Radiator + Twin Thermos = Still Getting Hot.

[Des]

Hey Hey,

 

I have twin 10 inch davies craig fans on my Paj and they just don't flow enough air to keep it cool for a low range flogging.

 

Q. Can i mount a 16 inch fan on the engine side closest to the top hose on the passengers side of the rad and another 16 inch fan on the grille side closer to the bottom hose on the drivers side ?

[Chillin]

 

Q. Can i mount a 16 inch fan on the engine side closest to the top hose on the passengers side of the rad and another 16 inch fan on the grille side closer to the bottom hose on the drivers side ?

 

 

As long as they both flow air in the same direction ie, front fan turns anti-clockwise and rear turns clockwise, Keeping the main airflow towards the engine bay so cool air is running through the radiator.

 

Are they running on a temp sensor or switch?

[parrot]

Does it have a radiator shroud? They make a big difference

[Des]

As long as they both flow air in the same direction ie, front fan turns anti-clockwise and rear turns clockwise, Keeping the main airflow towards the engine bay so cool air is running through the radiator.

 

Are they running on a temp sensor or switch?

 

 

Does it have a radiator shroud? They make a big difference

Switch and it has no shroud just the fans up against the core with a bracket.

 

Wiring is now thicker and neater but it made no difference.

[Des]

I am on the hunt for a shroud for the viscous coupling but its proving fruitless. I may make one pending skillz and motivation.

[corollaart]

I guess your talking pajero,i had a mate with one that got hot all the time .He took it back to the dealer (some years after warranty ran out)and was told that they had problems with that model.

Replaced temp guauge,themostat,and radiator free of charge :o seemed to fix it,not sure what the problem was though.

It was one of the first models with the big dakar front guards not sure what year.

Mite be worth a check of there recalls.

[Des]

I guess your talking pajero,i had a mate with one that got hot all the time .He took it back to the dealer (some years after warranty ran out)and was told that they had problems with that model.

Replaced temp guauge,themostat,and radiator free of charge :o seemed to fix it,not sure what the problem was though.

It was one of the first models with the big dakar front guards not sure what year.

Mite be worth a check of there recalls.

I have an after market gauge, new thermostat and new radiator.

 

and yes Pajero. :)

[springersrolla]

i read an article years ago on the benefits of cooling systems, they reckon the last thing needed was a thermofan?

 

 

if youve eliminated the problems of sensors, thermostat and radiator, hows the water pump? i know the article mentioned surrounding the radiator in foam to prevent any air bypassing the radiator, and forcing it to run threw it

 

other point would be where can the heat escape? if your drawing air from front end threw the radiator, it can only travel under the firewall and floorpan to escape to reduce heat. maybe suitable bonnet vents may help reduce under bonnet temp??

 

at what point its it its hottest? idle, low speed or all the time?

[Des]

i read an article years ago on the benefits of cooling systems, they reckon the last thing needed was a thermofan?

 

 

if youve eliminated the problems of sensors, thermostat and radiator, hows the water pump? i know the article mentioned surrounding the radiator in foam to prevent any air bypassing the radiator, and forcing it to run threw it

 

other point would be where can the heat escape? if your drawing air from front end threw the radiator, it can only travel under the firewall and floorpan to escape to reduce heat. maybe suitable bonnet vents may help reduce under bonnet temp??

 

at what point its it its hottest? idle, low speed or all the time?

In 4L rock crawling, say 3000rpm and a walking pace.

[DJM1989]

If you are going to put new fans on it try twin au thermos. 3000 cfm ftw.

[Des]

If you are going to put new fans on it try twin au thermos. 3000 cfm ftw.

They don't fit, all ready have a set and they are too wide.

[SLO-030]

Try install some bonnet vents or raise the rear of the bonnet. You can cram as much air in as you want, but if its got nowhere to go, then your efforts are going to waste.

[Trev]

Overdrive the water pump.

[towe001]

The water pump could be cavitating.

 

http://autospeed.com/A_110478/cms/article.html

 

Could look at the triton ute (MJ ?) from about the same year for parts for the shroud etc.

 

Also want to be careful on the head as well cause their known for cracking. An old mate had the 2.6 triton and he went through about 3 heads with them cracking.

[altezzaclub]

Fit a header tank to it- when I was at Uni I worked for an engineering shop part-time, and we built a beach buggy from galv pipe. The boss sketched it out on the concrete fllor in chalk & we had to build it.. :laff:

 

We had overheating problems crawling up sand dunes so he made a closed aluminium tube 150mm diam that sat across the motor and the water went from the head, to the tank, then to the radiator. The extra 4litres gave all the water time to cool before it went through the motor again.