Outer Limits 4x4 Board

has anyone every done a home made on board air kit for there car, bushranger want $1200 for a pump and the tank and hose's. Would it work to get a compressor from super cheap and a 3 gal tank or bigger connect it with rubber hose lines and wire it up to ya car with a switch in the cabin and mounting the compressor in the engine bay and the tank in the rear of my mq, would that work???????

your forgetting the preassure switch too. Its cheaper buying a $89 supercheap compressor for the tank and preassure switch than buying them individually. Water fire extinguishers make great air tanks too weigh about 2kgand if you mount them upside down you have a water bleed too.

Andy

andrew e wrote:your forgetting the preassure switch too. Its cheaper buying a $89 supercheap compressor for the tank and preassure switch than buying them individually. Water fire extinguishers make great air tanks too weigh about 2kgand if you mount them upside down you have a water bleed too.

Andy

I would use CO2 Extinguishers for a cly....handle much more pressure

I bought a cheap 240v compressor mainly for the tank and pressure switch, A hella socket can be made to fit into the pressure switch casing, mine works well, but I just chuck it in the back of the troopy, I'm going to mount it under the car as there is plenty of room.
It shuts off power to the Max-air when it hits 110PSI ( adjustable )
I have a switch on the dash that opens a solonoid valve to let regulated low pressure into the diffs to keep the water out, when the switch is off it vents the pressure out.
Stu

Sure...

York 210 from breakers: $15
Fab mounts, V-belt, hoses, fittings, tank, pressure switch, 3 way toggle switch, pressure relief, quick disconnect..... maybe $100 to $150.

amshaw wrote:I would use CO2 Extinguishers for a cly....handle much more pressure

A Typical 9L water extinguisher has a working pressure of about 200psi (some 100psi, easily enough checked though) and a test pressure of about 390psi. 9kg DCP typically tested to about 360psi with a working pressure of about 160psi. They are more then capable of handling the job, just more susceptible to denting and rusting compared to a CO2 cylinder.

http://www.outerlimits4x4.com/PHP_Modul ... hp?t=81238

I now have this system installed in me truck. It's FAST!!!!!!

I don't have room in my engine bay for an endless air set up, but after fitting this i wouldn't bother even if i did have room. Check it out. I know you can build an endless system for 200 bucks if you know what you're doing, but for how easy this was to install, maintainence free operation, and bloody fast air this system, so far, has impressed my pants off (not a pretty sight). Now i have it all connected with no leaks etc, this pumped up my Q78 swampers from 24 to 30 psi just as fast as my workshop set air system.

What about the air-up system? Basically looks like a CO2 cannister with a hose and shraeder valve fitting. Yet they're asking over $700 for it.
How feasible would it be to just simply add a hose and fitting to a CO2 cannister?

does the pressure switch shut the air off and where do i put the pressure switch in the system??????

Running straight from the CO2 valve would be fun as you are looking at a min pressure of 800 PSI depending on ambiant temp

Dave

I picked up a compressor for $150 rebuilt for air, small air tank from a truck wrecker was $50

I use air-up for home brew and thought it might be a good idea to use on the truck aswell but the regulator is the expensive bit. Bloody fast though. One day maybe.

i too am in the process of fitting oba. i was going to use a york on fabbed mounts but came across a cheep double cyl, 12 volt jobby from deals direct. will plumb that into a tank instead i think.

is air up food grade co2?

stoo2 what pressure do you run into the diffs and has it worked both front and rear?

Thinking of doing the same to the Disco, sick of rusted bearings. Going to connect it to the Sanden AC compressor system that is hooked up to an old water extinguisher fitted above the rear diff and which has worked a treat for over a year now and cost around a 100 bucks including fittings. hose etc.

Reddo wrote:stoo2 what pressure do you run into the diffs and has it worked both front and rear?

Thinking of doing the same to the Disco, sick of rusted bearings. Going to connect it to the Sanden AC compressor system that is hooked up to an old water extinguisher fitted above the rear diff and which has worked a treat for over a year now and cost around a 100 bucks including fittings. hose etc.

I have only used it a couple of times, I tried 4 PSI, it all works well as far as pressurising the diffs when I hit the button, and venting it off when released. Soon after I fitted this I did a rear axle seal but I think it's a coincidence rather than being a result of the pressure. My car is only 18 months / 65K old and the bog holes are really taking their toll, I'm trying to stay away from the mud now.
Stu