Rob; Seems that everyone has his feathers up in the air. Let's start over.
From what I've read, sounds like the master cylinder is the culprit. We need to start off with a bench bled master cylinder. If you have access to a pressure bleeder, that would help. But, it can be done without one. Are you familiar with 'bench' bleeding? Put the master in a vise to hold it firmly. Fill the reservoir with brake fluid. Using a phillips screw driver, push the piston in. Fluid will 'squirt' out the brake line holes. Hold your fingers over the holes when releasing the pressure on the piston. Do this over and over again until you no longer feel or hear air bubbles. (boy, I had no idea how hard this would be to try to explain. LOL) Once the master has been bled, reinstall it on the vehicle. Open the right rear brake bleeder and allow it to bleed, keeping the master cylinder full of fluid. Once you are convinced that no more air is coming out (this may take some time), move to the left rear. Do the same. Then, the right front, then the left front. With all of this said, I'm assuming that you are using a NEW master cylinder, not a rebuilt?
Also, when you said 'No brakes', I'm assuming that you mean that the pedal is going to the floor? I'll be happy to help as much as I can.