Proportioning valve
 

Hey guys,

Newbie on this board. I am looking for some help on adjusting the proportioning valve on a 1965 GT. The 65 GT has the disks in the front and drums in the rear. This fall I noticed that all of my braking was coming from the drums in the rear. (not so good at stopping) So this winter I was going to dive into the problem deeper. I bled the lines, and checked the front pistons but nothing seemed to be out of order. I figured I would then turn to the proportioning valve. Short of adjusting it, getting to speed, slamming on the breaks to see which set breaks first I am not sure of a better way to figure this one out.


Thanks,

Tim Pastore

Re: Proportioning valve
 

That's how I adjusted mine. At first installation, the rear tires would break loose first in a quick stop. Very scary fish tailing panic stops. I just continued to lessen the pressure to the rear drums until the front tires would barely skid without locking up the rear tires. Took some trial and error testing to get it right where I wanted it.

I don't mean full blown lock the tires stops, just very quick stops where you barely hear the front tires squeal without rear wheel lock ups.

Rev

Re: Proportioning valve
 

Thanks,

I found this one out the hard way. No accident, but close. Coming off an exit when it was raining. Only brakes that were working were the drums in the back. Going around a turn in the rain with the rear tires locked = not a good time.

Tim