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Old 03-28-2011, 01:34 PM   #1
vbguru777
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ARB Compressor with 2.5 gallon tank

A few weeks ago I bought an ARB compressor, mounting bracket and hose kit from Dave at Northridge4x4. I finally had a free weekend to install this, so the fun began. I also picked up a 2.5 gallon air tank from 4WheelParts (Smittybilt).

My buddy Jason came over with his welder and much smarter brain than I have, and we got started. Trying to find a place to mount the 2.5 gallon air tank was challenging as there isnt near the room ANYWHERE that I had on my 04 Rubicon. After trial and error I finally decided to mount it at the bottom of the radiator, just above the front cross member.
We first bungeed the tank into position by running the bungee through the fan shroud and around the tank. We had to put a piece of wood under the tank to get it up off the cross member.

(this is looking down from the top of the radiator)


(this is looking from under the jeep)


Then we made a template for the brackets out of cardboard. The brackets mount below the front cross member, then wrap around the side of the tank.



We took some 1/8 x 1 stock we picked up a Home Depot and hammered it into the shape of the template





Next we marked the tank where we would eventually drill a couple holes through the brackets and welded on some bolts.



Then, we drilled the holes into the brackets and welded the brackets to the bottom of the cross member. Also, before this step, we welded on a tab at the top of each bracket.
(this is looking down from the top of the radiator)



I then sanded down the tank (lightly), primed then painted it flat black. I was torn between leaving it red, but finally decided to make it more subdued.



After also painting the brackets and letting everything dry for a bit, I lined the brackets with some x foam rubber weather stripping to cushion the tank. Then, I dropped the tank into place and secured it with two nuts onto the studs welded to the tank. Also, I took two hose clamps and went around the tank, grabbing the tabs I mentioned earlier.



The ARB compressor came with a very nice wiring harness and a cool ARB switch. However, I had already wired up switches (a different project) so I just used one of these as I already had the hot lead under the hood.

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Old 03-28-2011, 01:34 PM   #2
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This is the compressor mounted and wired up



I then ran air hose from the tank to a quick coupler and from the compressor to the tank.





The Smittybilt tank came with a pressure gauge, so I used it.



The hose kit that I got from Dave came with a nice quick coupler. I obviously have a stock bumper, so for now it is mounted on the top of it. When I get an aftermarket bumper, Ill probably mount this in the same vicinity.



The biggest PITA was finding a fitting for the manifold on the compressor to get a hose hooked up to it. It is a 1/8 BSPT thread (British Standard Pipe Tapered). I obviously needed to get this to a NPT thread. I finally located a hydraulic supply shop here in Denver that had a BSPT male to NPT female adapter. $11 later (the most expensive pipe fitting Ive ever bought) and I was good to go.
After everything was hooked up and tested for leaks I ran a few tests. First, I timed how long it took to fill the 2.5 gallon tank from 0 to 100 psi (the cutoff mark on the supplied pressure switch). This took 1 minute and 20 seconds. Next, I filled my stock 32 tire from 10 psi to 35 psi starting with the tank full. This took 1 minute and 55 seconds. Lastly, I filled the tire from 10 psi to 35 psi starting with an empty tank; this took 2 minutes and 20 seconds. I should note that all of these tests were with the compressing being very hot as I ran it a lot testing for leaks.
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Old 03-29-2011, 05:30 AM   #3
carbonunit
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Nice! It looks like you did a great job. I have a co2 tank but plan on mounting a compressor as time and money permits.

Thanks for the writeup.
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Old 03-29-2011, 06:37 AM   #4
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Ok now do you have to have a tank with the ARB compressor?

What all comes in the box, Im about to pick up an sPOD with the air gauge, but not running lockers...YET. So if I just want it to put air the tires and shit what all would I need
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Old 03-29-2011, 08:11 AM   #5
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Quote:
Originally Posted by GRIZZLY47 View Post
Ok now do you have to have a tank with the ARB compressor?

What all comes in the box, Im about to pick up an sPOD with the air gauge, but not running lockers...YET. So if I just want it to put air the tires and shit what all would I need
The package I bought from Northridge came with the ARB compressor (with wiring harness and hardware), the bracket to mount the compressor and a hose kit (which has a hose, coupler and some fittings). I then went to 4WheelParts and bought the smittybilt tank, which came with a pressure gauge. I also had to make a trip to home depot to pick up some misc stuff such as an air hose that I cut to use under the hood, the metal for the brackets, etc. Other than this, oh, and the fitting I mention in the write up to convert from bspt to npt there isn't anything else to get...

So yes, the ARB compressor fills the 2.5 gallon tank.
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Old 03-30-2011, 05:59 AM   #6
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Do you have to have a tank with the compressor? Im trying to understand if that compressor will work without a tank for like filling up tires. Becuase ARB sells a air inflation kit but not an airtank
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Old 03-30-2011, 06:36 AM   #7
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Quote:
Originally Posted by GRIZZLY47 View Post
Do you have to have a tank with the compressor? Im trying to understand if that compressor will work without a tank for like filling up tires. Becuase ARB sells a air inflation kit but not an airtank
No, you don't have to have a tank. I only did this as I like to have a reserve of air for high volume usages.
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Old 03-30-2011, 06:43 AM   #8
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Quote:
Originally Posted by vbguru777 View Post
No, you don't have to have a tank. I only did this as I like to have a reserve of air for high volume usages.
So you can use it without a tank for filling up tires?
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Old 03-30-2011, 06:57 AM   #9
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So you can use it without a tank for filling up tires?
Correct. There is a guy on my other forum (ROF) that has this compressor without a tank and loves it.
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Old 09-23-2011, 11:46 AM   #10
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Great write-up!

How would you incorporate lockers into this setup? I want to install an air tank for filling tires and still have selectable ARB lockers. I'm having a hard time finding info on how to do that. From what I've read, the ARB compressor isn't meant to fill an air tank that size. Does it overheat & time out any? How long does it take to fill that tank, and how many tires can one tank fill? Thanks!
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Old 09-29-2011, 05:00 PM   #11
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How much time the compressor has to be running to fill the tank and shut off?
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Old 10-01-2011, 02:44 AM   #12
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Originally Posted by Berserker View Post
Great write-up!

How would you incorporate lockers into this setup?
This compressor has a three air line fittings. A 1/4" fitting for the tire fill air line (or lead to the tank), and two 1/8" fittings for air locker solenoids on the integrated tank (small grey cylinder on top of the compressor).
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