I want to do an OBA system for no other reason than doing it. As for the back story I have a 99 2.5L with no a/c. I put a new altonator on the other day and realized with no a/c I have a ton of room on the pass side (stock airbox is gone also) so got to thinking and figured having no a/c could be a good thing.
I am going to use a stock a/c compressor as my air source. I am shying away from the york style because of the additional fab work. Also I can then use a stock a/c length serp belt. I can use the pigtail/cannon plug that is just sitting there from the factory harness since i have no a/c to get a switch to the cab to kill the system until I need it (if i can find the other end, i am thinking its behind the climate controls)
Plumb in a small air filter, then inline oiler and then to the intake port.
Plumb out a line with a check valve, then a pressure switch on a tee (thinking 85/on 120/off) then into a tank, then out the tank with a 135 relief valve, gauge to the cab, and enough hose to reach around the whole jeep.
I am not going to use a oil/water seperator because I am not going to be running this for more than tire air and occasional quick air tool/maybe air up an air mattress camping. Maybe if there room and i can plumb it to look nice I will.
I am limited by my tank size. I have two areas under the body, one being right in front of the gas tank up hi, the other being along the frame rail on the driver side, or possibly in the open area when the airbox was. I can find 1/2 gallon up to 2.5 gallon in different configurations (long skinny, short and round) but being online I cant check fit unless i buy them.
Does anyone have a tank mounted under the body or in the engine bay? Anyone know the psi output of a stock a/c compressor? Is a 1/2 gallon a joke in size and not worth it? (its 6"x6.5"x7") what type of CFM's do I gain with a tank? I've heard the a/c compressor air is going to be hot...all copper/brass to the tank or high temp flex lines?
looking for thought and observations...and its much appreciated