As long as I have a couple of knowledgeable guys here, I have another question. I have a drawing from eci.hotrodbrakes and a drawing from mpbrakes.com. Both show a typical disc/disc configuration. One uses a combination valve and one does not. One says an adjustable proportioning is an option, the other never mentions one. Now you see why I'm confused. As near as I can figure to properly run a disc/disc system with power boost, I need a 1 1/8" master with at least a 7" dual diaphram booster for proper pedal action and travel. Two 2 lb. residual should also be used. Does this sound correct?
