Intercooler

Engine issues go here.
gunipinzmutt
Italy
Posts: 60
Joined: Wed Nov 08, 2006 1:40 am
Location: Italy

Re: Intercooler

Post by gunipinzmutt »

Any follow up to this interesting thread?
I understand the main problem is reaching the front of the vehicle with two big pipes. I've installed a Volvo TD intercooler engine on a P80 718 and I'm working on a water to air intercooler. Does anybody have experience in this solution?
Thanks
Pinz: 710 m, 710 ms, 710 k, 712 m fla, 712 k, 716 m, 718 m san, 716 k, 718 rehinbraun
Haflinger: 700, 703
G: 250, 270, 400, 350
Unimog 406
M825, M151 A2, M416
Fiat Panda 141A 4x4
Fresia F18
Profpinz
Australia
Posts: 1056
Joined: Sat Apr 17, 2004 7:08 pm
Location: Melbourne, AUSTRALIA
Contact:

Re: Intercooler

Post by Profpinz »

The floor pan on a late model 718 (P93+) has been modified to fit the intercooler pipes and the pipes themselves look like they have been used to beat someone over the head (specific dished in shapes/indentations etc everywhere to fit around various bits and pieces), so fitting a unit to an earlier model would be a bit of a task.
Peter

1974, 712 6X6 Pinzgauer
1983, 710-1.6 4X4 Pinzgauer
1997, 718 6X6 Pinzgauer (in pieces)
1971, 700 Haflinger
1974, 703 LWB Haflinger
2001, Range Rover

http://www.ozpinz.com
gunipinzmutt
Italy
Posts: 60
Joined: Wed Nov 08, 2006 1:40 am
Location: Italy

Re: Intercooler

Post by gunipinzmutt »

That's why I'm working on a water/air intercooler. Water hoses are thin and flexible! My idea is to put a water radiator with own fan somewere else, for instance in a modified tool box.
Pinz: 710 m, 710 ms, 710 k, 712 m fla, 712 k, 716 m, 718 m san, 716 k, 718 rehinbraun
Haflinger: 700, 703
G: 250, 270, 400, 350
Unimog 406
M825, M151 A2, M416
Fiat Panda 141A 4x4
Fresia F18
User avatar
David Dunn
United States of America
Posts: 2274
Joined: Wed Apr 14, 2004 7:08 pm
Location: Arcadia, CA

Re: Intercooler

Post by David Dunn »

Back in '02, I had talked to ATL, and they had a program to return P80s and P90s to them and they would upgrade the truck to a P93.
They had told me the P93 had integrated ducts into the sheetmetal for the intercooler.

Also, I saw some pics where the US army P80 718s had been upgraded to P90 radiators.. the cooler fin area was as large as the entire original P80 radiator.
The body had been cutout for the rerouted hoses
.
The Trojan Horse... the 1st Pinz used to covertly carry troops into battle .




ATL Pinzgauer XM 718K TUM(HD) 6x6 FFR (aka The Green Grail)
gunipinzmutt
Italy
Posts: 60
Joined: Wed Nov 08, 2006 1:40 am
Location: Italy

Re: Intercooler

Post by gunipinzmutt »

You undestand, Dave, that this solution could be valid only for Armies, not for single enthusiasts. Try to immagine the cost of shipping the vehicle round trip, cutout and modify the floor pan, not to mention the one of parts needed that notoriously are not cheap at all.
I go back to the point: air to water intercooler. It solves all main problems and promises lot of money saving.
Anybody has experience on it?
Pinz: 710 m, 710 ms, 710 k, 712 m fla, 712 k, 716 m, 718 m san, 716 k, 718 rehinbraun
Haflinger: 700, 703
G: 250, 270, 400, 350
Unimog 406
M825, M151 A2, M416
Fiat Panda 141A 4x4
Fresia F18
Tads
Posts: 44
Joined: Thu Feb 23, 2006 1:02 pm
Location: Telford, UK

Re: Intercooler

Post by Tads »

While not a sanctioned production improvement, we did look at air to water charge cooling for the 5 cylinder Pinzgauer at Guildford. This was primarily to reduce the backpressure caused by the existing air to air cooler which has a fairly tortuous routing and for boring engineering reasons like reducing cost/manufacturing time. We only took it as far as rigging up a separate cooling circuit on the back of a Pinzgauer flatbed using a standard electric recirc pump to move the coolant around but it certainly improved turbo pickup and reduced exhaust gas temperatures over the standard arrangement. Of course being test engineers we used the extra cooling capacity to turn up the fuelling rather than improve turbo life etc. which made it quite a sprightly vehicle!

