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Post by dtreid on Jan 17, 2009 14:02:31 GMT 11
If anyone has put in an electric fan to replace the viscous drive one, what vehicle did you get it off of and what parts were required?
92 Isuzu Bighorn 3.1TD
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Post by holden on Jan 19, 2009 10:09:54 GMT 11
I have put a 14" Aftermarket electric fan on my 2.8T D MU.
Works well warms up faster, about 5hp extra at the wheels , saves radiator when water crossing as you can trun it off.
Very happy with the work I done.
Just took the viscous fan off and cowling and got a sheet of alloy cut the same size as the old cowling.
Then cut the hole for the electric fan and drilled all the holes to mount it.
Then put it together and wire it up and away you go.
Can post some photos if you want.
kane
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Nick
Isuzu Baby
Posts: 11
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Post by Nick on Jan 20, 2009 22:48:08 GMT 11
Hi Kane, I'm looking at doing the same thing, would be cool to see some photos of what you've done.
Nick
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Post by holden on Jan 21, 2009 13:03:16 GMT 11
Here's some photo's there not that good but couldnt get around some this.  Thermo switch to the right of the photo.  Top   The fuse's and relay's for the 14" radiator fan and the 10" topmount intercooler fan.  kane |
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InVinceble
Isuzu Junior
....still says ISUZU on the motor!
Posts: 77
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Post by InVinceble on Jan 21, 2009 17:27:42 GMT 11
Thought you might be interested... I have a 94 "Bighorn" 3.1TD and I've fitted a twin 12" set-up.....  Bought a tempswitch from Repco (90C on/80C off) and fitted it into a custom turned "pipe" which was then added to the lower hose. I thought it too risky to drill into the plastic radiator bottom tank...  I managed to squeeze the fuse and relay into the master fuse/relay box then fitted an on/off switch between the seats (next to the all important missle cover switch). I also have a really bright red LED (looks white in the photo) in the dash which comes on when the fans are switched off.  |
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Nick
Isuzu Baby
Posts: 11
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Post by Nick on Jan 22, 2009 20:52:33 GMT 11
Thanks guys, that gives me a few ideas to think about  Both very tidy looking setups! Nick |
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Post by geeves on Jan 23, 2009 18:10:28 GMT 11
Invincible I like yours better as holdens doesnt look like it could pull air through the whole radiator that well It would of been better to of had a more funnel shape so the fan was further back but there doesnt seem to be enough room
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Post by mulover on Jan 23, 2009 22:14:29 GMT 11
Invincible's would definately be the way to go, just another thing to add to "my things to do list" think i'll make them reversable so i can blow them out when they block up, alot of earth moving machinery have reversable fans and they work really well!!  ? |
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Post by holden on Jan 24, 2009 6:38:04 GMT 11
Invincible I like yours better as holdens doesnt look like it could pull air through the whole radiator that well It would of been better to of had a more funnel shape so the fan was further back but there doesnt seem to be enough room My fan pulls air through really well as the cowling I made makes the air go trough the radiator have to go through the fan. So when the fan is on it only can pull through the radiator. As if you didnt have a cowling it try and pull air from where ever is easyest not through the radiator. |
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InVinceble
Isuzu Junior
....still says ISUZU on the motor!
Posts: 77
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Post by InVinceble on Jan 28, 2009 19:31:24 GMT 11
For a fan to pull air through "all" of the radiator it would have to set back and have a cowl made to suit... in effect, as the original mech. set-up.
Placing my two fans tight up against the radiator means that they pull air through the radiator over the area that they cover ie. 2 x (pi x 6" x 6") = 226.224"sq. that's about two thirds of the radiators surface area. I haven't had any trouble with this to date.
The area of the radiator not covered by the fans still allows for air to pass through when driving "normally". My Mosgiel to Dunedin trip doesn't even get the fans to switch on.
I wonder if fitted a cowl as per Holden's would potentially block the air flow in that area? ....depends on how close it is fitted to the radiator I suppose.
Similarly, after I spent over an hour straightening the fins which had be folded over (effectively blocking the air flow through the radiator) thanks to the bogs on the Whitecoomb road, my temp. gauge needle now hovers 15 degrees to the left of where it used to!!
