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Shortest compressor

stretch4x4 on Wed June 01, 2011 4:53 AM User is offline

Year: 2001
Make: Toyota
Model: HDJ79 (Landcruiser ute)
Engine Size: 4.2L
Refrigerant Type: -
Ambient Temp: -
Pressure Low: -
Pressure High: -
Country of Origin: Australia

Hi all,

New to the forum with something a bit different to keep you all on your toes (I am in Australia just to make it that bit more interesting)
I am trying to set up an endless air setup in my landcruiser so I can air up my tyres a bit quicker.
I have found that I can buy a kit but all up it will cost me close to $1000 which is waaaay more than I can afford to spend on it
Apparently they use an ea55 compressor but I think that might be their own code.. If I can figure out what compressor it is though I might be able to find one elsewhere and then build my own bracket..
I have also seen this kit which is for my motor but in a 100 series which has a lot bigger engine bay:

The reason I am looking for a short compressor is because my engine bay is shorter and so in my car I can't afford the space for the second belt as in the second picture. I instead was thinking I could just get a longer belt to go around the existing air condition compressor and then over to the second one (don't want to loose my air con )
As it is the power steering reservoir needs to be moved as it is located where the compressor currently sits. Oh yeah and I can't sit it back any further as it would run into the intake manifold.
One final pic this time of my current engine bay:

Over to the experts, hopefully we can find something that will fit in and what car I can flog one out of over here
Let me know if anymore pics or info is required.


Edited: Wed June 01, 2011 at 4:55 AM by stretch4x4

bohica2xo on Wed June 01, 2011 10:58 AM User is offline

The shortest swash plate type compressor you will find is something like the Seltec TM08. It may be available down under in the Valeo branding.

Blueprints for Seltec compressors Scroll down to the TM08, and look at the sizes. All of the different clutches from that line will fit, so a matching pulley for your belt system is available.

This sort of thing is hard on compressors. Companies like Extreme Outback drill & tap the drain plug for the compressor to add a grease fitting - then pump it full of synthetic grease. It seems to work for them. They use "Magnalube G" for grease. A decent filter on the intake is a must, or the compressor will fail as soon as it ingests a bit of dirt or sand. A filter on the discharge side is also important. Avoid running the compressor above idling speeds, and be sure to install a pressure relief valve in the system. An A/C compressor is capable of producing more than 450 psi, and more than one off roader has hooked up an air hose to a homebrew system only to discover his 250 psi hose becomes a bomb at 500 psi.

Good luck with your project.


"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

stretch4x4 on Wed June 01, 2011 8:54 PM User is offline

Thanks for your help.
That looks really good I had a look at the TM08 Alternator mount and from the belt centre to the rear of the compressor is 154mm.
From my really really rough measurements in my engine bay I have about 145mm from the centre of the belt to the intake that I can't move. (Of course I need to move a few other bits before of this is even possible..)
I am guessing serpentine belts like most belts aren't particularaly fond of running on an angle

Thanks for the tips re converting to a compressor. I had read about lubricating them either using an air tool lubricater and seperator or as you suggested filling with grease which sounds simpler.. I note they are rated to 6000rpm which my motor can't get to but you advised not to go over idle rpm is this due to the pressures generated when spinning faster? I was hoping to be able to flick a switch in the cab and have the compressor fill up a tank for the last few minutes of driving. Would an relief valve allow me to run it at higher rpm so that if too much pressure say above 250psi does build up it can escape..?

Thanks again

stretch4x4 on Sat June 04, 2011 1:48 AM User is offline

Also would anyone be able to give me a hint as to which cars those compressors would be found in or how to find out..?
If I can find one cheap enough I might just go look for it and see where I can fit it..

bohica2xo on Sat June 04, 2011 2:45 AM User is offline

The maximum rated compressor speed of 6000 rpm is predicated on oil lubrication, and refrigerant gas in a sealed system. Many vehicles have a 2:1 overdrive on the compressor from the engine crankshaft - some even higher than that.

Running a grease packed unit at high rpm will shorten it's life. I would consider 3000 rpm at the compressor shaft to be the upper limit in that condition. That is still a lot of air. Any compressor you use will have a displacement per revolution rating - at 150cc/rev & 2000 rpm that is like 300 litres / minute. About 10 cfm.

