[dmaddox]

Ok, short story:

1. Bought rig (1963 Model Cruiser) Had single circuit system, it would drive for about 25 miles, and then start locking up (pedal would get higher and tighter.....higher and tighter until knee is in my chest).

2. Replaced the master cylinder. Still did it.

3. Gutted the entire rig's brake system put in all new 8 cylinders, new lines, and a power booster/master setup. Damn thing locked up again after about 50 miles. PLEASE NOTE: EVEN FLAT TOWING this with the drive shafts disconnected - brakes locked up - all four!!!

4. Replaced THAT master, adjusted push rod, on and on and on......still the thing locked up.

5. Gutted it all AGAIN, cleaned, inspected, adjusted, etc....this time putting ONLY a Toyota mini-truck master cylinder and new brake lines in. Onto the third system. Well, low and behold the damn thing locked up again.

The pedal starts off down at the floor, drive a little bit, it's 50% up and hard as a rock (brakes work great however) then the pedal can't be pushed, it's solid....2 miles later - bam all four bind up and I come to a stop.

I am at my wit's end here.....It is one system after the next on this thing.

I tried to shorten the push rod....and no dice.

After this is solved, I am going to install a carb fan for vapor locking issue.

Thanks for any advice,

Dallas