Anyone know what HP this motor is?

[skiier]

I have a customer who strapped a 230V single phase motor to an old reciprocating air compressor. The nameplate is missing of course and I want to know if I can use this motor with the compressor. The customer says this motor is 230V but he doesn't remember the HP rating. There is no nameplate on the compressor either. The motor is an old "Baldor" as you can see in the photos at the link I have attached

http://f2.pg.photos.yahoo.com/ph/skiierx1/my_photos

I am only concerned with the motor. Please do not dwell on the compressor. I ran this motor the way the customer wired it and measured approximately 40A draw at 230V. I figure this corresponds to a 7-1/2 to 10 HP single phase motor and i think this is what is needed to run this compressor. The problem is that without a nameplate I do not know if this load is in fact overloading the motor. Maybe. Maybe not. I don't know. Does anyone know what this motor is?
If it helps it has 4 leads out the motor. 2 leads are connected to 230V and 2 leads are shorted. Is this a 230/460V single phase motor that is wired wrong. Also where is the start/run capacitor?
Any replys would be appreciated.

skiier

 

[jbartos]

Question to the previous posting: How was the motor temperature limit negotiated in terms of overload relay element Classes 10, 20, 30?