Update
============
I said I thought mine was out of an 86 Volvo, actually I was wrong it is out of an 82; However, the 86 also comes with a york but it is a smaller one.

yorks are sick! i try to run them on every thing! the 210 can be found on the early volvo's that what i got psylents off when his first one took a dump. there 3 diff heads that i know of that come on these, 1st style is like the one on psylent's ride, the ports are externaly theaded,the other two have the intake and discharge on diff sides. Alot of the automotive ones have a o-ring type with various adapters. Some semi's run these, theres run non stop, there is just a pop off on the tank. there is a smaller rotary style that are more compact, they move decent air as well. all ac compressors move oil through the lines. the york and sanden are a oil filled, so they dont an inline oiler. the draw back is they pull oil from there crank case. the york fix is pull the pulley and front seal there is a small hole that you tap out and thread a set screw in. no more oil in the air system!

sorry for the long post and run on sentences.

Which is how bagged duallys should be setup, if the guys that owned them had any ballz to be buck-wild.

Richard

My truck was setup like this for a while... it was funny for a while when people would walk by and it would pop, but on a truck that doesnt get fuel mileage in the first place, running the pump full time does not help at all. Now i am back with the 200 PSI pressure switch and I love it.

It is a 210. Part# 57056 from 4-Seasons.

Semi trucks use these, yes. BUT for airconditioning. LOL. Not for on board air. I'm not gonna try to stop 80,000 pounds in 10 brake chambers with a 210 York. There is a governor on the truck aircompressor to limit it to around 125. They do release air from time to time, but that is from the air dryer.

cool man thanks but on the orielly's website it says 209-210 which is it?
Cause if there is a possibility its a 209 I aint getting it.

and damn a clutch for it cost 130 so lookin at 300.. still not bad though i guess

It's a 210.

okie dokie sounds good then man thanks