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Old 05-11-2012, 03:52 PM   #1
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Onboard Air

VIAIR ADA 2012 Jeep JK System 45044 - Onboard-Air.com

I was looking at this kit recently and was wondering about the pro's and con's of going this route vs. just getting a compressor I can keep in a bag and clamp on the battery posts when I need it.

The compressors get quite hot on their own so I can't imagine preheating it in the engine compartment is going to help it last very long. Also the dust that would get all over it from driving off-road can't be good for the compressor. I don't see a very robust air filtration system on that.

Does anyone else with a 2012 have onboard air like this? What are your thoughts? Would you rather have kept a compressor in a bag in the cab instead?

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Old 05-11-2012, 05:24 PM   #2
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They have a intake filter.

They are design to hand heat.

If you do use one you'll have your hood open, this lowers temps pretty fast as heat rises

I have arb with the bracket on the brake booster on my 12.

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Old 05-11-2012, 07:11 PM   #3
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The nice thing about having the system hard mounted in the Jeep, is you will never forget it.

But really, I prefer the hard mounted system. Partially for the reason above, but also because you just hook up the hose and go. If you ever go to air lockers in the future, this will work great for them as well. The down fall is, if you have other vehicles you off road or take on trips, you won;t have the compressor with you. This is where a portable unit is better. But, you can always get a small one for your other cars, etc.

As for heat, they are stout compressors, and like mentioned above, heat will rise. You would operate the compressor with the hood open, so it will create a lot of airflow once open.

They do have an air filter that is very good about keeping clean air. It also comes with hardware to remote mount the filter elsewhere. I have had my compressors along my frame rail for 5 years now with the filters going directly in, without problems. I just make sure to change the filters every so often. They come with one spare set also.

Hope this this info helped and answered some of your questions. Also, if you decide to purchase, please let us know, and we will take care of you.

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Old 05-11-2012, 07:29 PM   #4
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was looking for an onboard air solution for my 2012 jku but needed a higher than 105 psi output for my freighter horn, whats your recomendation there?
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Old 05-11-2012, 07:34 PM   #5
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I like the truck horn idea - adding it to my mod "wish" list
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Old 05-11-2012, 07:40 PM   #6
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happened to buy a few ocean going freighter horns from the ship breakers in India, at work on 150psi they are really loud. One is going on the jeep as soon as I get the onboard air thing going, been debating underhood myself. Not much room on the 12's for much else and dont want to drown them out if underneath.
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Old 05-11-2012, 07:43 PM   #7
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oh , a real ship's horn, A FREIGHTER HORN - wow , that is, as the say "DA BOMB" - I probably need this :-), would help especially in the fog :-)
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Old 05-11-2012, 08:01 PM   #8
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was looking for an onboard air solution for my 2012 jku but needed a higher than 105 psi output for my freighter horn, whats your recomendation there?
You can change the pressure switch and safety valve on the ADA unit to make it 150 PSI. Just have to re-wire the new pressure switch before it goes to the delphi connector off of the compressor.
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Old 05-11-2012, 08:28 PM   #9
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Old 05-11-2012, 09:05 PM   #10
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I've got an -11, and don't know why you specified *if you have a 12*... but fwiw... I used to have the Viair portable. After installing ARB lockers, I also had them install the kit to use the compressor to air up. I used to be lazy about airing down... 'cause I had to go through all the steps to air up... including digging out the portable and hooking it up. Now I just connect the hose, turn on the switch and voile' = air.
It has a filter. It is built to withstand the rigors of under the hood travel etc... No comparison. Highly recommend this way if you have a choice. Easy Peasy
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Old 05-11-2012, 09:11 PM   #11
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I'm going with the viair myself. I like the idea of it always being ready to use, nothing to hookup, fully integrated, etc.
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Old 05-11-2012, 09:37 PM   #12
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Quote:
Originally Posted by CG3
I've got an -11, and don't know why you specified *if you have a 12*... but fwiw... I used to have the Viair portable. After installing ARB lockers, I also had them install the kit to use the compressor to air up. I used to be lazy about airing down... 'cause I had to go through all the steps to air up... including digging out the portable and hooking it up. Now I just connect the hose, turn on the switch and voile' = air.
It has a filter. It is built to withstand the rigors of under the hood travel etc... No comparison. Highly recommend this way if you have a choice. Easy Peasy
I only specified a 12 in case there are fitment issues because as I understand it there is less room in the engine bay on a 12. I don't want to have to make any modifications to be able to make it fit. Additionally, will it also fit in there with my sPOD?

