Electric fan instead of viscous fan???

squizzel said:

You also have to make shure the fan is turning the right way. some are designed to pull air some are designed to push air.
Mark

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I think that issue is quite simple to fix just swapping the polarity

The blades on the fan fitted to my dads are only designed to run one way, to get the fan to push air the fan has to be turned around. Its possible with that fan but it can cause some mounting problems with others, and some designs will run either way. Just pointing out to make shure the fan you have will move air in the way you want it to.
Mark

squizzel said:

The blades on the fan fitted to my dads are only designed to run one way, to get the fan to push air the fan has to be turned around. Its possible with that fan but it can cause some mounting problems with others, and some designs will run either way. Just pointing out to make shure the fan you have will move air in the way you want it to.
Mark

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Thanks mate..... i'll certainly do that

sierrafery said:

I think that issue is quite simple to fix just swapping the polarity

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No its not that easy matey although the fan will move air if you change the polarity of the motor it wont do it very efficiantly the fan blades (especially on modern fans) are desighned to move air in one direction

oldskool said:

No its not that easy matey although the fan will move air if you change the polarity of the motor it wont do it very efficiantly the fan blades (especially on modern fans) are desighned to move air in one direction

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Thanks buddy i didnt think to that.....i have an old one from a russian car in the garage which is doing the same thing both ways...total simmetry(not that i ever intended to put it on a Landy), anyway i'm thinkig to a kind of fixing to a transverse bar to be very easy to take it out and to put it back each ways......i'm still working on it.

ill be off down the scrappy next week to get a fan, im ordering an in line termostat off ebay to switch it and with a cut off on the dash for wading.

V8_Disco said:

ill be off down the scrappy next week to get a fan, im ordering an in line termostat off ebay to switch it and with a cut off on the dash for wading.

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Good for u....just dont forget the backup especially if it's scrap.......what ratty said or find at least an electric engine to fit......i'm trying to fit a russian 12Volt engine to a disco fan blade......if i'll succeed this kind of engines i can find for 10 quid(thereabout) a piece(by new) .......the "advantage" of eastern europe

I had decided to go for an electric fan a year or so ago, and after much reading, decided to get a " scrapper " fan and a thermo switch from X-ENG.

I rang and spoke to the chap at X-ENG, and after explaining to him my plan, he then told me that, if the viscous unit is working correctly on a TD5, then it doesnt use up much power at all. ( and certainly not the 10 odd % that some companys are claiming ).

I suppose the thing that would get me going, would be seeing a big difference in fuel consumption if I ran the truck without it for a " trail period ".

The fact is that viscous fan does a good job of keeping the Disco,s engine temp in check.

Del.

50 pence said:

I had decided to go for an electric fan a year or so ago, and after much reading, decided to get a " scrapper " fan and a thermo switch from X-ENG.

I rang and spoke to the chap at X-ENG, and after explaining to him my plan, he then told me that, if the viscous unit is working correctly on a TD5, then it doesnt use up much power at all. ( and certainly not the 10 odd % that some companys are claiming ).

I suppose the thing that would get me going, would be seeing a big difference in fuel consumption if I ran the truck without it for a " trail period ".

The fact is that viscous fan does a good job of keeping the Disco,s engine temp in check.

Del.

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thats only one reason people fit them

the others being a quieter running engine and when you go through mud/water it doesnt get thrown around the engine bay because a cut off switch can be wired in the cab

I have run 2 fans on my v8 now for about 6 months.

I bought the slimline ones off eBay, bout 50 quid each. I'm on my second set, the first ones were 25 quid each and didn't last.

Anyway, I got a fan switch for an aircon disco and fitted it to the oem position in the thermostat cover.

V8 disco, look at your thermostat housing top and you'll see a flat bit on the tube.

Drill this out and tap it m22x1.5 iirc and fit your oem fan switch in there.

They're about 15 quid from intermotor so cheaper than x-eng kit and a neater install.

Switch on the dash and she wades without drama.

Cheers

Mr Noisy said:

I have run 2 fans on my v8 now for about 6 months.

I bought the slimline ones off eBay, bout 50 quid each. I'm on my second set, the first ones were 25 quid each and didn't last.

Anyway, I got a fan switch for an aircon disco and fitted it to the oem position in the thermostat cover.

V8 disco, look at your thermostat housing top and you'll see a flat bit on the tube.

Drill this out and tap it m22x1.5 iirc and fit your oem fan switch in there.

