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-   -   On board or Tank air (http://www.wranglerforum.com/f282/on-board-or-tank-air-244252.html)

Rebelicious 05-21-2013 11:05 PM

On board or Tank air
 
I'm trying to decide which to install. My TJ has a perfect spot opposite of the battery on the drivers side for on board. What are the pros/ cons? I usually air down to 11 Lbs w/35's but my cheap Portable keeps popping fuses. Time to upgrade. Advice?

jeepwayoflife 05-22-2013 04:38 AM

Are you just looking for something to fill up tires and whatnot? Maybe lockers?

callbob 05-22-2013 09:03 AM

CO2 tank. Looked at on board air capable of filling 35's. Could have bought new tires cheaper. 10lb bottle will do my 35's very quickly and literature or forums (you pick your poison there) says 15 to 30 lbs 16 times a set. I usually go lower than 15 some times, but run 30 on the street.

530 hilbilly 05-22-2013 09:17 AM

I just got done with my oba, i used my stock a/c pump and works awsome for airing up tires ect., i also installed a air tank for more capacity,around 7 to 11 cfm at iddle :punk:kicked around the idea of a co2 tank or compressed air,didnt like the idea of having limited air, Used air on trail last weekend ,filled a set of 33's from 10 psi to 30 psi and a set of 37's from 10 psi to 30 psi in about 15 min. not bad:thumb:

geiman 05-22-2013 09:57 AM

I used my A/C compressor on my last Jeep and it worked quite well. This Jeep is a bit nicer and I want to keep the A/C, so I'm going to eventually use a York 210 compressor for OBA which should be a bit nicer yet. I have the compressor, just need to get it mounted.

Until I get my York compressor mounted, I'm using a CO2 tank. I found a 20lb tank for cheap locally, and it only costs $20 to get it filled. One tank full has lasted me over a season of wheeling, so I'm pretty happy with it for now. We'll see how long it lasts now that I'm on 35s. It's really nice because of how fast it is. I wheel with several people who use a 12V compressor mounted under the hood, and they're pathetically slow. I'd rather have a slow compressor than no compressor, but personally I'll be spending a little extra effort to get an engine driven compressor installed for the extra speed.

98 tj sport 05-22-2013 11:58 AM

Quote:

Originally Posted by geiman (Post 3781253)
I used my A/C compressor on my last Jeep and it worked quite well. This Jeep is a bit nicer and I want to keep the A/C, so I'm going to eventually use a York 210 compressor for OBA which should be a bit nicer yet. I have the compressor, just need to get it mounted.

Until I get my York compressor mounted, I'm using a CO2 tank. I found a 20lb tank for cheap locally, and it only costs $20 to get it filled. One tank full has lasted me over a season of wheeling, so I'm pretty happy with it for now. We'll see how long it lasts now that I'm on 35s. It's really nice because of how fast it is. I wheel with several people who use a 12V compressor mounted under the hood, and they're pathetically slow. I'd rather have a slow compressor than no compressor, but personally I'll be spending a little extra effort to get an engine driven compressor installed for the extra speed.

Do u know anyone that has a buildup on putting on n a tj I've looked for one but haven't seen any write ups, was looking at doing it but would like to read thru a write up and c what all I need and the cheapest place to get the stuff

Jerry Bransford 05-22-2013 12:13 PM

Quote:

Originally Posted by Rebelicious (Post 3780211)
I'm trying to decide which to install. My TJ has a perfect spot opposite of the battery on the drivers side for on board. What are the pros/ cons? I usually air down to 11 Lbs w/35's but my cheap Portable keeps popping fuses. Time to upgrade. Advice?

Unless you are willing to take the trouble to install a York compressor or convert your current a/c compressor to an onboard air system, a C02 tank will produce VASTLY faster air-up times than a common 12v compressor will. I'm talking 5 minutes or less total air-up time for the C02, York, or a/c compressor vs. 30-45 minutes using most 12v compressors.

My previous (stolen) TJ had a York-based OBA system and I loved it. I just went with a 10 lb. C02 tank for my replacement TJ and it is as fast as my previous TJ's York OBA system was but I hate having to pay $25 to refill it every 4-5 offroad trips. Not to mention I have to take it to a gas supply store which isn't just up the street for me.

I hate those small 12v compressors so commonly used... they make an obnoxiously loud sound and they take SO long to refill big Jeep tires. Every Sunday morning after a wheeling trip, multiple 12v compressors are running all morning in campgrounds I often stay in when wheeling. Annoying to say the least. C02 tanks, York and a/c compressors are FAST & QUIET.