Also what is meant by "constant duty" versus "heavy duty"? If I recall compressor duty cycle ratings are all a bit misleading in that they all need cool down periods that don't necessarily line up with what their descriptions would have you believe. How long can those different models run before they trip thermally or should be turned off? Are these just the portable ViAir units with a chassis mount or do they have different fill rates and run times?

The comments posted are making me think this is probably the route I am going to take but I am pretty OCD when it comes to researching prior to making a purchase. Thanks for all the replies.
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Old 05-11-2012, 10:12 PM   #13
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One more question (surely not the last)...

How many of you have the aux air tanks and if so, where are you mounting them? Got pics?
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Old 05-12-2012, 09:14 AM   #14
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for my 11 I had I had the dynomax exhaust that moved the muffler. Thus I took a 3-4 gallon air tank and put it where the muffler was. I play to do the same to my 12 when the exhaust comes out
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Old 05-12-2012, 12:23 PM   #15
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I only specified a 12 in case there are fitment issues because as I understand it there is less room in the engine bay on a 12. I don't want to have to make any modifications to be able to make it fit. Additionally, will it also fit in there with my sPOD?

Also what is meant by "constant duty" versus "heavy duty"? If I recall compressor duty cycle ratings are all a bit misleading in that they all need cool down periods that don't necessarily line up with what their descriptions would have you believe. How long can those different models run before they trip thermally or should be turned off? Are these just the portable ViAir units with a chassis mount or do they have different fill rates and run times?

The comments posted are making me think this is probably the route I am going to take but I am pretty OCD when it comes to researching prior to making a purchase. Thanks for all the replies.
The duty cycles do refer to the compressors ability to run without resting. All VIAIR compressors have a duty cycle that is rated at 100 PSI, which is for the most part, and industry standard. This duty cycle applies to all compressors, whether it be portable or hard mounted, and almost all (except the really small ones) VIAIR compressors have thermal overload protection. If it does over heat, it will shut down, and be able to turn back on once it has cooled down.

A 33% duty cycle means it can run for 20 minutes at 100 PSI. Since most tire inflation on Jeeps is done up to 30-35 PSI, it can run much longer at this pressure. This is because it is not fighting against 100 PSI, which the duty cycle is rated at. So, with knowing you only fill to about 35 PSI, you can run the 33% duty cycle compressor for about 35 minutes straight before resting. This will be plenty of time to fill a set of 35's or even 37's from 15-30 PSI (or whichever your specific range is). That is why I recommend the heavy duty for most all applications.

Because the constant duty is a slower turning motor, it generates less heat and can run much longer vs. the 400C that generates heat much faster due to it's speed. This is why the 450C is a good compressor for tires larger than 37", where a lot of volume is present. Or if you want to fill your tires and a few of your buddies. The 450c can run a long time, and upwards of a full hour before needing a rest. The trade off is speed though.

All 400 series compressors have the same fill times. For example, the 400C ADA, 400P, 400P-A, 400H will all have the same performance because it is all based on the same 400 series compressor.

I hope this helps answer your questions.
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Old 05-12-2012, 02:46 PM   #16
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In CG3's case it's a no brainer. I woukld consider it a must where she drives along with a tire plug kit. The only downside to OBA is the cost IMO. I use a portable, but it definitely has it's downsides. Mainly that you have to bring it with you in a vehicle where it would be prone to theft. If you can justify the cost of the OBA, definitely go with it over the protable option.

Can these systems also run air tools in a pinch for a trail repair?
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Old 05-12-2012, 03:27 PM   #17
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The ADA's can't because the tank is too small to run any sort of air tool. A better choice for air tool usage is the 2on2, but is only available for the 07-11 JK.

On a 2012 JK, you would have to find a location, but our economy OBA system would be a great choice at $299. It isn't a bolt on application that comes with fill hose, wiring, etc., but wanted to give it as an option.

