Electric fans

[JohnR2]

What are people's experiences with electric fan types? I understand straight blades are more efficient but noisier? Am I likely to notice the difference in noise with a not too silenced V8? I'm thinking a 14" fan, making my own brackets or a combination shroud/bracket. I'm undecided about the shroud idea as although I'm sure it makes the fan more efficient when running, the rest of the time it's partially blocking the rad?

[Wittsend]

Doesn't matter in a Land Rover, I doubt your ears are sensitive enough to notice the difference - a bat might.

Try and fit the biggest fan that will "fit".
Best is behind the rad with the mechanical fan removed.
Fasten with cable ties and rubber buffer blocks to protect the rad fins.
Forget a shroud.

At the same time buy a thermostatic control relay. There are some good ones, and fans on eBay.

 

[JohnR2]

The V8 will preclude fitting it

Doesn't matter in a Land Rover, I doubt your ears are sensitive enough to notice the difference - a bat might.

Try and fit the biggest fan that will "fit".
Best is behind the rad with the mechanical fan removed.
Fasten with cable ties and rubber buffer blocks to protect the rad fins.
Forget a shroud.

At the same time buy a thermostatic control relay. There are some good ones, and fans on eBay.

 

The V8 will preclude fitting it behind the rad, I used the plastic ties on my Cobra fan but I have heard they can stretch allowing the fan to damage the rad?

[Rangieman]

I've had a 3.5 in my Series 2 for over 20 years and have never had an overheating issue.
I have a standard Series 3 radiator, with an 88°C thermostat and an electric fan from a Citroen BX diesel, mounted in front of the rad.
My engine is fitted with the thermostat housing off a 3.9 Range Rover fitted with A/C so it has an OE temp switch screwed into it, to control the fan via a relay.
I have fitted a few V8's in different Series models over the years and this cooling system has always worked reliably.
The coolant I always run is the G12 used throughout all VW/Audi cars (the pink coloured stuff). In my experience it transfers heat far better than old school antifreeze/water mix. I hope this is of some help.
The fan does make some noise but only kicks in when sitting in traffic. It rarely kicks in once the Landy is moving above jogging pace.

[Wittsend]

OK

Put the fan in front of the rad. This is what I have currently on the Panda Camper.
Cable tied in place. Just make sure you wire up the fan to blow air through the rad.
Works just as well that way round.


 

[JohnR2]

I've had a 3.5 in my Series 2 for over 20 years and have never had an overheating issue.
I have a standard Series 3 radiator, with an 88°C thermostat and an electric fan from a Citroen BX diesel, mounted in front of the rad.
My engine is fitted with the thermostat housing off a 3.9 Range Rover fitted with A/C so it has an OE temp switch screwed into it, to control the fan via a relay.
I have fitted a few V8's in different Series models over the years and this cooling system has always worked reliably.
The coolant I always run is the G12 used throughout all VW/Audi cars (the pink coloured stuff). In my experience it transfers heat far better than old school antifreeze/water mix. I hope this is of some help.
The fan does make some noise but only kicks in when sitting in traffic. It rarely kicks in once the Landy is moving above jogging pace.

how did you deal with a 36mm thermostat cover outlet on the V8 to @ 30mm series radiator tophose?

[Alan Drover]

My ancient Kenlowe is in front of the radiator on its brackets.
The engine is a 2.5 petrol and the fan rarely comes in. Last time was in slow moving traffic for Newbury. It has a probe in the top hose with a rubber seal. When the antifreeze and hoses were changed recently a far superior neoprene seal was used thanks to information from this forum.

[Rangieman]

Regarding hose size difference I used RR sized hose and squished it onto the rad as it had a better flange to seal against.