[bobcowan]

Right, you only bleed the top ports. The calipers are meant to be universal mounting, so each caliper has 4 forts. That's 16 per car. But you only bleed out of the top ones, because that's where the air is. That means 8 ports.

I connect a simple tube and bottle, open the port, pump the brake pedal about 8 times, then move on to the next one. I do front and rear at the same time so I get a full pedal stroke. Doesn't take long at all.

I had a vacuum brake bleeder for a while. But I could never get results I was happy with.

I have seen these pressure bleeders. I might either buy one or make one. What takes me the longest is refilling the MC 4 times. A pressure brake bleeder woule eliminate that.