[mechman600]

It would be doable. It's just that I am quite disappointed in this vacuum pump for what I paid for it. $65 for a pump that barely does anything. I am asking it to do something that it wasn't designed for, though. If I spent another $65, I'm in it for $130 for something that might work. I think I would rather cut my losses and look for something better, like a proper used EV vacuum pump.

EDIT: I went to the hardware store today and picked up a 12V air compressor on sale. I got home and took it apart. Aaaaaaannnnddd....it won't work. The pump does not have a an intake port - the crankcase is open and the inlet valve is built into the piston. I was able to reverse the position of the inlet valve, but not the outlet valve. I reassembled it and made sure it still works and I will return it one of these days.

Scratch that idea. I am now searching eBay for real vacuum pumps.$$$