12v air compressor for off road

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For a portable unit... I love my Viair 400P. Even though its not 100% duty cycle, I like that it's faster than it's 100% duty cycle cousin 450P...

Being a higher volume pump than the 450P, and you spend less time pumping, and less time worrying about hitting that duty cycle.

I can easily get though all 4 tires before hitting any duty cycle limits and it goes pretty quick.

For on board air... I could see myself going with something similar, ARB units which seems VERY solid, or a couple 450P in parallel and a tank would be really good buy I have yet to find the room for all this stuff.

Alternately, CO2 tanks seem to be popular with the guys want to get to get it done quick.
 
The tsunami mv90 is the way to go for tire sizes under 35in. Even that takes awhile. York compressors are definitely the best tho.


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I already have a 400P but this thread just made me buy another air compressor haha.

The 88P looks pretty good, for $45 it seems like a good value.

I'll probably use it as a backup compressor and store it in my other truck.

The only thing I don't like about the 88P is the permanently attached air hose. I like how the 400P is setup but ill deal with it for the price.

If I could use traditional air fittings, this would make for a nice budget OBA project since it is pretty small.
 
Using a CO2 system like Powertank or a homebrew version is the best bet for versatility and portability. Unless you want to carry 50' of hose. You don't have to go with one of their $500 10lb. setups either. Just go with a UTV setup and it will fill probably 8-10 tires from 20-30psi. Unless you air down a few times a month, it's definitely less hassle than running a compressor that requires a wiring, a large space, and is slow.

Just my opinion.
 
Even if I have a CO2 setup, I would still have an air compressor available.

As much as I like CO2 setups, it's all fun and games until the tank runs dry, and off-road, any air, even slow air, is better than no air.
 
I have a Viair 450c system mounted under the hood. Had the same system in my Jeep for awhile and worked great airing up 35's. I used to use CO2 but didn't like having to get the bottle filled. Also didn't like the idea of carting around a compressed gas cylinder in the interior of my vehicle. Much prefer the Viair setup.
 

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Nice setup... id love to have a tank but space is at a premium these days.

I would put it in the same area but its currently home to "a bunch of other stuff"
 
How did you mount the tank and compressor? Did you have to move anything.

drivermod said:
I have a Viair 450c system mounted under the hood. Had the same system in my Jeep for awhile and worked great airing up 35's. I used to use CO2 but didn't like having to get the bottle filled. Also didn't like the idea of carting around a compressed gas cylinder in the interior of my vehicle. Much prefer the Viair setup.
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Many electric compresser setups will not support air tools. I carry male and female threaded npt fittings. In case of emergency I can daisy chain two separate vehicles air systems. This can create other long term problems. Will work great in case of an emergency.

I run an Air Zenith compresser on my Dodge truck. It's a bit big for a 4runner. Amp draw is also quite a bit. It works really awesome.
 
If you have a decent tank setup, you can still run tools even with a conservative air pump, but if you need a high duty cycle you will be waiting a while.

An ideal air tools setup would have a higher operating pressure, like those 200 PSI Viair systems using the 444C pump.

That said, I am hard pressed to find places for tanks on the 4Runner...
 
pixjohn said:
How did you mount the tank and compressor? Did you have to move anything.
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The only thing I had to move was the air intake tube. I removed the molded plastic piece on the end of the tube and then rotated the tube 180 degrees placing the inlet near the firewall. I used a couple of existing bolts as well as drilling 3 new ones to mount the tank and pump. I did have to do a bit of fabrication to get the tank to fit uner the hood. I don't think it would work as supplied from Viair. I had already shortened the tank mounts because I used to have it mounted under my Wrangler and didn't want it to hang down below the frame. I also made a small bracket to extend the tank mount near the power steering reservoir. I have a hose chuck mounted on each side under hood so I can easily reach my tires or if I need to share with others.
 
Bumbo said:
That said, I am hard pressed to find places for tanks on the 4Runner...
Click to expand...

If you have or get an aftermarket bumper with a carrier for your spare tire, you free up a lot of space under the back. That might be a good place for a tank.
 
The viar 400 is great. I dont have mine mounted and it just clips to the battery with some alligator clips. Only issue I have with it is how hot it gets. If im in my tundra or tacoma I can just throw it in the bed until its cooled completely. You just have to be careful to let it cool down as you might melt the bag it comes in.
 
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