Hello,

I recently went for my first test drive on my 32 roadster, and as expected I have to work out a few kinks. The car was running fine and everything seemed to be working well, when the front brakes started to lock up. The brakes worked fine when the car was cool, but once it started to heat up the front brakes started to lock up. The hotter it got the worse it got. By the time I made it home from a 5 minute drive, the rotors were smoking and the front was completely locked. I loosened the bleader, on one side and that immediatly released the brakes. My setup is as follows. Non power master cylinder under the floor, disc up front drum in the rear. 2lb residual valve to the front, 10lb to the rear. standard old school 70's master cylinder, and gm proportinate valve in the line. I've been scratching my head over this, I realize that the fluid probably expands once it gets hot, but not sure why it would lock up the brakes, any suggestions would be helpful. thanks