Thread: Viscous Fan Clutch

I'd go with Roverlord, I have bought a heap of stuff off Mario & Heather and never had a problem. I wouldn't worry about the paint, if you really need it on there, I'm sure Mario can put a bit of paint on it :-)

Don't buy it on ebay, contact them by pm on here as AULRO members get a better price

Thanx Neale, Ill PM Mario and see what he can do.

Dave

The one in mine works fine except for at idle..... I don't trust them 'cos the factory temp gauge in the range rover classics at least do not give a true indication of the engines temperature. at 800rpm idling you could hear the fan not running in mine... though as soon as you slightly revved the engine it would roar to life.

I'm converting to electric fans.... If that sucks I guess I'll be fitting a new fan clutch and refitting the existing fan

seeya,
Shane L.

Hey Shane, Ive got a ENGINE GUARDIAN and have been seeing a slight increase in engine temp so did some work on my Viscous Clutch and it fixed it for a while.

I was going to try the electric fan route but figured that the standard system has worked OK till now so will try to get it up to scratch again. Ive replaced the thermostat.

Ive been in touch with Mario from Roverloard and will be ordering a new clutch.

Thanx
Dave

I replaced the mechanical fan with twin EL Falcon thermo fans and a Delta Current Controller (pulse width) kit with dash mounted temp dial. This allows me to dial in the temp I want to set the engine to run at, the fans ramp up and down to maintain this temp. A small light on the dash goes from green (fans off) to yellow (fans on low) to red (fans on high). A lot of muscle cars in the US employ this system to control their cooling (lots of info on the Mustang forums).

The Falcon fans can be bought from any wreckers for around $100 and fit easily with a small trim of the plastic housing. They shift a lot of air and are very quiet even when on full. The controller can be purchased from Brian Baskin in the US at Welcome to Delta Current Control

Benefits of replacing the original mechanical fan are that it runs much quieter, releases a little more power and very slightly improves mileage (hardly noticeable). The engine running temp also remains very steady, even on very hot days.

Just my opinion, but I think going to electric fans is a great way to cook your motor. if they fail they just stop running. far less reliable than a clutch fan. if your battery goes, so do your fans. if a wire gets clipped, there goes your fans. bad relay't here goes your fans.

Especially with the bodge wiring jobs that some clowns do on the trucks.I feel like im going to catch on fire just looking at it.


The original design is a good one. if it wont keep your truck cool, its either worn out or you have other issues. Adding a complicated and less reliable E fan doesnt fix it, just makes it more complicated and less reliable

Originally Posted by moneypit_k5

Just my opinion, but I think going to electric fans is a great way to cook your motor. if they fail they just stop running. far less reliable than a clutch fan. if your battery goes, so do your fans. if a wire gets clipped, there goes your fans. bad relay't here goes your fans.

Especially with the bodge wiring jobs that some clowns do on the trucks.I feel like im going to catch on fire just looking at it.


The original design is a good one. if it wont keep your truck cool, its either worn out or you have other issues. Adding a complicated and less reliable E fan doesnt fix it, just makes it more complicated and less reliable

While I agree that a good condition original clutch fan works well and a new one makes a big difference - it did with mine, if you think wiring in some electric fans will make your car unreliable, you probably aren't doing it right...

On something like a Disco or RRC the wiring is already fragile, underrated and ready to let you down at a moments notice. Unless you are very bad with wiring in which case you shouldn't be touching it, electric fans are very reliable - if they weren't, why would they be used on virtually every new car made now? Most modern cars only run electric fans, no mechanical fans to be seen almost anywhere now and you don't see piles of cars lined up on the side of the road due to fan failures.

Electric motors are one of the most reliable mechanical devices known to man - our civilisation wouldn't exist if the electric motor was unreliable.

My 2 cents worth anyway.

I agree completely. My point was Its never the fan itself but the wiring/faulty componants that "joe home mechanic" thinks he is capable of wiring. I am in the 4x4 service industry, its appalligg how many trucks come thru my shop with an efan instaled to "solve" cooling problems, Always wired like a Cambodian spaceship.