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Post by geeves on Jan 28, 2009 20:13:25 GMT 11
What did you use as a tool to straighten the fins? Anything metal would risk puncturing the tubes.
I had never thought of bent fins causeing issues. Everone thinks of mud but toitoi and grass seeds block a radiator well as well
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InVinceble
Isuzu Junior
....still says ISUZU on the motor!
Posts: 77
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Post by InVinceble on Jan 28, 2009 20:52:24 GMT 11
I used the right-angled pick from one of those pick and hook sets.
Took care and plenty of time!
There was plenty of bits of mud and grass in between them too.
Before I started I held the radiator up against the sun and I'd be lucky to see through approx. 60% of it. After hosing through from the rear I probably cleared another 10% at best.
After setting to it with the pick, and then the hose again, I've got daylight through all but about 2"sq. where there is damage from when the mech. fan blades broke off and hit it. ....hence the upgrade!
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Post by mulover on Jan 29, 2009 7:35:11 GMT 11
White comb road strikes again!!! I have seen a metal comb used by some pro's to straighten fins on industrial radiators, not sure where they got them from but a horse supply store could have something?? One of those cheap water blasters that some supermarkets sell work really well too, not enough pressure to do any damage, and the jet of water is small enough to get between the fins.
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Post by iananita on Feb 2, 2009 17:27:52 GMT 11
Top What is the sensor with 2 wires, upper right of the thermostat housing? Kane, the thermo switch you used where did you get it and would it fit into one of these sensor's holes because on my Rodeo this top hole is bunged. Ian |
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Post by holden on Feb 2, 2009 19:12:19 GMT 11
Top What is the sensor with 2 wires, upper right of the thermostat housing? Kane, the thermo switch you used where did you get it and would it fit into one of these sensor's holes because on my Rodeo this top hole is bunged. Ian Hi Ian I got the thermo switch from bindons or you could try repco as they have the same supplier. Get a thermo switch that has the same thread as the bung and swap it over. kane |
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Post by iananita on Feb 2, 2009 20:22:08 GMT 11
Kane,
Could you give me more detail on the switch, make, product number etc
I am in Brisbane, Australia. Repco here are usually only good for seat covers.
Could I also have Bindons contact details.
By the way, great job on the fan.
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Post by holden on Feb 3, 2009 6:01:12 GMT 11
Kane, Could you give me more detail on the switch, make, product number etc I am in Brisbane, Australia. Repco here are usually only good for seat covers. Could I also have Bindons contact details. By the way, great job on the fan. HI Ian, Im not sure on the make but I know it started with a T and I have no Idea on the product no. But there alot of makes out there your best bet will be to go to a your fav Auto Electrical store and will more then likely have one in stock. I just need to know the thread size of your bung. I think super cheap auto has the same auto electrical supplier as bindons and repco could try there. I dont think bindons would be a go idea as there only based in whangarei and I wouldnt think they would ship stuff to Australia anyway. I hope this helps kane |
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Post by iananita on Feb 3, 2009 15:24:13 GMT 11
Kane,
Sorry mate I'm striking out trying to find such a sensor.
Does the sensor in the picure have a control unit so you can set different temperatures for the fan.
What does the wire from the sensor attach to?
Cheers Ian
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Post by holden on Feb 3, 2009 16:21:16 GMT 11
Kane, Sorry mate I'm striking out trying to find such a sensor. Does the sensor in the picure have a control unit so you can set different temperatures for the fan. What does the wire from the sensor attach to? Cheers Ian no mine doesnt have a control unit so i can set different temperatures. mine truns on at 92c and off at 82 of something like that. the wire is the growned for the relay when it gets up to temp it growneds and the fan truns on. I have no idea why you cant find one over there is should be easy. kane |
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Post by iananita on Feb 3, 2009 20:57:01 GMT 11
Thanks Kane for the lead, it is a Tridon product.
Does anybody know size of thread + pitch of thermo sensor fitted for the pre-heat glow plug system in the thermostat housing?
It would save me some boot leather.
Ian
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