Boiling Diesel engine

[Peter Connan]

Heinrich, the air con increases the temperature going into the radiator by several degrees, which makes the radiator's job so much harder. I know one member here with a 4.2 TDI eventually resorted to mounting the air-con condesor under the car somewhere.

However, in your car there should be a system that switches off the air-con as soon as high water temperatures are recorded, and perhaps this needs to be checked out?

However, I do agree that the main cause is in all probability either a water circulation issue or a problem with the viscous coupling.

[ChristoSlang]

I know the temp sensor on a 4.2 diesel's radiator cuts the aircon off at 118 deg C.

YMMV on the 3.0...

[thabogrobler]

Nee, nog nie spyt oor die Patrol nie.

Eendag as my skippie kom.... een van hierdie mooi dae!!!! Wit 4.8 GRX!!!

Ek het gister iemand ontmoet wat elektriese fans verskaf vir die militere voertuie wat jou Viscous fan kan vervang - die dink skuif 8 keer MEER lug as 'n viscous!!!

Baie impressive! Beste ding is, dit gaan my goedkoper uitwerk om daai fan op te sit as 'n standaard viscous(op my Hilux)!

Die dink het 'n rekenaartjie wat jy met jou laptop kan programeer, bv. met die opstart in die oggend suig die fan eers al die goggas uit die radiator en dan draai hy vinniger soos die enjin warm word.

Dan het voer hy ook daai sisteme in wat die olie vanself vervang - maar ek is seker jy ken dit?

[Traveler]

Back from holiday. And I visited Nissan; because places like Silverton Radiators are not open yet so basically no work had been done.

So myself and the workshop foreman sauntered over to Repulse to discuss the work to be done. Needless I was really not impressed at that time.

He asked me, how and where was it that the radiator cap is on the reservoir, and the reservoir cap is on the radiator.... My response, it has been like that since we have bought Repulse, and it was like that after the water pump was replaced at Edenvale Nissan (and they then replaced both the caps at that time). He showed me, the caps are swopped, therefore the flow between the radiator and the reservoir is restricted and off course the reservoir cannot contain pressure when there is.

So the two caps and the reservoir will be replaced (the right way around). We will test it with the loaded trailer and then see what is going on. They have seen a similar issue on a Navara, and after swopping the caps around the Navara has never misbehaved again.

I'll likely replace the radiator in due cou

[Peter Connan]

Heinrich, I sincerely hope that is the problem!

In my opinion, and particularly if the cooling system has been operated with anti-freeze and replaced as specified, then your radiator should last for many more years?

[Traveler]

Heinrich, I sincerely hope that is the problem!

In my opinion, and particularly if the cooling system has been operated with anti-freeze and replaced as specified, then your radiator should last for many more years?

Peter, I tend to agree with you. I have driven 2 Hilux's and 2 Isuzu's past 200,000km (the one Suzu went to 568,000km) and never needed to replace a radiator. And my 250KB I drove around in Zambia for work; it got plenty muddy.

This waterless product is the one I'd like to get my hands on. It does not contain water like normal coolant.
http://www.evanscoolants.com/evans_wate ... lants.html
Because it only boils at more than 180DegC it almost completely removes pressure from the cooling system.
Available in South Africa as well: http://www.iol.co.za/motoring/no-steami ... -1.1410938
I'll call in the coming week.

[Peter Connan]

Very interesting.

I wonder if we could arrange a group buy?

[Traveler]

It is a very interesting and good idea Peter.

Reading that document, Silverton Radiators also is serving as an agent.
Just think of the benefit of having lower pressure in the radiator, and none of the corrosive qualities of water.

[marakasmalan]

Hello Guys,

Following this discussion I really hope the swopped caps turns out to be the problem!

Also remember, when buying antifreeze, it is always better to by the glycol ethylene based type. The normal/conventional antifreeze has got a shelf life of about a year after which it becomes ineffective. Funnily enough, the most affordable place I found the G-E based type is at volkswagen dealers. It may also be that the G-E based type is specified for the GU patrols, as it is essential when aluminium alloys are involved in the cooling system.

Furthermore, can somebody advise: AFAIK gasflow and porting is far less effective nowadays, in the past when manufacturing techniques concerning the casting of manifolds and blocks were not as good as they are today, it made a huge difference to smoothen the conduits to minimize resistance for gasflow and to ensure ports line up 100%, also eliminating further flow resistance. With modern manufacturing techniques, these issues has been mostly adressed?

Regards

[Kagiso II]

I only see teh AD and th eclaims .. is there any other way of confirming this claim? Also wondering WHAT does waterless mean if the product still is a liquid ??