A/C pump as air compressor...

Posted: Tue Jul 08, 2003 9:10 pm

Putting A/C compressor for inflation duties (ARB just can't pump up those dolls quick enough Laughing

) in '86 hilux, 2.4 diesel motor. already has A/C pump in , but this is for my A/C. Has anybody piggybacked a compressor in the engine bay (the battery has been moved under the tray).

Joined: 22 Nov 2002 Location: Logan Village,Brisbane.

Hey troy when your at SCC ask to have alook at Wes's set up with his air system. Its easy and cheap and i think you will like it.

Posted: Wed Jul 09, 2003 10:08 pm

yeah i am looking at doin this 2 mine now and mine will b 2 hard i think even with the battery not there

Posted: Wed Jul 09, 2003 10:13 pm

hypolux wrote:

yeah i am looking at doin this 2 mine now and mine will b 2 hard i think even with the battery not there

Do you have A/C in your ride, Ben?

Posted: Wed Jul 09, 2003 10:25 pm

yes, thats y i think the brackets will b 2 hard

i am looking into a opposite lock twin tongue compressor 4 tyre inflation pricey but apparently they r good

Posted: Wed Jul 09, 2003 10:40 pm

i just had a gr8 thought 4 doing mine ill get back 2 u wen i sus it out 2morra

Posted: Wed Jul 09, 2003 10:51 pm

I was looking at hooking up a complete system with res tank and regulated output, and outlet fittings front and rear. I want to keep the A/C. A rattle gun is the go for this system, as well as fast tyre reinflation. Even thought about a 12v motor and A/C compressor, but didn't want to be a pioneer and spend big $ to make something, when I could have bought the items commercially for a lot less. might have to compromise and go with an electric compressor...

Joined: 11 Dec 2002 Location: Central Queensland

54
Look for endless air on the web. I have the same type of system, beat ANY 12 volt compressor hands down.

Joined: 27 Jul 2003 Location: central coast NSW

I think endlessair replace the bearings with pre greased sealed jobbys Idea

Posted: Sun Jul 27, 2003 4:31 pm

done some homework, I'm going to use an additional factory compressor for my 2L motor and just add a tool oiler to the system for lube duties, filter it off with a coalescing filter or regulator. will post some pics on brackets and stuff.

Joined: 09 Apr 2003 Location: Carrum Downs V Posts: 3330

2l motor in a gq???

Posted: Sun Jul 27, 2003 7:55 pm

CRUSHU wrote:

2l motor in a gq???

No, in my hilux.

Joined: 29 Oct 2002 Location: Brisbane

54, i'd just go with the grease setup, its much simpler than have an oil and seperator etc.

atm me and my old man (who's an air-con mechanic) are working out a universal design setup, using a common compressor. my vitara is gonna be the guinea pig for it, but we'll be able to make em up and sell em for heaps less than that other mob with their blue compressors Wink

Posted: Mon Jul 28, 2003 7:14 am

antt wrote:

54, i'd just go with the grease setup, its much simpler than have an oil and seperator etc.

Ok, when you say grease setup, you mean use the grease as the lubricant. To me, that sounds like a lot work. A lot of rotary compressors are designed to run with oil held in vapour suspension in the A/C gas, oil enters the compressor via the suction port (s) lubes the unit, then exits with the compressed air via the discharge (d) port. To my way of thinking, the grease system would need a lot of internal modifications to work - first thing that comes to mind is the viscosity difference between grease and a lube oil (some mention ATF), and where does the excess grease go when you 'pump the nipple'? Some of these compressors have a sump, but again these are designed to hold oil, not grease.

