Hi there, I need more CFM to run a blasting tank for for a car resto and I can't afford a new one so I bought a used Dayton speedair 60 gallon for $50. I figured that the heavy sucker would scrap for more than that so I took a chance. Well now that I got the two quarts of sludge off of it I can read the tag. It is a 1Z763 it says that it is two stage (verified by the two different sized pistons on it) 3HP 3 Phase. Well the reason the guy sold it was that the Dayton 5 HP motor that his dad put on there 20 years ago or so died, he went and got a POS GE 5 HP one from Lowes and it died 3 months later so he coughed up the $3K for a new compressor and sold me the old one with both motors. I was wondering if there is any issue with there being originally a 3 Phase 3 HP and them running a 5 HP single phase on there? worked for 20+ years like that. That Dayton Motor is huge, maybe 200lbs, it says that it is 5 HP but it was 3-4 times the size of the 5 HP GE he put on there? Why is that? I want to get a gasket kit an go thru the pump. Any parts sources, tips, extra things that I should do (other than paint it) while I have it apart? The flywheel on the pump turns freely with no binding or sounds other than a poot of air every half turn or so. Thanks a lot for ANY advice on this as I want to learn all I can about the whole thing, restore it right, and use it for life! So please share some of you knowledge with me, I am VERY mechanically inclined but know squat about compressors other than I might have a good one here. (I hope) Thanks, Steve from N.C.