Mud-club
Vehicle & Technical => Range Rover => Topic started by: generation-x on August 17, 2010, 10:31:18
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lookin to bin the viscus fan on my 3.9 rrc would a 13 inch leci fan be enuf to keep her cool? Fan would be infront of the rad to push cold air throu? Simon
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Anyone??? [-o<
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has it got aircon
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no buddy just need's to keep the engine cool :) simon
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if it had aircon you could use them fans
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15" single or twin smaller ones..? MM4x4 offer a 15" for V8's but 'not recommended for heavy off road use'
http://www.mm-4x4.com/15-inch-electric-fan-kit---all-land-rovers-4-cyl--v8-688-p.asp
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cheers guys looks like try to tat yard then for pair of pug205 fans :-) thanx simon
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Ducato van has a big fan.
BUT, I rang Kenlowe and spoke to their applications engineer. He advised me NOT to swap the Viscous for electric. Aviscous fan will shift twice as much air as a pair of 12" HD fans (you can't fit 2 13" IIRC) but basically the biggest fans they sell that fit will not do the job as well as a sorted vsicous.
So I bought a new viscous and rad, my car has been sorted since, well cooling wise anyway.
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Ducato van has a big fan.
BUT, I rang Kenlowe and spoke to their applications engineer. He advised me NOT to swap the Viscous for electric. Aviscous fan will shift twice as much air as a pair of 12" HD fans (you can't fit 2 13" IIRC) but basically the biggest fans they sell that fit will not do the job as well as a sorted vsicous.
So I bought a new viscous and rad, my car has been sorted since, well cooling wise anyway.
RRB
ok :oops: viscus fan has been binned
main issue is the way the front end is now a standard viscus wont work as it hits the :oops: bonnet
got a pair of 13" leci fans on the front
only issue now is i cant find a 12volt feed
every feed i find goes to 14volts when engine is runnin
so im not sure wot im gonna do
Simon
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Any of the 14 volt feeds will be fine. Its becasuea car electrical sytem is 12v nominal and max 14.4v
The 14.4v is the alternator output, as batteries have to be charged at slightly above the rated voltage.
If you put a meter across the battery without the engine running it will read 12.4, with the engine running it should be between 14v and 14.4v
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Find an ignition live and relay a fused supply striaght from the battery, don't just connect them up to any +12V wire you find!
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Wire the fans straight onto the battery via a realy. The relay can be fed with either battery or ignition supply via your thermostat switch. When you turn off the engine parts of the cooling system get hotter, so you may find the fans come on once you switch off the engine, this is normal and will help prevent the oil from being over-heated in the heads and other such problems. The V8 runs best at around 65 degrees but for emissions regs the later onces run at 85 or higher. You don't want the engine getting any hotter than that.
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Many moons ago a friend with a 4203 perkins diesel in his series would have occasional cooling issues whilst winching. What he did was on a corner of the radiator he fitted a smaller faster fan from a Vauxhall Nova. Switching it on gave cooling results almost immediately. I think he kept that installed until it was sold.
Hopefully the two 13" fans you've fitted will do the job ;) The viscous unit on my V8 Defender is a tad old and whilst I've had issues I have found that carefully hosing out the radiator, oil cooler and a/c radiator too. Certainly helped :)