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Old 12-19-2013, 07:34 PM   #1
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decent on board air compressor

i wanna get myself a christmas present and i was thinking about a decent oba system for my jeep with airing down tires and things like that whats a decent air compressor for under $150?

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Old 12-19-2013, 07:36 PM   #2
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Q Industries MV50 SuperFlow High-Volume 12-Volt Air Compressor : Amazon.com : Automotive


i was looking at this but its kinda cheap and idk if i trust it

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Old 12-19-2013, 07:48 PM   #3
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Did ok in previous vehicle to air up 32" tires. With 33s on the jeep it required multiple breaks to cool down in order to air back up. Needless to say I dont use it anymore. I built a CO2 tank system to use until I invest in a York. CO2 tank was about $90 and regulator was $55. About $20-30 for a hose and some other things that came in a kit at the hardware store. I got my regulator from either amazon or ebay. It is a set 150psi one I believe. Tank I got from an online fish tank place sorry I dont remember what its called. I would get an aluminum tank bc its a lot lighter. Full 10lb tank airs up about 20-30 tires depending on how much you air down I guess.
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Old 12-19-2013, 07:51 PM   #4
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i wanted the compressor because of an airhorn the original jeep horn cant hurt your ears if your head was against it and where i live at people like to cut out in front of you
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Old 12-19-2013, 07:51 PM   #5
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I got my ARB high output (ckma12 I think) for $180 new from a really nice guy on eBay. Takes my 33's from 10 to 28 psi in under 2 minutes and has never given me problems.

For a cheaper compressor I know Viair makes good compressors.

Also, make sure the compressor you get is meant to be mounted for OBA (mounting points, water resistant, vibration dampeners, and wiring system with relay). For oversized tires you probably want 2CFM+ at 60psi or whatever they test it at. Cheaper ones will advertise that they do 3cfm or more but that's at 0PSI and will end up being much slower than a high quality compressor.
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Old 12-19-2013, 07:52 PM   #6
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also when we go beach riding we have a few fourwheelers and trucks that we air down so a co2 tank would only last two or three trips
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Old 12-19-2013, 08:03 PM   #7
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Old 12-19-2013, 08:41 PM   #8
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Ive got the MV 50. Works great
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Old 12-19-2013, 08:59 PM   #9
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Is a slime good? It also caught my eye
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Old 12-19-2013, 09:20 PM   #10
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I recently picked up a York 210 and will be doing a belt driven set up slowly so I can do it right but in the mean time I set up a decent system with a 12v one.

A lil while back Amazon made a HUGE pricing error that was posted on forums all over the internet and for almost 30 hours this compressor (Smittybilt 2781 - Smittybilt Heavy Duty Air Compressor - Quadratec) was $24 bucks. At that price I couldnt pass it up.

It does very good for being Smitty and 12v. I used it on my 35s with no tank in the beginning. It would go from 18psi to 36psi in just around 2.5 to 3 minutes each. It got a little quick when I started running a tank.

The only thing I didnt like about it was the quick connects are Smitty specific. I like their chuck as it screws on to the tire and I can walk away for a minute while it airs up but I couldnt use anything else with it. Didnt matter after I started running a tank obviously.
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Old 12-20-2013, 01:38 AM   #11
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I would say go for a York Belt driven, but its not going to be in a $150 budget. Some of those 12v compressors are junk and will last little while before they start to fail. I would consider a CO2 setup. From what I heard, filling a tank costs like $20? One tank should be able to hold enough air for multiple trips worth of airing up.
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Old 12-20-2013, 05:21 AM   #12
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i wanted the compressor because of an airhorn the original jeep horn cant hurt your ears if your head was against it and where i live at people like to cut out in front of you
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Old 12-20-2013, 10:39 AM   #13
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I got my ARB high output (ckma12 I think) for $180 new from a really nice guy on eBay. Takes my 33's from 10 to 28 psi in under 2 minutes and has never given me problems.
X2..My ARB cost me a little more, but it was well worth it.
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Old 12-20-2013, 11:03 AM   #14
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To run an air horn you'll need a tank. I think they are out of your price range, but the Viair OBA kits are great. I run the Viair Heavy Duty system and really like it. It runs my ARB locker and I use it to air up my 35's with no problem.