A relief valve is mandatory. If you plan to run a tank, a constant run unloader would be a good idea. Click HERE and scroll down to the "Load Genie Mark III". This is the same unit I use for constant run compressors here. That would make the system safe.

As for what cars used that compressor? Hard to say where you are. Look in the junkyards at the small jap cans. Perhaps a Kei car if you have any there. Just remember you need a fixed displacement compressor, because a variable displacement unit will not pump much when the suction side is at atmospheric pressure...


"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

stretch4x4 on Sat June 04, 2011 7:55 AM User is offline

Ah yes fair enough.
Shame I don't have room for a bigger pulley..
But I guess I could skip having a tank and loading it up before I stop..
I haven't gone looking but most of them still seem to have mid size sandens.. Will see what a Kei would be over here.
Really need the smallest unless I can figure out a way to reduce the speed slightly and shift it somewhere were I have more space.

Thanks again

94RX-7 on Sat June 04, 2011 1:04 PM User is offline

You might consider a Denso TV series compressor (TV12C, TV14C and supposedly there was a TV10 as well). It is physically on the smaller end of the spectrum, although mounting could be tricky since it uses thru-hole mounts, not ear mounts. Other possible benefits for your application include a built in oil separator/sump with an oil injector that injects oil into the vanes that do the compressing. Can't fill it full of grease tho, I don't think the oil injector would be able to do anything with that....but it probably would do fine with a high viscosity oil, and a high shear strength gear oil would probably make it *super* happy unless it played havoc with some of the seal materials. The biggest application for this compressor, by far, was the 1st generation Miata (TV12C). They were also used on some Toyota Tercels and the FD RX-7 (TV14C). Either would work fine...the TV14C has more displacement per revolution, but 20cc more likely wouldn't make much difference for your purpose. You've also got a wide variety of Denso clutches to choose from.

stretch4x4 on Sun June 05, 2011 8:27 AM User is offline

This also sounds interesting..
Shall research those some more.
I am probably up for just looking through every car I can find at the wreckers to see if they have a smallish compressor..
Not ideal but working from the other end seems to be like looking for a needle in a haystack..

stretch4x4 on Sun June 05, 2011 8:42 AM User is offline$file/Compressor%20Section.pdf
Page 37:
Denso Compressor - TV10CB
Ref No: 1610
• 1 12V
• 1 135mm 4PV pulley
Body No: 442500-165_
Clutch No: 447300-11 5_
OEX No: CLX1150
That sounds promising although I still need to track down how long it is.. Apparently they come from dihatsu Charades..

94RX-7 on Sun June 05, 2011 1:15 PM User is offline

The Denso application guide I have shows the TV12 and TV14 to both be 208mm from the front of the clutch to the rear of the compressor. Sounds like it may be too long.

ice-n-tropics on Sun June 05, 2011 7:21 PM User is offline

Ga-day 4X4
It's dubious, but your best chance of success is to use a swash plate type of compressor which does not circulate suction gas through the grease filled crankcase. The Sanden SD5H11 keeps the suction gas in the cylinder head area, not the crankcase. I'd back off the adjusting screw (against the fixed gear) 90 degrees (and restake) to decrease bearing loads. Also open up the discharge outlet in the head to prevent grease blockage. 1500 rpm and a few minutes max.

Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy. How To Air Condition Your Hot Rod

bohica2xo on Sun June 05, 2011 11:05 PM User is offline


The kei car is not a model, but a type. Nissan, Toyo etc. make these tiny cars that are short enough to park by backing into the curb at 90 degrees - they are the same length as a real car is wide.

Good advice from Hotrod, he knows a lot about the internals on the sanden line...

I would make sure to stand way back if you try this trick with a vane compressor - flying parts are a possibility.


I gave up trying to tell the 4X4 crowd that this is bad idea. Now I just concentrate on making it safe. I have seen some real hack jobs using old York units. The best one was letting it cycle on an old HPCO switch, feeding a BBQ tank. He wanted a regulator for the hose, because it kept exploding harbor freight hoses...


"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

stretch4x4 on Sun June 05, 2011 11:21 PM User is offline

Yes I did find out about the kei cars, never finished looking into which ones we get here though.
Yeah Sanden is what most use and adjust them as such but I am struggling with the space constraints

Maybe I need to look at getting the compressor off an actual air compressor so that it can take the load better..

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