Wizard
in the thread What happened to your Discovery 2 today? there is a post re replacing the viscus fan with 12v electric,now if this electric fan was to provide proper cooling to the engine [different opinions that it does or not] would it be possible to run a shorter belt to bypass that pesky timing cover bearing,mine has been glued in and if it fails will probably be a new timing cover needed.
Swaggie
SubscriberOf course.
You would have to be able to get a 7 rib belt of the proper length which may not be so easy. (maybe a 5 rib would be Ok with the lesser load , but you would have to make sure the ribs are aligned, but you have to ensure that anyway)
Just measure with a tape measure and make sure the run does not foul anything .
Get a belt a little longer so that the tensioner can take up the slack and you can actually fit it.
Regards PhilipA
Master
Supporterif it's been glued in with bearing retainer some heat and it shouldn't be impossible to remove.
Master
I tried the electric fan cooling method for a while.
My biggest concern was the amount of belt wrap on the A/C pulley, but I had no issues with belt slipping.
I still have the radiator with fans attached in my workshop. Also the original belt I used to bypass the thermo fan is there as well.
If you need the part number for the belt let me know.
If I remember correctly I only removed the pulley from the hub. I left the hub, spindle and bearing etc insitu...
cheers
Please Note: My TD5 has ACE so may have an original belt longer than yours. Shouldn't be hard to calculate the size belt needed if you deducted the difference
between my two belt sizes.
Master
SupporterMust admit had not thought of doing away with the pulley but it makes sense and would have saved some angst with changing the bearing out. Would appreciate the belt size if it is at available, thanks!Originally Posted by mylesaway
2004 Discovery 2a TD5 Auto Aspen Green AKA Robin
2000 Discovery 2 TD5 Auto Alverston Red AKA Edward
1997 Discovery 1 TDi Manual White - Gone but not forgotten
1994 Discovery 1 V8 Auto - Gone once it consumed half the worlds resource of oil
Wizard
how did the elec fans handle the cooling,did you notice any difference , no ace on mine unfortunately so there would be less strain on the belt,I will at least get a shorter belt to carry in case the bearing decides to move i am in the nt and go bush fairly regularly so the bearing glued in is a constant threat to my sanity,at least i can keep moving even short distances with the shorted belt fitted.
Swaggie
SubscriberDidn't you put the circlip back?the bearing glued in is a constant threat to my sanity,at least i can keep moving even short distances with the shorted belt fitted.
That is the failsafe hold in.
If the circlip is there the worst that can happen is that the bearing becomes sloppy which you will hear.
Regards PhilipA
Wizard
I didnt do the job but a good landy mechanic did. I only found out about it by going through the receipts after i bought the car.
Wizard
well i will be buggered jinxed myself in this thread,guess what i spent last weekend doing.glue and grub screw.
277114853_1027482677902381_5715194480000250637_n.jpg
Master
SupporterFirstly, going to Electric Fan (but also electric waterpump and controller from Davies Craig) on the TD5, I did not have a baseline of temps before the change as to how the temps are with the Viscous Fan. The DC system uses a probe to measure the temps of the fluid (insitu just before the radiator inlet) and this shows a difference from the Nanocom measured standard sensor of up to 15C higher, mostly around 10C. Day to day running, have stopped looking at the temps regularly as the system copes just fine with no issue, even an hour in 'peak hour' at high 30C's
On a recent trip in the Vic High Country, for the greater part, the system was exemplary and the temps would go to around 95-96C and the EF would kick in and return it back to 88C and this on and on, very very normal behavior.
Again I must make the point, the temps of the EWPC are higher than the Nanocom readings - the D2 has the AC Condenser fan that kicks in with high temps based on the system readings. There is some conjecture re the kick in temps but again this is measured off the same feed as the Nanocom.
Then then there were two river crossings to the top of the mountains both 1200-1400metres, not done leisurely and they were steep. The EWPC showed that the temps slowly rose upward and on the first which was a continuous climb with out slowing, it peaked at 120C at the top. On the second climb, stopped for a couple of minutes rest three quarters up to bring the temp back from 115C to 90C and then reached 105C at the peak. Both front and rear conditioners were on at all times with no consideration for the temps in driving taken, keeping up with lead driver.
So is this a concern? I do not know as do not have a baseline with the VF being measured in such a way and the temps are still below boiling point of the coolant in a pressurized system. There are plenty of anecdotal stories of temps of 110C on the Nanocom without problem to engines on this site - also have the AMC head which may be beneficial.
The other aspect that must be taken into consideration with this as being is the EF viable, is, the Electric Water Pump. The 150LPM flow is available at idle if the temps are above the set coolant temp. In a normal system, slowing down to decrease temps slows the coolant flow and fan speed as well. That the two climbs were with the engine around 2000-2600rpm and M1 and M2 low range, EGT's in the 400C's boosting to around 24psi at times.
Today I am going to refit the VF for a more accurate and informed decision as to the viability of the EF before the planned Robe Beachport trip. PhilipA gave a pointer to the Merc fan set up which I am going to investigate after the trial of the VF, the DC EF has a cfm rating of just over 2000 - on my estimation a rating of 2500-3000cfm would comfortably cope with keepings temps below 100C in ANY condition.
2004 Discovery 2a TD5 Auto Aspen Green AKA Robin
2000 Discovery 2 TD5 Auto Alverston Red AKA Edward
1997 Discovery 1 TDi Manual White - Gone but not forgotten
1994 Discovery 1 V8 Auto - Gone once it consumed half the worlds resource of oil
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