A/C to OBA conversion write up -PICS - Page 2 - JeepForum.com

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post #16 of 297 Old 10-10-2007, 09:29 AM
242much
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very cool mod.


"The stoke was palpable..."

good grief, just buy the Rubicon.
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post #17 of 297 Old 10-10-2007, 11:15 AM
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nice- very cool

Last edited by JRusso96; 10-10-2007 at 03:09 PM.
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post #18 of 297 Old 10-10-2007, 04:46 PM Thread Starter
RussoGuitar
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Thanks guys.. as for parts, i may miss a couple things but here are the basics:

1.A/C compressor (obviously)
2.About 30 feet of 3/8th air hose
3.Air filter
4.Lots of 1/4 NPT to 3/8 hose barb fittings.
5.Inline air tool oiler
6.Check valve.
7.Air manifold
8.Saftey reliefe valve
9.Pressure switch
10.Tank
11.Oil recovery filter
12.Hose quick connects and other fittings
13. switch.
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post #19 of 297 Old 10-11-2007, 12:04 PM Thread Starter
RussoGuitar
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In case anyones interested inflation time from 2psi to 32 psi was 45 seconds with two breaks to check pressure. Tire was a 33x12.50x15
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post #20 of 297 Old 10-11-2007, 12:30 PM
97tjtom
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THIS SHOULD BE A STICKY!!!!

im really glad you did a writeup on this as this is EXACTLY what ive been looking for!

Current: 1999 TJ 4.0 5 Speed
Past: 1999 XJ 4.0 Auto, 1993 XJ 4.0 5 Speed, 1997 TJ 4.0 5 Speed, 1994 XJ 4.0 5 Speed, 1993 Cadillac Sedan Deville 4.9L V8, 1991 Isuzu TrooperII 2.8L 5 Speed
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post #21 of 297 Old 10-11-2007, 03:51 PM Thread Starter
RussoGuitar
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Quote:
Originally Posted by bikerboy38
THIS SHOULD BE A STICKY!!!!

im really glad you did a writeup on this as this is EXACTLY what ive been looking for!
great, glad it was usefull to someone,
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post #22 of 297 Old 10-11-2007, 03:56 PM
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Nice writeup. I just completed my York OBA setup, so that I can retain my factory A/C. And I mounted my 2.5 gal Viair tank in the exact same spot as you.

There's a little more work involved, like re-routing the A/C lines, moving the battery to the other side, and spacing out the clutch fan to clear the York pulley.

Kilby's website has a lot of good info, such as diagrams and parts lists, that I used to piece my setup together.

www.kilbyenterprises.com
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post #23 of 297 Old 10-11-2007, 06:35 PM Thread Starter
RussoGuitar
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Quote:
Originally Posted by XJohnnyC
Nice writeup. I just completed my York OBA setup, so that I can retain my factory A/C. And I mounted my 2.5 gal Viair tank in the exact same spot as you.

There's a little more work involved, like re-routing the A/C lines, moving the battery to the other side, and spacing out the clutch fan to clear the York pulley.

Kilby's website has a lot of good info, such as diagrams and parts lists, that I used to piece my setup together.

www.kilbyenterprises.com
Yeah i considered the york, but this was cheaper and easier, since i already had the compressor mounted and, and i dont have much room for another compressor. The york is a great way to go though, espicially if you want to keep the A/C. Kilby does have a nice website and products, though there stuff i a bit pricey. Im real happy with their pressure switch though.
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post #24 of 297 Old 10-13-2007, 04:58 PM
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Not to rain on anyone's parade or anything....

But I was talking about this thread to a mechanic buddy of mine. He says the Sanden is not a good compressor to use for OBA. He has seen people do this mod and have the compressor seize up on them. Something to do with the oiling system.

He has seen someone go through three Sandens, and they all seized up after a short period of time.

Hopefully, these are exceptions and not the rule. Let us know how your setup works out, RussoGuitar.
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post #25 of 297 Old 10-15-2007, 03:00 PM
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Well they probably dont have an oiler inline like Russ has.

ALso anyone know a quick way to check if my compressor works?

88 XJ Red

| 5" of lift | Custom Bumpers | Black Rockcrawlers with 35x12.50 BFG MT's | Custom Rock Rails | Homebrewed OBA | Custom Roof Rack Loaded | Tube Doors |

Play 4x4Country.CLICK HERE
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post #26 of 297 Old 10-15-2007, 04:09 PM Thread Starter
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Ive been running the air system very hard lately and its been doing awsome. I couldnt be happier with it. The inline oiler seems to be doing its job because the recovery bottle filter has been collecting oil in it so i know the compressor is getting lubricated. Ill keep you guys updated though if any failures occur. And Ruffedup, just disconnect the wire going to the compressor clutch and run a small jumper wire from it to the battery. If the clutch engages then the clutch is good, youll here it click. YOu can do this with the engine running to make sure the comp isnt seized.
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post #27 of 297 Old 10-15-2007, 05:51 PM
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Well I was wondering if does that I know that my clutch works but I mean any quick ways to check and make sure the compressor actually compresses and isnt worn out

88 XJ Red

| 5" of lift | Custom Bumpers | Black Rockcrawlers with 35x12.50 BFG MT's | Custom Rock Rails | Homebrewed OBA | Custom Roof Rack Loaded | Tube Doors |

Play 4x4Country.CLICK HERE
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post #28 of 297 Old 10-15-2007, 06:23 PM Thread Starter
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Quote:
Originally Posted by RuffedUpXJ
Well I was wondering if does that I know that my clutch works but I mean any quick ways to check and make sure the compressor actually compresses and isnt worn out

You could disconnect the A/C lines, and then you can either turn it over by hand, (which obviously youd have to take the belt off) or start it up and engage the clutch, and just check for good suction/output. Id do it by hand... And im not responsible if you hurt your self doing this Chances are its probably fine.
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post #29 of 297 Old 10-15-2007, 07:09 PM
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Ok sweet thanks.

88 XJ Red

| 5" of lift | Custom Bumpers | Black Rockcrawlers with 35x12.50 BFG MT's | Custom Rock Rails | Homebrewed OBA | Custom Roof Rack Loaded | Tube Doors |

Play 4x4Country.CLICK HERE
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post #30 of 297 Old 10-19-2007, 02:16 PM
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BUMP for sticky

Great write up! I'm debating doing this or using my CO2 tank from my kegerator system that I'm not currently using. BUMP FOR addition to the STICKY

97 sport 4.0 5spd, command trac
stock height with General Grabber AT2
sony HU w/ aux input, infinity 5 1/4" and 6x9"
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