[flatsixcrazy]

I've been using a Sears oil-less, 33 gal. air compressors, for the past 8 years. I used it mostly for breaking loose nuts and bolts, and occasional small painting jobs. However, I just picked up a "project," two stage, 60 gal. IR 2340L5, that is missing a pressure switch, missing a 5 hp motor, and I was told that the pump runs hot (I was told by the seller, who was told by the person that gave him the unit). The tag on the tanks says that the pump is rated at ~15 SCFM @ 175 psi max, 1575 rpm, 2-stage. I'm planning to use this air compressor for body work, painting, and sandblasting jobs.

I'm looking for a used 5 hp, 220V, 60Hz, 7/8" shaft, and 1 phase motor to get this thing running again, so that I can see what's really going on with the pump. I've seen a few motors that almost fit what I'm looking for, Baldors and Leesons comes to mind. Most of these motors have a 1750 rpm range. My questions are:

1) Can these higher 1750 RPM motors be used on an IR 2340 pump that is rated at 1575 RPM?

2) Do I need to stick with 5 hp motors or are there benefits with going to a higher (or lower) hp rating motor?

3) What other brand I should also consider in buying a used but reliable motor ?

4) What other factors I should be looking at in a used motor?

5) (non-motor question) How can I hook the 33 gal. and the 60 gal. together to increase my air capacity?

Thanks in advance for all you help.