Phil J Posted April 15, 2017 Share Posted April 15, 2017 I am building a prelit that came to me unfinished and very much not IVA compliant. At present it has M16 Cortina discs and callipers on the front and nine inch Escort or Capri rear drums. It was fitted with a single circuit braking system using the Escort pedal box. Apart from being able to say that it stop the car on the drive I didn't have enough of the car fitted to venture any further. For the purposes of IVA testing I am looking at finding a tandem system master cylinder, can anyone tell me what to get, bore size (make and model originally fitted to might be helpful)? Also are the rear drums going to give me too much braking force on the back end in which case I'll change them for something smaller, perhaps eight inch. I also have an AP racing upgrade callipers and vented disc kit but I am hoping to keep it simple to pass the IVA before fitting that but if it would balance out the big rear brakes I would do it now and even change the pedal box for an adjustable bias twin cylinder system but I just see that as another potential problem for IVA brake balance. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Thrustyjust Posted April 15, 2017 Share Posted April 15, 2017 Pre lit ( later fibre glass bonnet type) had Mk3 cortina master cylinders. This then tied up with the M16 front brakes and fluid volume. If I had to upgrade , then to find a master cylinder that fits this would be a start and maybe some bremsport or similar M16 alloy 4 pot replacements and lightweight front discs. leave the rears as standard escort stuff. Cheap, easy to maintain and reliable and dont do much breaking for the car. Quote Link to comment Share on other sites More sharing options...
geoffd Posted April 16, 2017 Share Posted April 16, 2017 The brake master cylinder on my pre-lit is Girling 64897680217. I would guess that it's from an Escort Mk 2 - most of the oily bits are. Geoff Quote Link to comment Share on other sites More sharing options...
6carjon Posted April 16, 2017 Share Posted April 16, 2017 I wold talk to rally design they do some kits that are ford/Kit suited and also can vary piston sizes on the caliper to your master cylinder or sell you the relevant one if you wanted New? Burton power are also ford specialist too, not sure if you knew this already. You might wait till stoneleigh as rally design usually attend plus lots of other people to ask who did something similar. Not all westfield owners of which there are many, are on the forum Quote Link to comment Share on other sites More sharing options...
Phil J Posted April 16, 2017 Author Share Posted April 16, 2017 Thanks people, I will bite the bullet and fit a bottom pivot twin bias adjustable pedal box as it seems that master cylinders for those in various sizes are readily available and economical compared to tandem system cylinders which are expensive and available in only limited sizes and not ideal for experimenting with brake bias adjustment. Quote Link to comment Share on other sites More sharing options...
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