Endless air on TDI

[Diff]

Has anybody fitted an endless air compressor onto a TDI 300? I have a friend who has made his own setup using an old air conditioning compressor on his Rangie. However his is a V belt and the TDI is serpintine and I don't know how it will effect the tentioning system, which belt to drive it off or where it will fit!

Any Info would be appreciated as they are a great system.

[Grizzly_Adams]

Hiya Diff.

Have a look at this setup from Defender200Tdi:

http://www.aulro.com/modules.php?name=Foru...ght=onboard+air (http://www.aulro.com/modules.php?name=Forums&file=viewtopic&t=4154&highlight=onboard+air)

[Defender200Tdi]

Hi Diff

Are we talking Disco or Defender, and do you already have the factory A/C fitted? It you don't have A/C already you can simply get the factory brackets and belt to mount it all up.

Presuming you do have factory A/C, then I believe you can get an extra V belt pulley that bolts onto the front of your exisiting crank pulley to allow you to run a single v belt to the compressor. You may have to source it out of the UK though, unless you can find something off another vehicle type here in Oz that you can make fit.



Paul https://www.aulro.com/afvb/

[Diff]

Thank you Grissly Adams and Defender200TDI. I should have mentioned that it is on a 96 Discovery. I just gave it a wash and had a look. No spare pulleys and really no room. I think its a dead loss https://www.aulro.com/afvb/ . Its just this type of system using an airconditioning compressor pumps your tyres up in no time even without a tank. The ARB compressor seems to struggle and take too long. My Super Cheap $60 bit of rubbish takes just as long to do the job then has to sit their for 15minutes befor cool enough to put in the bag.

[Cobra]

Hi Diff

I've had this system on my '95 Disco 300 TDI for the last five years and it works really well. It's way faster than other compressors.

The air compressor is run by replacing the aircon belt idler pulley with a custom made pulley which has both serpentine and V drive.

The tyre compressor then has its own tensionong system.

Cobra

[LRHybrid100]

Originally posted by Cobra
Hi Diff

I've had this system on my '95 Disco 300 TDI for the last five years and it works really well. It's way faster than other compressors.

The air compressor is run by replacing the aircon belt idler pulley with a custom made pulley which has both serpentine and V drive.

The tyre compressor then has its own tensionong system.

Cobra

G'day Cobra,

Any chance of some pix? As currently comtemplating this also

THX in advance

LRH

[Diff]

Cobra,

sounds promising. Did you do the system yourself? Is the idler conversion something you purchase or can make? and finally where is the compressor placed, under the air compressor?

Like LRH said pictures would be great!

[Cobra]

Hi Diff

I did it all myself except the machining of the drive pulley which a mate of mind did on a lathe.

The job is not that difficult surprisingly, it just takes a bit of time fooling around.

Post your email address Diff, and I'll send you the pics.

If your in WA, I'll show you the finished job.

Regards
Rudi

[CraigE]

Cobra,
Great to see anoth WA join the club.
Welcome
Craig
https://www.aulro.com/afvb/ https://www.aulro.com/afvb/

[BMac]

Has anyone looked at an aircon unit/compressor that removable? - mounted in a frame that "clips" to the engine when needed and has a rubber wheel, instead of a pully. The frame would need to include a lever so the rubber wheel is brought into contact with the serpentine when you want air, and the frame could also hold the hose so it packs up neatly.

This way the unit isn't in your way when working on the engine, isn't getting muddy on a good day out, and can be left at home during the week (no dead weight). It would also make it easy to transfer to you next Landy when you upgrade.

I'm able to make the frame pretty easy, but wonder about the rest of it. Do you really need the oil tank/filter etc. Or would the compressor be OK with a squirt of oil between jobs? and simply have a pressure gauge mounted to the unit, feeding the hose.


Thoughts appreciated.

Bruce.

[cooter]

Hi Diff

I've had this system on my '95 Disco 300 TDI for the last five years and it works really well. It's way faster than other compressors.

The air compressor is run by replacing the aircon belt idler pulley with a custom made pulley which has both serpentine and V drive.

The tyre compressor then has its own tensionong system.

Cobrasorry to grave dig this thread but i would like to see some pictures of this setup if possible

[haydofly]

Hi,
I went to the wreckers today and found an a/c compressor that looked easy enough to fit next to my air con. one. Its a bit smaller so I pulled it apart to see how it works.
I found that its a vane compressor, five vanes with two compression cambers.
(will try and remember to take some pics).

Do you think it will work okay as an air compressor?
It would need oil circulating for sure.

[abaddonxi]

This is probably a stupid question.

Can you get an alternator, like those used on 4BD1s, that has the vacuum pump on the back and turn it into an air pump?

Simon

[rick130]

This is probably a stupid question.

Can you get an alternator, like those used on 4BD1s, that has the vacuum pump on the back and turn it into an air pump?

Simon

I don't really know but a single stage vacuum pump really only pumps about 10-13psi absolute, so what would happen if you tried to increase the output pressure ?
Also I'm guessing the volume wouldn't be great either :confused:

[Bush65]

Hi Diff

I've had this system on my '95 Disco 300 TDI for the last five years and it works really well. It's way faster than other compressors.

The air compressor is run by replacing the aircon belt idler pulley with a custom made pulley which has both serpentine and V drive.

The tyre compressor then has its own tensionong system.

Cobra
I'm very surprised this works, unless it different to how I imagine from the description.

The problem I see is that the drive has to come from the belt that drives the aircon compressor and is transferred to the air compressor drive belt via the idler pulley. Now it is the flat, not multi-vee, side of the aircon drive belt that runs on the idler pulley. Also the wrap angle on the idler pulley is quite small. So I believe the aircon drive belt would slip on the idler pulley and not transfer sufficient torque to drive the air compressor.

Below are some pics I found somewhere, showing an air compressor mounted alongside the aircon compressor.

[slug_burner]

I'm very surprised this works, unless it different to how I imagine from the description.

The problem I see is that the drive has to come from the belt that drives the aircon compressor and is transferred to the air compressor drive belt via the idler pulley. Now it is the flat, not multi-vee, side of the aircon drive belt that runs on the idler pulley. Also the wrap angle on the idler pulley is quite small. So I believe the aircon drive belt would slip on the idler pulley and not transfer sufficient torque to drive the air compressor.

Below are some pics I found somewhere, showing an air compressor mounted alongside the aircon compressor.

This set up significantly reduces the amount of belt that is in contact with the A/C. I guess it works?

[EchiDna]

this page has other info you might find useful:
York Compressor for On-Board Air (http://www.jedi.com/obiwan/jeep/yorkair.html)

[Bush65]

This set up significantly reduces the amount of belt that is in contact with the A/C. I guess it works?
Yes it does.

I have no idea how it performs - those were just some pics I found in a post somewhere.

I saved them when I had a 300Tdi in my rangie - now replaced with a bigger rubber band.

I would look at modifying that arrangement to improve the belt wrap if I was to fit an air compressor to a 300Tdi.

[Bush65]

this page has other info you might find useful:
York Compressor for On-Board Air (http://www.jedi.com/obiwan/jeep/yorkair.html)
Yorks are the pic of the compressors for onboard air IMHO. But I think it would be a challenge to mount one on a 300Tdi.

[Madana]

Currently got a second compressor setup under the bonnet of my 300TDI. Just about at the stage to fire it all up