I want to get an air horn hooked up too, but haven't gotten around to it yet.

Let me know if you have any questions!

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Old 12-20-2013, 11:09 AM   #15
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Not sure if this will be helpful or not, but I intend on doing some junkyard treasure hunting when the weather warms up a bit !
York Compressor for On-Board Air
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Old 12-20-2013, 12:08 PM   #16
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Won't satisfy an air horn, just airing up (it is tankless)
But i love my viair. Way more powerful/reliable than others I have seen in its class and love being tankless because it doesn't hardly take up any room.
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Old 12-20-2013, 12:21 PM   #17
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well if it cost that much to get one with a tank i would save up and get a horn blasters kit
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Old 12-20-2013, 12:24 PM   #18
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either that or could i get a direct drive and just hook up a tank under neath the hood and use the instant air compressor to fill it up whenever and have the air horn hooked up to the tank
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Old 12-20-2013, 12:40 PM   #19
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would a viair 2.5 gallon tank fit somewheres underneath the hood? or i could only fit a 1 gallon?
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Old 12-20-2013, 01:23 PM   #20
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well instead of doing it half a$$ ima get a viair kit with a 2.5 gallon tank
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Old 12-23-2013, 10:44 AM   #21
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Quote:
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would a viair 2.5 gallon tank fit somewheres underneath the hood? or i could only fit a 1 gallon?
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well instead of doing it half a$$ ima get a viair kit with a 2.5 gallon tank
I think you'll be happy with that choice. I mounted my tank under the tub on the driver side between the drive shaft and the frame. The compressor I against the fire wall on the driver side where there is that little shelf from the factory. And All the wires and airlines ran along the frame. My quick disconnect for the air hose is also under the hood up high and dry.

Let me know if you have any questions about the install!

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Old 12-23-2013, 11:06 AM   #22
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i wanted the compressor because of an airhorn the original jeep horn cant hurt your ears if your head was against it and where i live at people like to cut out in front of you

buy a simulated air horn and a 100w speaker. my siren/light controller has one and as long as you have battery power you never run out of horn.
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Old 12-23-2013, 01:53 PM   #23
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Anyone who says that you need a tank to run an airhorn with a York compressor is WRONG. I had a friend that had a button on his dash that activated his York instantly to sound the airhorns. It worked great!

Here's another option for an electric compressor: http://www.lowrangeoffroad.com/index...ssor-mv90.html

I've never used one, but it's supposed to fill tires almost twice as fast as an MV50.
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Old 12-23-2013, 01:59 PM   #24
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Anyone who says that you need a tank to run an airhorn with a York compressor is WRONG. I had a friend that had a button on his dash that activated his York instantly to sound the airhorns. It worked great!

Here's another option for an electric compressor: http://www.lowrangeoffroad.com/index...ssor-mv90.html

I've never used one, but it's supposed to fill tires almost twice as fast as an MV50.
Unless your engine isn't running...
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Old 12-23-2013, 02:01 PM   #25
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Unless your engine isn't running...
Then why would you need your air horn?

