to retain what I have.

I have a .700 front cylinder and a .625 cylinder for the rears. I am running Mintex race pads front and green stuff rears all with braided lines throughout feeding Castrol SRF to the 4 corners.

What say you?

 

i always assumed that a cosnada was a cosworth from canada

 

Hard pedal and loads of force to stop it is due to no servo assistance i'd have said, unless all or a couple of calipers/pistons are seized (dust seals in the big brakes??)

 

Lol, its a mk 2 Granada with a Cossie in it.

No servo and I replicated what was comonly used on other cars with not too disimilar set ups. If it had a sevo and I had the issue I would deffo say its poor assistance. That said I am on a bias set up and should be completely capable of what I need.

Might have to look at the bias bar for bind etc.

 

non servo assisted brakes do require a hell of a lot of pedal effort to work, imagine trying to compress a brick with your foot lol. you do get used to it eventually tho

 

I remember this when I first did the conversion I was worried about it but I did loads of track days and never once had an issue of not stopping - I need to get brave lol.

 

I had the same problem on my mk1 escort with pretty much the same spec as you, i installed a remote servo and it cured the problem.
Burton power told me that the .625 were for the front and .700 for the rear, I don't know if that's correct or not now

 

With the right sized cylinders non servo brakes should work fine if all in order, i do know from experience that the wrong bore cylinder causes major problems with pedal effort as I used to run a mini with front discs and never changed the master cylinder was a massive difference when I fitted the correct one.before trying to fit a servo take some advice from a brake specialist regards cylinder bore choice.

 

I did that at the time and the general concensus was that the combination I have ended up with was the one to go for.

I would like some improvement but I don't want to be at the stage of having to swap out MC's 'just to see' etc. The fronts were a pig to bleed lol.

 

take a calliper of the disk & support with a piece of wire and pump the peddle ... should see movement! if not it could be seized. try to rotate a bit to free off. try each side at front to start!

 

All free - just had all 4 corners off to give a complete check over etc.