They're about 15 quid from intermotor so cheaper than x-eng kit and a neater install.

Switch on the dash and she wades without drama.

Cheers

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have you got any pics this sounds like a plan

You will also need the correct temperature rated sensor/switch for your engine, that must be at least five degrees above your normal runing temperature according to Kenlow so your engine must get hotter than it normally would before the fan switches on.

A higher temp is a good idea for an all alloy V8 or not and why no electric fans fitted as standard by Land Rover on D3 & 4 RRS & RR and maybe the Freelander2

discool said:

You will also need the correct temperature rated sensor/switch for your engine, that must be at least five degrees above your normal runing temperature according to Kenlow so your engine must get hotter than it normally would before the fan switches on.

A higher temp is a good idea for an all alloy V8 or not and why no electric fans fitted as standard by Land Rover on D3 & 4 RRS & RR and maybe the Freelander2

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This is an interesting theory. My question back is why don't they used fixed engine fans rather than ones with viscous couplings. And maybe another, at what temp does the viscous unit engage the fan, is it at normal temp or above normal temp. If at normal temp, go back to my first question and why didn't they fit fixed fans.

Ive been driving around without the viscous fan on for a while and not had any problems.I filled up the other day and Im getting 27.5 mpg. Thats not bad for a 300 auto. I keep it locked in 3rd around town as I believe it gives me a better return. Also got rid of the big ugly bull bar that was tatty . Not sure if it made any difference but it certainly wasn,t helping.A guy give me £51 for it on ebay. Im going down Wales with the caravan so not sure if I should put it back on or just take it with me just in case. I think its had it anyway as it feels stiff even when cold.

I'd say chuck it in the boot in case of emergency but I doubt you'll have any problems.

on my 300 TDi I took off the the viscous fan and fitted an electric fan about 5 months ago. Rather than ha ving the leccy fan switched via a thermal switch it is just a dash switch. I have never yet used it apart from a weekly test

Yeah, intermotor do 2 different temps, i chose the cooler one iirc, safety first etc etc.

the reason electric fans are not fitted as a general rule is that they cost more and are less reliable. viscous fan is a far better option as long as your not deep wading or mud plugging - which i do mainly.

oh, and fixed fans make a hell of a racket all the time, viscous fan spends most of its time slipping so runs quiet.

v8disco- im gonna take some shots of the disco tomorrow anyway, so i'll try remember to take some of the thermo housing and my ingenious plan!

OR just try find a 3.5 or 3.9 with aircon and see what the thermo housing cover is like, im guessing its the same as what i have turned mine into, except i couldnt find a 3.5 with aircon and i dont know if 3.9 is the same, so i did what i did to be sure.

cheers anyway

Mr Noisy said:

Yeah, intermotor do 2 different temps, i chose the cooler one iirc, safety first etc etc.

the reason electric fans are not fitted as a general rule is that they cost more and are less reliable. viscous fan is a far better option as long as your not deep wading or mud plugging - which i do mainly.

oh, and fixed fans make a hell of a racket all the time, viscous fan spends most of its time slipping so runs quiet.

v8disco- im gonna take some shots of the disco tomorrow anyway, so i'll try remember to take some of the thermo housing and my ingenious plan!

OR just try find a 3.5 or 3.9 with aircon and see what the thermo housing cover is like, im guessing its the same as what i have turned mine into, except i couldnt find a 3.5 with aircon and i dont know if 3.9 is the same, so i did what i did to be sure.

cheers anyway

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Although not a Land Rover unless it's a Freelander most modern cars have an electric fan now. A fan at the rear of the rad is well shielded and as LR are still fitting them there are u saying that their design has always been wrong ?.

Why a viscous fan is always slipping, and therefore saving energy, (as it should) unless required is because of the ram efect of air passing through the rad when the vehicle is moving forward, it's only when there is little ram effect does the fan take over just like an electric fan would.

As u say the fan can be heard when it's cold for the first 100 yards or so it sounds like a turbine and also when in traffic on a very hot day especially if u have a/c fitted and that's running.. that will be for a v8 engine or course which is quite anyway.

discool said:

As u say the fan can be heard when it's cold for the first 100 yards or so it sounds like a turbine and also when in traffic on a very hot day especially if u have a/c fitted and that's running.. that will be for a v8 engine or course which is quite anyway.

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My fooker is locked solid at the moment. I can hear it all the time.

havent yu fixed that yet?