Joined: 29 Oct 2002 Location: Brisbane

what i mean about the grease setup, is similar (i assume) to the way the endless air compressors work. instead of the lubricant being in the gas, it is not actaully in the 'cylinders' of the compressor, be underneath each of the pistons.

there is a guy my old man knows that has been doing it this way for years to the 508's. his are used on a lot of minitrucks, motorhomes etc that run airbag suspension. and he hasn't had many problems with em.

just remember, the compressor will actually be turning bugger all compared to a normal ac compressor that runs whenever the cars on (welll in QLD anyway), you might only use it twice a month to pump up your tyres after some fun, so it'd only be running for all of 15 mins a month.

like i said, me and my old man are hopefully gonna sort out a setup on my vitara this week. its easy on mine, cause i don't have aircon so i can use the standard mounting location. but in the future we hope to be able to make em up and sell em.

Posted: Mon Jul 28, 2003 9:46 am

Keep us posted on the progress.

Joined: 29 Jul 2003 Location: Newcastle

I've been using a compressor with a grease setup for the last 12 months, no problemo. Screwed the plug out of the top, drilled a hole in the plug and tapped a thread for a grease nipple. My first attempt was with an inline oiler, and the compressor siezed up after 3 months.

cheers Rob

Posted: Wed Jul 30, 2003 9:41 am

Old Yella wrote:

I've been using a compressor with a grease setup for the last 12 months, no problemo. Screwed the plug out of the top, drilled a hole in the plug and tapped a thread for a grease nipple. My first attempt was with an inline oiler, and the compressor siezed up after 3 months.

cheers Rob

wot sort of compressor is it Rob ?? and do u use a seperator on the outlet side 2 stop any grease or oil from coming out into the lines/tyres/wotever u pump up ??

Joined: 29 Jul 2003 Location: Newcastle

I haven't been using any seperator at all. When you think about it, any service station air could have any oil, water, crap, coming out. You don't know when they drain their tanks or if they do at all. Ben I don't know what kind of compressor it is but I can show you next time I see you. When I put my new short tray on in a couple of weeks, I will be running a tank with a drain in it.

Rob

Posted: Wed Jul 30, 2003 10:08 am

Old Yella wrote:

I haven't been using any seperator at all. When you think about it, any service station air could have any oil, water, crap, coming out. You don't know when they drain their tanks or if they do at all. Ben I don't know what kind of compressor it is but I can show you next time I see you. When I put my new short tray on in a couple of weeks, I will be running a tank with a drain in it.

Rob

The compressor at the local servo is a different type to the type under your bonnet. The servo compressor would be a piston/cylinder arrangement, whereas the one under your bonnet would be a rotary pump, if as you say you put a grease nipple in the bolt on the top. The servos are required by law to regulate the pressure coming out of their air lines, the regulator would take care of any suspended oil or moisture. Imagine the law suit if little jonny got shrapnel from blowing up his pushy tyre with 130psi?

Joined: 29 Oct 2002 Location: Brisbane

well my old man spoke briefly to the guy that makes these things up. i didn't get much info, but he said, DO NOT use a grease setup on a nippondenso compressor, they only work on the sanden compressors.

as the standard compressor in my vitara is a nippondenso unit, im gonna stick with it and run an oil/air seperator that runs straight back into the compressor, and a overheat cutoff switch to make sure that she doesn't get too hot under the collar.

Joined: 29 Jul 2003 Location: Newcastle

I had a look at mine and it is a Sanden. I tried running a normal air hose but the outlet end was getting too hot and soft.I now run about 300mm of annealed copper pipe from the outlet, because of the heat after inflating the tyres on 4 or 5 4b's . At the end of the copper pipe I run a 125psi blow off valve on a T piece , then a hose to the end of my truck. I run a hose that is oil and heat resistant, I tried running a 90psi blow off but because it is close to the pump I was losing too much pressure. This setup is very simple cheap and very effective, it cost me about $50 to set up. I can pump my 35's from off the bead to seated and fully inflated in about 3 minutes.

Rob

Posted: Wed Jul 30, 2003 6:17 pm

what the 125psi blow off from??

Joined: 29 Jul 2003 Location: Newcastle

The blow off valve is from a 240v air compressor. You can buy these from trade tool centres, or look in the yellow pages for air compressor spare parts. They only cost about $15.

cheers Rob