The ADA is a great choice because the space is limited on the 2012. You could always add a tank later to the system if you decide to run air tools.
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Old 05-12-2012, 06:55 PM   #18
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Thinking of blacklisting this forum, all this reading and thinking, ordered 450ada for my jk to power the horns and air tires, have an aux. tank I am looking for a location for for volume.
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Old 05-12-2012, 11:59 PM   #19
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Originally Posted by Onboard-air.com
The ADA's can't because the tank is too small to run any sort of air tool. A better choice for air tool usage is the 2on2, but is only available for the 07-11 JK.

On a 2012 JK, you would have to find a location, but our economy OBA system would be a great choice at $299. It isn't a bolt on application that comes with fill hose, wiring, etc., but wanted to give it as an option.

The ADA is a great choice because the space is limited on the 2012. You could always add a tank later to the system if you decide to run air tools.
Is there a location you would you suggest to mount an auxiliary tank on a 2012?
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Old 05-13-2012, 11:18 AM   #20
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Is there a location you would you suggest to mount an auxiliary tank on a 2012?
Take a look at the dominions kit. Dominion OffRoad Jeep JK CMF OnBoard Air System. Funnily enough I'm half way through adding this kit to my JK, started yesterday and will finish it up today.

I know Brett is actively working on a 2012 version.
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Old 05-13-2012, 02:51 PM   #21
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I just had a customer order the ADA system and is planning to put his tank above the rear end. He did some measuring and it clears for him. He does have a 4.5" lift.

There isn't much room, and I seen some guys run it inside in the cargo area or make brackets and hang it from the rear roll bar tubes.
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Old 05-20-2012, 11:32 AM   #22
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anyone installed on the 2012 yet have the kit may send it back bracket interferes with to many things
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Old 05-20-2012, 12:37 PM   #23
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The July 2012 issue of "JP Magazine" has a good article on On Board Air Systems.
Incase anyone wants to built their own... "BH"
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Old 05-20-2012, 02:03 PM   #24
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I can always count on this site helping me to justify a reason to spend some dollars.


I saw this thread a week or two ago and started thinking about why it would be a good idea to pick up one. I'm looking at the same one as AMangum (VIAIR ADA 2012 Jeep JK System 40044 - Onboard-Air.com). I mainly want to be able to air up after driving on the beach, etc.

My question is this: I don't consider myself very handy with tools and am a bit nervous about installing something like this. Is it really just bolt on and to what extent is the electrical work involved? To ask another way for a guy who doesn't normally work on his cars (but would like to start) is this a doable project with little risk of it going bad?

Thx!
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Old 05-20-2012, 02:58 PM   #25
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I have the ADA system on my 2012, Ill take some pics and post
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Old 05-20-2012, 03:06 PM   #26
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I have the ADA system on my 2012, Ill take some pics and post
Thanks! Looking forward to see it.
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Old 05-20-2012, 03:51 PM   #27
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Thanks! Looking forward to see it.
Same. It looks way to crowded there on a 2012 for the compressor. Holding off until I see some pics showing clearances.
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Old 05-20-2012, 11:05 PM   #28
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Here is a video of my 2012 with ARB for you guys. Be sure to check out my other videos!



Thanks!
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Old 05-20-2012, 11:40 PM   #29
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it back bracket interferes with to many things
With all due respect, it does not. Somethings may be close to the bracket and it is a tight squeeze. If you are referring to the ARB one.
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Old 05-21-2012, 01:07 PM   #30
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Just called a spoke with OBA. The install doesn't sound that bad so I'm going to give it a try. I ordered an HD and a CD to install on both JKU's. Going to install the CD on mine and the HD on hers. Will take pictures of the install and will post with a little write up when I'm done. I was told the kits should ship out next week so I'd expect it will be 10-15 days before I'm back with the pictures.

Also completely unrelated to Jeep they have a bolt on kit with a tank in the works for the Raptor. Very excited about that. Maybe that will be my first Raptor mod!

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2012 JKU Sport Flame Red 6sp/4.88/3" Teraflex/35's/Wet Okole/Teraflex Hinged TC/ACE RS FB RB/VIAIR OBA/Warn 9.5 CTI-s/Various other cosmetic mods (Hers)
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