Brakes help
 

79 mustang T\SA. I have stock SN95 front disks, stock rear drums and a stock style 7\8 bore manual disk\drum master cylinder. The brakes are like pushing on a brick. Really hard, They work but have a hard time holding the car at the tree.
Any ideas other than after market break system? I need to work with what i got. I would consider a new master but even the Willwood is 7\8 bore.
I thought about making my brake peddle a inch or two longer for more leverage.
I looked at moving the pushrod pin up higher but the way the master is I think it might bind.
Any ideas? Help please!

Re: Brakes help
 

I have converted a couple of Mustangs and had the same results. I would try to increase the pedal ratio. Do you have a brake pressure gauge to check to see what you're getting at the wheels?

Re: Brakes help
 

Do you happen to have an adjustable proportional valve on the line to the rear. I had problems holding the car on the line too. Checked with Strange and it turns out that while you put the valve on the rear for street rods you put it on the front for foot brake drag racing. Swirtched it around and have no problems anymore

Re: Brakes help
 

The harder the lining on the pad, the harder it is to hold the car....

Try some cheap soft pads....

Soft brake shoes for the rear wouldn't hurt either...

Use secondary shoes on the primary side also....

This is drag racing, not road racing...

Just sayin'

Re: Brakes help
 

an adjustable proportional valve is a good idea. The S\N 95 disks are bigger than the ones that were on the car. I still have the stock valve. I will also try soft pads.

Re: Brakes help
 

Robbie, did you eliminate the booster and keep the same pedal ratio? If so, that's your problem.

Re: Brakes help
 

You might try to find a smaller bore MC.

Re: Brakes help
 

Been there dun that.
If the rears don't hold the fronts will not make much difference
1. Move pedal rod up to top hole.
2. Small master 7/8
3. F250 rear wheel cylinders
4 12X2 rear drums with NOS Ford linings.
I have the rear backing plates wheel cylinders and linings. They are yours if you come and get them.

Re: Brakes help
 

Yep sure did. Might be hard to find the manual break one

Re: Brakes help
 

Okay. First step is take the pedal out and drill a hole about an inch up. They are case hardened , so use a drill press.
That's the free one , before getting out the Plasti-Card.