Edit: If you're talking about filling tires, the MV90 will still fill tires about twice the speed as an MV50 will, but will also deplete your battery twice as fast.
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Old 12-23-2013, 02:05 PM   #26
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Then why would you need your air horn?
No idea, maybe in an emergency? Engine won't start and you need to alert people of your location? This is assuming you remove your stock horn. Having an air tank also makes it easier to use the horn in my opinion. If you had the tank stay at a set psi, engaging the pump when needed, and use a solenoid off the tank to the air horn, you would only have to press the horn button to make it work. Without some sort of stored air you would have to turn the pump on, likely another switch if you have an OBA system. 2 switches vs 1, again, it depends on what other purpose you have for the pump like filling up tires.
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Old 12-23-2013, 02:07 PM   #27
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Not sure if this will be helpful or not, but I intend on doing some junkyard treasure hunting when the weather warms up a bit !
York Compressor for On-Board Air
FYI - If you can't find a York when junkyard hunting, the Sanden (stock in some vehicles) compressors are a good alternative. Its not as powerful as a York but does extremely well. This is what I use in my belt-driven OBA and I can air up my 35s from 7 to 36 psi in ~ 2 minutes/each. I think the Sandens typically go for about $50 at the junkyards around here.
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Old 12-23-2013, 02:21 PM   #28
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I think you'll be happy with that choice. I mounted my tank under the tub on the driver side between the drive shaft and the frame. The compressor I against the fire wall on the driver side where there is that little shelf from the factory. And All the wires and airlines ran along the frame. My quick disconnect for the air hose is also under the hood up high and dry.

Let me know if you have any questions about the install!

-Ryan
i dont exactly how i want to mount it. i might install the whole unit inside my jeep temporarily until i want to mount it like you said. but the compressor can get wet??? because i have the feeling it will get wet/ covered in mud
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Old 12-23-2013, 02:34 PM   #29
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i dont exactly how i want to mount it. i might install the whole unit inside my jeep temporarily until i want to mount it like you said. but the compressor can get wet??? because i have the feeling it will get wet/ covered in mud
From the Viair Website:

Quote:
Q: Is it important to have a sealed and
moisture-resistant compressor?
Depending on the mounting location of the compressor, this is extremely important. The preference of a sealed-type compressor is due to the fact that compressors are likely to be exposed to outside elements, such as mounting to a chassis rail.
I wouldn't go dunking it under water, but on that "tray" (for lack of a better word) on the driver side of the firewall it stays up out of the water and mud pretty good. The kit includes a good length of air hose with a filter so you can remote mount the intake, even in the cab if you wanted to. You certainly wouldn't want to suck water in there, but if the body of the compressor gets a little wet it won't hurt it.

-Ryan
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Old 12-23-2013, 03:28 PM   #30
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One thing to keep in mind about choosing an air compressor for refilling a Jeep's tires is this... forget all the bragging some compressor manufacturers do about how much air pressure they can provide. They brag about 120-200 psi, but even the smallest air compressors can easily put out that kind of pressure. Even a small hand bicycle pump can produce pressures up to 120-150 psi, that's what I used to reinflate my long-gone racing bike's tires that ran at 120 psi.

The most important specification is the compressor's CFM, which is how many cubic feet per minute it can put out. Some "cheat" on that spec by saying it can put out X CFM into 0 psi. Great, your lungs can put out a lot of CFM into zero resistance (blowing into the open air) but you sure as heck can't put out even a single CFM when you try blowing into resistance like a partially inflated tire gives.

I'd only go with a compressor that can put out no less than 2-3 CFM into something like 20 psi which is a reasonable pressure to have to work into. MY previous belt-driven York compressor could put out 8-10 CFM into 25 psi but that takes a heck of a compressor to put that much out.

So if you choose one that puts out 2-3 CFM into something like 20 psi of resistance, that will be a good choice.

My first compressor was a TruckAir which probably put out .5 CFM and it was VERY frustrating to use. It was barely finishing up refilling my four (then) 32" tires at the 45 minute mark. And the small compressors I hear Sunday mornings at the various 4x4 events run forever, it seems most take at least 30 minutes for all four tires.

My present home-made 10 lb. C02 tank (since my previous York-equipped TJ was stolen) takes maybe five minutes total to refill all four of my 35x12.50 tires from 6-8 psi to 25 psi for the trip home. It only cost me $140-150 to put together my entire C02 tank system, that may be an alternative to consider.

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