>  EH> The compressor is made out of an OLD piston type Caddy air
 >  EH> conditioner compressor and it's lasted 25 years.  No reason the
 > Now that's a heck of an idea. Only question is how do you keep the thing
 > lubricated? I would not think the seal life would be long without some
 > kind of lubrication. Might be worth some thinking about. Ceap little
 > sears compressor I have here does not do much, even if hooked up to a
 > freon bottle for a holding tank.
Any York commpressor off Fords or the V type from a Chrysler product works 
great. I've heard of guys using the rotary GM's too but a little more 
difficult for lubrication.
The best by far is a unit off a central air conditioner. They're quiet, fast 
and compact. Punch a hole into the top corner with your air chisel rather 
than drill to avoid so many chips entering into the case. Saw off a short 1/2 
pipe nipple at a sharp angle to fit over the hole and weld in place. Cap with 
a 1/2 pipe cap. Use this port for checking and topping oil levels as both 
types will pump some oil since neither uses oil rings. For most purposes 
that's no problem. Big draw back using these is 220 volt. However, you can 
turn that to advantage. Your friends won't be inclined to borrow, since 
they'll have trouble finding an outlet.  Most of these units will have 
enough torque to start under normal 125 lbs pressure but an unloader is 
recommended. Oh, be sure to salvage the starting relay and capacitor. They 
basically are a voltage relay that measures the starting winding voltage 
picking up when the motor is near full speed and cutting out the starting 
capacitor. I can sketch out the circuit if you have trouble here.
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