viscous fan isn't working

[Overland Tonka]

Available in australia, made in china?

Nev, what's your opinion on the rad?

[NiftyNev]

Most on eBay are Chinese. An Aussie made one woul probably cost four of five times those. Don't like alloy period, but would never buy a Chinese one. No personal experience, I just use copper brass. Have seen a couple of cheap alloy ones others have bought, that leaked quite early.

Nev.

[Overland Tonka]

Most on eBay are Chinese. An Aussie made one woul probably cost four of five times those. Don't like alloy period, but would never buy a Chinese one. No personal experience, I just use copper brass. Have seen a couple of cheap alloy ones others have bought, that leaked quite early.

Nev.

Ah.....thanks for the heads up Nev. I'm not risking another R/T one as mine leaked just after one year.. Off to Toyota dealers I guess. I did speak to a rad company who would make a bigger core one..again not cheap, but may give it another go.

[shokenore]

Sod it, I'm bolting it solid, atleast I know it's working then.

If you want I will have a look at it for you Luke.
I am going to do mine again, but will be using the 10000cst fluid this time.

Bolting it up solid is a answer, but as your truck is primarily used for off roading just be careful with the water crossings.
A solid bolted fan could have its blades dragged into the back of the radiator fins.....

[MWS]

If you want I will have a look at it for you Luke.
I am going to do mine again, but will be using the 10000cst fluid this time.

Bolting it up solid is a answer, but as your truck is primarily used for off roading just be careful with the water crossings.
A solid bolted fan could have its blades dragged into the back of the radiator fins.....

Does bolting it up solid require drilling into the unit and passing nuts and bolts through ? Is there any chance that it could put the fan out of balance ? That's why I asked about filling it with silicon sealant and allowing it to set. Any thoughts on that ?

[shokenore]

Hi Mick
Personally I wouldn't.
The reasons being like you said, if the unit is out of balance how much extra stress would that put on everything?
It would no doubt increases fuel consumption.
I think a better option would be to re oil the original or failing that having a search online or even down the local scrap yard for a radiator fan blade that will fit on the boss and use that instead of the viscous fan.
Obviously this is just my take on it and others will have their ideas.

I like the idea of a viscous fan, even when it is "off" it is still pulling air through the rad, at high road speeds it is sort of free wheeling and if it still has oil in it only locking up at low speed/idling and when it senses high air temps.

[muddle]

Thinking of it, oiling it probably is a good idea and bolting should be a last resort as its irreversible.