Daan Posted April 22, 2012 Share Posted April 22, 2012 Aye, mine is still off and I'm wondering if it's worth replacing it, maybe it keeps carp off the radiator ? BTW, I manged a cut finger and a bump on the head whilst putting the belts on, had on the latex gloves and saw this on removal !! I always switch off the engine before I do that. Daan Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted April 22, 2012 Share Posted April 22, 2012 I'm with snagger on this one. The viscous fan is there for a reason ! Mo Quote Link to comment Share on other sites More sharing options...
jbs Posted April 22, 2012 Share Posted April 22, 2012 You failed John, HFH with a diesel? Not going to happen Barry ah yes-Bugger my bad Quote Link to comment Share on other sites More sharing options...
elbekko Posted April 23, 2012 Share Posted April 23, 2012 Removing the fan on an engine that likes cooking itself more than a masochistic cannibal sounds like a pretty bad idea really. Just keep it on, it may buy you a little extra time before your temp gauge decides to shoot up. Quote Link to comment Share on other sites More sharing options...
ejparrott Posted April 23, 2012 Share Posted April 23, 2012 Hmm..as usual I seem to be bucking the trend. There's been no fan used on my TDi'd 88" for four or five years now. The engine fan can't be used as it fouls the bottom hose, and there once was an electric fan, never used, until it fell off its mounts and chewed a hole in the rad... I normally advise as a minimum fitting an electric fan, its a case of 'do as I say not as I do'. LR did design the engine to have a fan, they wouldn't have if it wasn't needed. I have a small fan to fit to The 109's intercooler to provide airflow at low speeds...just got to figure a way of automatically switching it... Quote Link to comment Share on other sites More sharing options...
mmgemini Posted April 23, 2012 Share Posted April 23, 2012 ejparrott Not just you. Me as well. When I did my timing belt last September. I didn't put the fan back on.. I think driver awareness is needed though. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 23, 2012 Share Posted April 23, 2012 ejparrott Not just you. Me as well. When I did my timing belt last September. I didn't put the fan back on.. I think driver awareness is needed though. You also have a decent temperature gauge Mike. Quote Link to comment Share on other sites More sharing options...
mmgemini Posted April 23, 2012 Share Posted April 23, 2012 Not only but a coolant loss sensor. Something I recomend for the 300Tdi. Yep the gauge is good. Needs to be for the price, comes with a high temperature adjustable warning light. Quote Link to comment Share on other sites More sharing options...
Snagger Posted April 23, 2012 Share Posted April 23, 2012 For what it's worth, I have a 14" electric fan on my 109's 200Tdi conversion because the viscous fan wouldn't fit with the Discovery engine's fan position, and I don't like it at all. A Defender engine would have been better and I'd have retained the original fan. The electric fan helps a great deal on long mountain climbs, but it struggles in the summer heat on mountain roads. My 300Tdi RRC will retain its standard fan, even though the vehicle is rarely pushed hard enough for it to be needed - you just never know when it might be necessary. A fan is essentially an insurance policy for most of us, but some vehicles really work hard and need them often. I remember the guys at Atlas Overland telling me about one idiot who had a 90 on their Libyan trip. His engine overheated in the desert, and when they opened the bonnet they saw the fan had been removed - he replied that the Tdi didn't need it! His vehicle went home on a trailer from the next town. Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted April 23, 2012 Share Posted April 23, 2012 three questions: Where does one get a coolant loss sensor and is it just a light that comes on - how does it work etc. (ok more that three questions). Is there any point putting the cowling back on if you have an electric fan? (200tdi Defender engine). Can the kenlowe 14" replace the viscous unit or would it be worth while throwing the viscous back on as well? Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted April 23, 2012 Share Posted April 23, 2012 Put the viscous fan back on and save yourself the expense of the kenlowe Mo Quote Link to comment Share on other sites More sharing options...
ejparrott Posted April 24, 2012 Share Posted April 24, 2012 A properly working viscous fan is best, if it will fit unlike mine, and likewise the cowling. The viscous fan will freewheel until it gets hot, so move little air over the rad during warm up. If the coupling fails, it locks on and so the fan is permanently pulling air over the rad during warm up. Quote Link to comment Share on other sites More sharing options...
ActiTour Posted April 24, 2012 Share Posted April 24, 2012 We put a manual switch on UAZ cars to switch off the fan when going into deep water - otherwise it sprays water on the sparks and the ceramic cracks... Is the water sprayed by fan a problem on the diesel Puma LRs? I have seen on the utube along with installing a snorkel, a guy was covering the TD5 grill with a removable leather cover before going wading... Is it the same problem? Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 24, 2012 Share Posted April 24, 2012 We put a manual switch on UAZ cars to switch off the fan when going into deep water - otherwise it sprays water on the sparks and the ceramic cracks... Is the water sprayed by fan a problem on the diesel Puma LRs? I have seen on the utube along with installing a snorkel, a guy was covering the TD5 grill with a removable leather cover before going wading... Is it the same problem? The covering of the grill is normally to stop clogging of the radiator by mud/debris from the water Quote Link to comment Share on other sites More sharing options...
mmgemini Posted April 24, 2012 Share Posted April 24, 2012 three questions: Where does one get a coolant loss sensor and is it just a light that comes on - how does it work etc. (ok more that three questions). Is there any point putting the cowling back on if you have an electric fan? (200tdi Defender engine). Can the kenlowe 14" replace the viscous unit or would it be worth while throwing the viscous back on as well? Coolant loss sensor here http://forum.difflock.com/viewtopic.php?t=10972&highlight=300tdi+coolant+level+sensor I don't think it's needed on a 200Tdi because of the design differences No viscous fan freewheels, it always pulls air. Even at a minus ambient temperature it will cool the engine. Stand at the grill of a Land Rover with a correctly working viscous fan. Put your bare hand there on a morning when the ambient temperature is below freezing and fell the freezing air beeing pulled through the radiator.. Quote Link to comment Share on other sites More sharing options...
