Hello,
At the shop we've had this 68 Mustang that the owner wanted to convert the brakes from manual drums all around to power disc brakes at the four corners.
We bought an SSBC conversion kit (big mistake but now we're stuck with it), installation was allright even if it lacked instructions but problems started when we tried the car.
It's actually two seperate kits, one for the front and one for the rear. It does have an adjustable proportioning valve.
After some research, it uses the 68-73 front calipers and what looks exactly like mid 80s Lincoln MK VII rear calipers. So pretty big ones.
But the master cylinder was only appropriate for the front discs. The braking power was very poor. With brakes only operating at the end of the pedal travel despite flushing the system countless times and making sure the rod is adjusted properly.
Hoping to solve that, we've bought a Mustang SVO 1"1/8 master cylinder, it's better as you can feel the brakes working right away but you have to press hard to get any kind of real stopping power.
At the moment, the only thing in the system that hasn't been replaced is the original differential pressure valve (which after inspection is very clean), the brake line that goes to the right front caliper and the front to rear brake line.
So we're thinking we should get a real Lincoln MKVII proportioning valve to match the rear calipers.
What do you think ?
Do you have any suggestion on something we may have forgotten ?
Thanks !
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