Hi, new guy here...
Anyway, I have recently completed restoration on my 69 Camaro.
As pert of that, I added front disc brakes. Replaced the Master cylinder etc... New calipers...
Anyway, the brakes were working fine for a while (500 miles on it at least).
Recently however, the front brakes are dragging horribly.
I figure that if I had the wrong valves or Master cylinder, they would have had the problem from the start.
I know it is hydraluic because opining the bleeder on the brakes makes the wheels turn fine. But the next time I pump them up, they drag again.
Also, I don't think it is the brake pedle, as I pulled the pin on the pushrod and it still drags. Also note that it drags even if the car is not running.
Right now I suspect the Front Disc Holdoff valve (some call it a proportioning valve). I Believe the purpose of this valve is to prevent pressure from going to the discs until some set pressure is reached. Would my problems happen if that were stuck open?
I would think that if I had the wrong MC (with a check valve in the front) that I would have had this problem immediatly.