ActiTour Posted April 24, 2012 Share Posted April 24, 2012 The covering of the grill is normally to stop clogging of the radiator by mud/debris from the water So deep water is no problem with 110 Puma engine with open grill, and no transformations are needed except the snorkel and extended axels air intake Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 24, 2012 Share Posted April 24, 2012 So deep water is no problem with 110 Puma engine with open grill, and no transformations are needed except the snorkel and extended axels air intake Sorry I don't know what else you would need to do. Also depends on what you class as deep, the older tdi engines also really needed other breathers extended for example the injector pump, you also should be concerned as to the fuel cap going below water as those are breathable. Puma engines are quite new still so I doubt many people have given them a good dunking. Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted April 24, 2012 Share Posted April 24, 2012 A properly working viscous fan is best, if it will fit unlike mine, and likewise the cowling.  The viscous fan will freewheel until it gets hot, so move little air over the rad during warm up.  If the coupling fails, it locks on and so the fan is permanently pulling air over the rad during warm up. That's what happened on the 90 that led me to throw a kenlowe on it (or rather it wouldn't lock). Also I never had the cowling on the viscous was fairly useless anyway (is that right?). Have a kenlowe on the 110 project as it didn't have a fan when I got her and since previous experience + naivety in believing fuel reduction stuff I went electric - all fitted now so what you gonna do?Also with the 90 it was fixed off and overheating - only when fitting the kenlowe did i find out that it was because of the amount of clay in the rad rather than a duff fan - whoops... Quote Link to comment Share on other sites More sharing options...
PieEater3142 Posted April 24, 2012 Share Posted April 24, 2012 Sorry I don't know what else you would need to do. Also depends on what you class as deep, the older tdi engines also really needed other breathers extended for example the injector pump, you also should be concerned as to the fuel cap going below water as those are breathable. Puma engines are quite new still so I doubt many people have given them a good dunking. CwazyWabbit - do you mean the timing case breather or is there another breather on the injector pump of a tdi engine. Been fitting it all and haven't come across a breather on the injector pump other than that. Think you should have: 2 axles, gearbox, transferbox and timing case. Is that it? Also you need to put the bungs (threaded with seals) in the top and bottom of the bell housing? Have I missed anything? Quote Link to comment Share on other sites More sharing options...
ejparrott Posted April 24, 2012 Share Posted April 24, 2012 No viscous fan freewheels, it always pulls air. Even at a minus ambient temperature it will cool the engine. I didn't say it stopped pulling air through the rad altogether. There is a considerable difference between airflow when the engine has just been started, and when the needle is touching the red. A properly working Viscous coupling can be stopped when its cold, thats the test for whether its functioning correctly. Quote Link to comment Share on other sites More sharing options...
4b4 Posted April 24, 2012 Share Posted April 24, 2012 Hi - sorry to hijack slightly, but does anyone know whether Tim from the difflock forum is still supplying the coolant loss sensor? - as I'm just fitting a 300tdi and it seems a worthwhile insurance plan Many thanks Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 24, 2012 Share Posted April 24, 2012 There are times of year that you might get away with no fan... but I wouldn't risk it. For what my truck is used for, a viscous doesn't make sense. I have an electric fan on mine and it has only come on twice because its been needed. Both times were when I knew the rad was full of mud and not doing much cooling! I see no point what so ever in having the viscous there, yes its not spinning to its full extent when the engine is cold but it will still be moving and moving air. It is taking energy when its not needed, no one can deny that. How much... probably not noticeable if we're going to be honest but every little helps. Quote Link to comment Share on other sites More sharing options...
discomikey Posted April 24, 2012 Share Posted April 24, 2012 ejparrott Not just you. Me as well. When I did my timing belt last September. I didn't put the fan back on.. I think driver awareness is needed though. and again.. i have had no fan since the crash, never used it before then either Quote Link to comment Share on other sites More sharing options...
carlosbeldia Posted April 25, 2012 Share Posted April 25, 2012 I live in Colombia. In my city the common temp in a good day is 35ºC. My TD5 gets up and down in his temp, I suppose due to the viscous, same thing with the 300 of a german friend, viscous was coupling all time. One time the viscous in a Disco V8 failed and the car was overheating in minutes, so I think it's really needed. Mine can be stopped with the hand when the car is cold. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 25, 2012 Share Posted April 25, 2012 CwazyWabbit - do you mean the timing case breather or is there another breather on the injector pump of a tdi engine. Been fitting it all and haven't come across a breather on the injector pump other than that. Think you should have: 2 axles, gearbox, transferbox and timing case. Is that it? Also you need to put the bungs (threaded with seals) in the top and bottom of the bell housing? Have I missed anything? Have a look here http://forums.lr4x4.com/index.php?showtopic=2895 basically the injector pump needs a breather for the diaphragm in the injector pump to work. Quote Link to comment Share on other sites More sharing options...
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