Ally Radiators & Thermo Fans - Cooling System

[OlTroll]

Hi Guys n gals,

my TD42 silver top non-turbo is laid up and I am looking at radiator and thermo fan setups.

Does anyone have an opinion on what they reckon is the best setup for keeping the clunker cool?

I did just install a cheap eBay radiator and twin thermo fan setup which worked well until one of the fans came off its shaft, while the other vibrated the whole car body via the radiator.

YYCool were good about it and gave me a full refund.

Should I refit the original setup with clutch fan and shroud, only needing a new fan clutch?

Should I get one of these aftermarket radiators and if so which fans to use and how to mount them, and how to setup thermo fan controller???

Tearing my hair out, please help....

OLTROLL

[threedogs]

I would stick as close to OE as possible Winnie just fitted a HD radiator to his 4.2 and seems very happy with it.
I'd buy a new HD radiator and reco your clutch /thermo fan and go from there ,check your OE plastic fan as it could be cracked and brittle

[OlTroll]

Thanks threedogs, more though please guys, need to weigh up my options

[macca]

Are those electric fans noisy?
Been thinking of putting electrics on, 1 or 2, and get a aluminium shroud custom made to get the best air flow.
I have an aluminium rad try to control water temps but still gets a bit warm for my liking.
Thinking manual over-ride the thermal control when needed and cutting power for water and mud stuff.

[NissanGQ4.2]

Are those electric fans noisy?

I wouldn't say its noisy probable quieter then the original viscous fan in mine

[Dales300exc]

I wouldn't say its noisy probable quieter then the original clutch fan in mine

Cause its drawing less air haha.

I vote clutch fan.

[NissanGQ4.2]

Cause its drawing less air haha.

I vote clutch fan.

Yep supposedly thermos draw less air ( not that I have ever seen any comparisons ) but if it is set up correctly ( which most aren't ) it will still do what a viscous fan does but have more benifets

[Dales300exc]

Ohh thermos with a good shroud will work just fine. Where 99% of people go wrong is slap cheap thermos on with no shrouding and expect results.

But the way I see it, if it aint broke, why try fix it.

Engine fans are proven. Less susceptible to water/mud and when in good working order work brilliant.

[nissannewby]

Also what a lot of people don't realize is the air is drawn through the radiator by pressure differential. Any fan engine or electric cannot compete airflow wise once the vehicle surpasses about 20km/h.

Things to keep in mind, are the rubber guards in place between guard and chassis, is the small bash plate/ splash guard on place and in good condition. If you have a look at fan shrouding on a gu it actually doesn't shroud the whole radiator.

Start with a quality radiator be it genuine or aftermarket, service your cooling system (flush, thermostat, fan, viscous hub etc).

Some good reading here.

http://www.patrol4x4.com/forum/engin...results-78338/

http://www.patrol4x4.com/forum/nissa...ot-td42-62472/

[NissanGQ4.2]

Ohh thermos with a good shroud will work just fine. Where 99% of people go wrong is slap cheap thermos on with no shrouding and expect results.

Very True, mine is not set up correctly I done my best modding the original shroud but really need to redo it. Considering I have a blocked radiator core and not the best shroud they do a relative good job keeping it cool

But the way I see it, if it aint broke, why try fix it.

Agree, but when it does break why not change it 2 something better

Engine fans are proven. Less susceptible to water/mud and when in good working order work brilliant.

Hence why most car manufactures have already moved over 2 electric fans *L*