4.2 TDi Overheating

[GeeYou8]

Its a hot topic !

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All the cool kids are discussing air conditioners
Graham

[threedogs]

I think Eric is on the right track, instead of buying big $$$ items
just make what you have work as efficiently as you can.

[gf0012-aust]

Yeah i got one of those too coming soon. But i will do the fan first before i do the yota oil just to see what difference it makes. I wondering how the G35 hub would go too.

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I started a thread last year on work I'd been doing with the G35 (and the C34 which has a slightly less aggressive pitch but is a far easier fit due to different offset ring placement)

http://www.patrol4x4.com/forum/engin...n-mods-302049/

the fundamental problem is about air flow, and that can be confused with issues about absolute CFM, which actually has a point of diminishing returns. ie absolute high CFM will get to a point where it becomes detrimental rather than beneficial

not sure if its been flagged, but the toyo fan is 20mm larger in diameter than the std nissan fan, so there is the potential for shroud strike if you have any non standard items (rad, shroud, body lift etc...)

[Wizard52]

Is that the pwr radiator you have Mat? That something else i was thinknig about a while ago too. would a thicker two core be better than a 3core...

Have you heard much about Aussie Desert coolers? They are only around the corner from me.

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I put Aussie Desert Cooler in ute before recent trip across the middle to west coast and up to NT and at same time a VDO temp gauge. Not towing but right on GVM all the time.
Temps usually sat on 80 to 85 and rarely got over 90 although going up the 5 rivers lookout at Wyndham it went to 110 and factory gauge did not move from normal.
All alloy and no plastic top tank to split at worst possible time.
So glad I changed radiator before trip as one less thing to worry about breaking.

[Bushy674]

Hi there! Been away from this site for a while, and have since updated from a TD GQ to a TD GU, not a bad rig but old mate severely understated the overheating issue, the engine is fine, no evidence of cracked head/liner etc. fitted an aftermarket gauge and was surprised to find the Nissan gauge got to its operating temp spot on the gauge at 60degrees and didn't move til nearly 100degrees. Fitted a desert cooler Radiator with very little effect, turned my attention to airflow, removed spotties and fitted an 8 blade GQ fan with a locked hub, And Bugger me, pulled up a big hill in 35 degree ambient for a high of 86degrees coolant temp. As I was on a timetable and heading away for Christmas towing a camper I locked my GU hub nicely and refitted GU fan, guess what? Same hill, same ambient temp and 96 degrees on gauge WTF! Bit more research and apparently the GQ 8 blade straight fan pulls twice as much air as the seven blade GU fan🙄, so for the moment I banged on the locked up GQ fan and towed a ridiculously over loaded camper down to Busso only ever reaching 86 degrees, phew, cheers for reading, will update as I find out more👍🏻

[Stropp]

I have recently fitted the Ufi fan and hub, so far it seems the factory gauge is sitting slightly lower than previously as I don't have an aftermarket temp gauge and very little extra noise. This is with stock cooling system so a bit of beach work on a hot day will soon test it out.

[Bushy674]

I was very pleased I put an aftermarket coolant temp gauge on my rig, the factory gauge is stationary for at least a 35+ degree temperature variance and it hits its normal mark at 60degrees. The boys at united told me the UFI fan and hub will not fit with the desert cooler Radiator so I am keen to see if I can mod a GQ fan and hub set up to pull sufficient air👍🏻

[Stropp]

I was very pleased I put an aftermarket coolant temp gauge on my rig, the factory gauge is stationary for at least a 35+ degree temperature variance and it hits its normal mark at 60degrees. The boys at united told me the UFI fan and hub will not fit with the desert cooler Radiator so I am keen to see if I can mod a GQ fan and hub set up to pull sufficient air👍🏻

Check with mudrunner he fitted a y62 fan blade to his gu, not sure it will fit the Gq but he says it looks very similar to the Ufi fan

[Bushy674]

Cheers Stropp! Will look into it👍🏻

[JohnCam]

Mine never got hot unless I was towing, regardless of how I was driving it after the mods. Hang a 3.2T van on the back and it got pretty hot going up big hills at speed, and I mean proper big long hills. From here I put in new fluid, hoses, thermostat (standard one), UFI fan and hub and a 3 core copper/brass Rapid Cool radiator, problem solved. Going up the same hills that saw temps skyrocket and me backing off, I can now stay in it.

Hi Rocket

I do more reading than posting so I hope I am able to reply to an old post.
Mine too also gets hot when pulling van up long hills.
I have a few more ponies than stock and have fitted UFI fan.
Although it has helped, it hasn't solved it.
I've been led to believe an after market radiator will not fit with UFI fan.
Could you provide any specifics on radiator fitted to yours please?
Thanks.
Johnny.