Basically speaking, the bigger the tire you run, the more important your choice of how you refill your tires becomes. :)

brs256 05-22-2013 12:32 PM

i have a viair kit ... i got the constant duty compressor coupled with the 2 gallon tank ... takes me about 15 minutes to air up from 15-35 psi

its pricey, but its a simple install .. and everything is included in the kit, i may switch to a York at a later date ... but i have no plans to do so as of yet, my oba is more than adequate for my current needs and near future needs(35"s)

geiman 05-22-2013 12:53 PM

Quote:

Originally Posted by 98 tj sport (Post 3781681)
Do u know anyone that has a buildup on putting on n a tj I've looked for one but haven't seen any write ups, was looking at doing it but would like to read thru a write up and c what all I need and the cheapest place to get the stuff

The best I can say is search; there are so many threads and writeups it would be hard to pick just one. For example:

For York OBA:

https://www.google.com/#safe=off&hl=...=1920&bih=1025

Sanden OBA (stock A/C compressor):

https://www.google.com/#safe=off&hl=...=1920&bih=1025

CO2:

https://www.google.com/#safe=off&hl=...=1920&bih=1025

This forum probably doesn't have nearly as much good information; it's nice for some things, but you'll have much more luck looking at places like JeepForum and Pirate4x4. There is a ton of information out there on the subject.

Once you start researching a bit you'll have more specific questions and we can probably help you better.


Quote:

Originally Posted by brs256 (Post 3781818)
i have a viair kit ... i got the constant duty compressor coupled with the 2 gallon tank ... takes me about 15 minutes to air up from 15-35 psi

its pricey, but its a simple install .. and everything is included in the kit, i may switch to a York at a later date ... but i have no plans to do so as of yet, my oba is more than adequate for my current needs and near future needs(35"s)

Viair makes good stuff, but the "pricey and slow" (and like Jerry said, noisy) are what keeps me from going that route. With either my CO2 or an engine driven compressor, I could probably fill up a 35x12.50 tire from 6-8 PSI to 25 PSI in 1 minute or so.

The nice thing about the 12V compressors are they're easy to setup.

NC Bear 05-22-2013 12:55 PM

Does anyone have a write up on converting your AC over?

geiman 05-22-2013 12:59 PM

Quote:

Originally Posted by NC Bear (Post 3781881)
Does anyone have a write up on converting your AC over?

The link I gave above for the search about Sanden compressors is what you'll want to start looking through. The stock A/C compressor is made by a company called Sanden, hence the name. There are many many writeups on doing so. Specifically, here are some of the ones I've bookmarked for myself:

A/C to OBA conversion write up -PICS - Page 2 - JeepForum.com
Sanden Onboard Air System Write up - JeepForum.com
Sanden On Board Air - JeepForum.com
On Board Air System
On Board Air
A/C to OBA conversion write up -PICS - JeepForum.com
http://www.wranglerforum.com/f19/san...ml#post1278692
Grungles Homepage

NC Bear 05-22-2013 01:13 PM

Quote:

Originally Posted by geiman (Post 3781900)
The link I gave above for the search about Sanden compressors is what you'll want to start looking through. The stock A/C compressor is made by a company called Sanden, hence the name. There are many many writeups on doing so. Specifically, here are some of the ones I've bookmarked for myself:

A/C to OBA conversion write up -PICS - Page 2 - JeepForum.com
Sanden Onboard Air System Write up - JeepForum.com
Sanden On Board Air - JeepForum.com
On Board Air System
On Board Air
A/C to OBA conversion write up -PICS - JeepForum.com
http://www.wranglerforum.com/f19/san...ml#post1278692
Grungles Homepage

thanks a million geiman. I appreciate it.

geiman 05-22-2013 01:15 PM

No worries; if you use google to search the forums like I did in the above links you can find a ton of information on this, it's a pretty popular thing to do.

PStov98TJ 05-22-2013 01:19 PM

Quote:

Originally Posted by geiman (Post 3781947)
No worries; if you use google to search the forums like I did in the above links you can find a ton of information on this, it's a pretty popular thing to do.

^^^Times a million. I don't like the search function on the forums. Google is definitely the way to go. Mainly because you can search multiple forums at once essentially and just open a bunch of tabs and read them all and bookmark ones you find important or helpful.

geiman 05-22-2013 01:21 PM

Quote:

Originally Posted by PStov98TJ (Post 3781958)
Mainly because you can search multiple forums at once essentially

Very true, but I actually meant searching one forum at a time to get a more thorough look at things. Like so:

your search term goes here site:http://www.jeepforum.com

Either way is fine, but many people don't know you can use Google to search a specific site. It's much easier to find what you're looking for doing that.

