I was doing some checking on my air compressor in my trailer today. I posted a thread about adjusting the governor on the 4a032 engine so I can get this thing running like it's supposed to be. I know the engine is rated and governed to run at 3600 RPM, but that seemed awfully fast to me. I wanted to find some information about the compressor and then use the pulley diameters to determine a safe engine speed to run. Turns out I should be fine with what I've got.
What I did was called Worthington today, they are the manufacturer of my compressor. Although the tag does not have a model number listed, the nice gentleman at Worthington was able to pull up the information using the information I did have. My compressor serial number is "C V 3190", the ID tag listed the size as "4 3/8 x 2 1/2 x 1 5/8". I gave this information to John and he looked it up, told me it was a "CV style" compressor (kind of evident from the ID tag now that I know what style it is). The size refers to the cylinder sizes, large cylinder bore is 4 3/8", small bore is 2 1/2" with a stroke of 1 5/8". He told me the important information I was looking for though. The compressor is rated to run between 700 and 1750 RPM's. At 1750 RPM's with a pressure setting of 175 PSI the compressor will deliver 16.3 CFM.
Nothing exciting, but If some of you guy's with the ENG-3 lube trailer have a worthington compressor like mine, now you know more about it. Also, John told me that Worthington has a fantastic selection of repair parts for these old compresors, even he said, that's surprising for a compressor that is over 40 years old.