Tom
gunipinzmutt
Italy
Posts: 60
Joined: Wed Nov 08, 2006 1:40 am
Location: Italy

Re: Intercooler

Post by gunipinzmutt »

On the application I'm working on, the changer is very close both to turbo and intake manifold so no tortuous and long piping and no backpressure. Tom, did you use an electric fan for the water radiator?
Pinz: 710 m, 710 ms, 710 k, 712 m fla, 712 k, 716 m, 718 m san, 716 k, 718 rehinbraun
Haflinger: 700, 703
G: 250, 270, 400, 350
Unimog 406
M825, M151 A2, M416
Fiat Panda 141A 4x4
Fresia F18
Tads
Posts: 44
Joined: Thu Feb 23, 2006 1:02 pm
Location: Telford, UK

Re: Intercooler

Post by Tads »

Yes, it was hack together using parts we had left over from another project. We used a small electric fan/radiator normally used as a hydraulic oil cooler which seemed to work fine for our initial investigations. We mounted the charge cooler right below the turbo on the front body support bracket so the air hoses were extremely short on our installation, the water pipes then ran back along the chassis tube to behind the cab and up on to the loadbed - this was just because it made tweaking/instrumentation easy to do.
User avatar
fesm_ndt
Posts: 252
Joined: Fri Jan 02, 2009 8:18 am
Location: Australia

Re: Intercooler

Post by fesm_ndt »

I modded my P90 to P93 spec. It is doable.

To factory spec is a bit of work but could also be done cheaper. The bits different are:

- inner 3 inches of the floor are curved in
- RHD need a different accelerator shaft (not sure about LHD)
- the front frame is longer by about an inch and there is cutouts in the front section for the intercooler connections
- lower radiator mounts are shorter
- upper radiator mounts are shorter with upper mount for intercooler
- lower intercooler mount
- the radiator cowl need trimming back (very easy) with all the rubber refitting
- lower nose mounts (better idea than the P90 as they push in and can be pinned)
- thread the inlet housing

All of the above is fairly easy.

The P93 has a different cam, injection pump and injectors. However it sounds like most the mechanical bits were done to reduce polution further
Regards

Mike
(Project Gimpy 2)
Heckelbone
Posts: 3
Joined: Sat Oct 20, 2012 10:26 am

Re: Intercooler

Post by Heckelbone »

Hi Guys, after my engine popped and rebuilding it, I am adding a liquid air intercooler.
I am about to start fitting it. I did mount the radiator for it on the rear hoop on locking hinges. This way when it's warm and the top is rolled up, I can point the fan out the side. In the cold, when the top is down, I can turn the radiator to heat the back end of the truck.
Progress on the rebuild with photos is at D24T.com : http://d24t.com/showthread.php?t=930&page=5
Profpinz
Australia
Posts: 1056
Joined: Sat Apr 17, 2004 7:08 pm
Location: Melbourne, AUSTRALIA
Contact:

Re: Intercooler

Post by Profpinz »

Nice job on the motor.....I particularly like that new head.

Mine is still sitting on the workshop bench....I have had a quick look at it and all seems Ok but I'II know for sure after I get it crack tested etc. Who knows, maybe I'II be looking for a new one too :roll:

BTW,Why did you change to the new plenum?
Peter

1974, 712 6X6 Pinzgauer
1983, 710-1.6 4X4 Pinzgauer
1997, 718 6X6 Pinzgauer (in pieces)
1971, 700 Haflinger
1974, 703 LWB Haflinger
2001, Range Rover

http://www.ozpinz.com
Post Reply