Rb25 Viscous Fan Problems

[GT500_Racer]

Hey guys doing some maintenance over the weekend since i picked up my first skyline and couldnt help noticed how loud the fan was, it seems it roars too loud, loud enough not to hear the engine... its worse when standing outside, u cant even hear the engine or exhaust, embarrassing lol

I was told that its possible the viscous fan is stuffed, so i ask on your opinion here

Now im aware they are suppose to be loud but only on start up when the viscous fan fluids are cold, but mine seems to be stuck on all the time, which makes me wonder is the viscous fan stuffed?

I have some understanding of viscous fans, but ive always had electric fans on my other vehicles, so this mechanical fan is some what new to me haha

cheers

[Missileman]

go buy a new genuine fan from nissan, the viscus unit that the plastic bit bolts to

Edited May 10, 2015 by Missileman

[Ben C34]

Replace it. It is stuffed.

Genuine is best.

[GT500_Racer]

cheers guys for the quick response, much appreciate it

[Got a Pulsar]

With the engine not running you should be able to spin the fan easily by hand, if not she's goosed.

Having said that, the clutch fan on my R31 was a little stiff and noisey but a spray in there with Silicon spray or WD40 (can't recall which I used) actually freed it up alot and quietened it down too.

Worth a shot and can't make it any worse.

[iruvyouskyrine]

$173 for a fan hub seems a bit steep though, but I have the same problem, the fan absolutely roars even at low rpm

[scotty nm35]

Did you try Amayama or just the Nissan counter? The UAE site is usually around half the price of Nissan Aus for some reason, although shipping can sometimes blow the cost out.

[iruvyouskyrine]

Yep using amayama.

[Missileman]

or find a working one from a wreckers

Edited May 10, 2015 by Missileman

[scotty nm35]

So Nissan Aus would want $400 odd for it?

There could be a market for refurbishing the old ones at that rate.

[niZmO_Man]

I thought some of the hubs (can't remember which ones) were sealed/non-serviceable.

Just buy a second hand one. I threw an RB20 one on my RB30 when that seized up (no more sounding like an E-series Falcon).

[iruvyouskyrine]

Most of the time you don't know if a second hand one works or not. I have had 3 different ones and none work properly.

[niZmO_Man]

Pretty easy to test.