NC Bear 05-22-2013 01:21 PM

Yea, I had just started thinking about this conversion last night while I was waiting on the magistrate to set the conditions of release for the impaired driver that I arrested and really have not had a chance to start google'ing .

heading off to the links you posted now...

NC Bear 05-22-2013 02:56 PM

ok I have searched and I have a question as I did not see an answer.


It appears that my clutch does not work, (tried to jump it with a piece of steel wire at the relay and it did not engage.

Does the clutch have to work for the air conversion to work?

geiman 05-22-2013 03:02 PM

Yes, the clutch does need to work. If the clutch doesn't work, the pulley will rotate but it won't spin the compressor so no air will come out.

Just to verify: you traced the electrical wire coming from the compressor, unplugged it, and hooked it up to 12V to test the clutch? You should hear it click if it works.

JFjeld 05-22-2013 03:30 PM

NC Bear, I personally did the A/C conversion on my Sanden compressor within the last 6 months. Here is a link to my write-up on one of my old Jeep forums, and it includes a link to the write-up I followed from JeepForum (see thread starting 11/29/12):
JFjeld's Build

My post has a list of parts I used. My setup does not run a tank (I didn't want to deal with clearance and extra plumbing). I can air up my 35s from 8-28 psi in about 1.5-2 minutes each. The only downside is all of the people that want to use the air. But I'm extremely happy with this setup and already had the a/c compressor that I wasn't using.

Feel free to PM me if you have any questions.

NC Bear 05-22-2013 04:21 PM

Quote:

Originally Posted by geiman (Post 3782290)
Yes, the clutch does need to work. If the clutch doesn't work, the pulley will rotate but it won't spin the compressor so no air will come out.

Just to verify: you traced the electrical wire coming from the compressor, unplugged it, and hooked it up to 12V to test the clutch? You should hear it click if it works.


No, I watched a video on youtube and used a wire to act as a jumper on the wire that I unplugged. It worked on the video, but the clutch did not spin on mine like it did his.

but yea, I traced the wire from the compressor, disconnected it and jumped the wire. The Jeep was running at the time.

NC Bear 05-22-2013 04:22 PM

Quote:

Originally Posted by JFjeld (Post 3782384)
NC Bear, I personally did the A/C conversion on my Sanden compressor within the last 6 months. Here is a link to my write-up on one of my old Jeep forums, and it includes a link to the write-up I followed from JeepForum (see thread starting 11/29/12):
JFjeld's Build

My post has a list of parts I used. My setup does not run a tank (I didn't want to deal with clearance and extra plumbing). I can air up my 35s from 8-28 psi in about 1.5-2 minutes each. The only downside is all of the people that want to use the air. But I'm extremely happy with this setup and already had the a/c compressor that I wasn't using.

Feel free to PM me if you have any questions.


Thank you!!!

geiman 05-22-2013 04:25 PM

Quote:

Originally Posted by NC Bear (Post 3782544)
No, I watched a video on youtube and used a wire to act as a jumper on the wire that I unplugged. It worked on the video, but the clutch did not spin on mine like it did his.

but yea, I traced the wire from the compressor, disconnected it and jumped the wire. The Jeep was running at the time.

Where did you get power from with the jumper wire? I assume the battery, but just want to make sure.

Just one last test, I'd try doing what you did with the Jeep off. That way you can hear if it's trying to click.

If the clutch is bad, you can always get a new compressor from the junkyard; you should be able to find one pretty easily. I looked at replacing the clutch a long time ago on my Sanden, but if I remember correctly it was easier/cheaper to just get a new-used compressor. But I could be remembering wrong.

elclipo 05-22-2013 08:18 PM

Awesome links above. I want to keep my AC but the last link has a separate compressor mount at the bottom. Looks like I'll be going that route.

Jerry Bransford 05-22-2013 08:24 PM

Quote:

Originally Posted by geiman (Post 3782557)
Where did you get power from with the jumper wire? I assume the battery, but just want to make sure.

All you need to test the solenoid is to connect its wire to +12v like at the battery's positive post. You will hear a solid 'clunk' when you apply 12v to it if it is working.

Rebelicious 05-22-2013 11:16 PM

Thanks for all the info. I have OX lockers, so just for airing up tires. The additional ac compressor is the way to go.


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