air comp motor went out

The motor shot craps (shaft snapped in half) on my Porter Cable 7 hp compressor a couple yrs. back and when I researched it I found the way they rated the motor (by how many amps it pulled on startup which is not the right way to rate it) it was really only about 3 running hp. I replaced it with a true 5 hp motor and it runs better than ever, naturally. I figured I can buy a new compressor again for $375 that will have a junk over rated 3 hp motor on it or I can put a real motor on it for $225 and have a much better compressor. The compressor unit is still original and may need replaced some day but I'll do the same with it, upgrade it. In the end it may cost more but I have a much better compressor.

Kit Carson has a good suggestion if it has a starting capacitor. I have seen them go bad and they don't cost much.