Don't Drive It! The master cylinder doesn't have enough fluid volume to operate the calipers, all the fluid is going into them and not doing anything, well not doing anything significant anyway.. Well, I guess you might could use the emergency brake in conjunction and do a little something resembling stopping but is it really worth the risk of wrecking your beloved project for? The proper master cylinder make all the difference in the world. Care to tell us about the rest of the car?
