HILUX COOLING FAN TEST - Which works best? 10 Blade, 7 Blade OR Electric? 

Awesome to see, my 1kz surf i put the 10 blade fan on, and it has made a difference, although I don't have an aftermarket temp gauge, I did modify the factory one to respond to all temperature changes, it roughly sits around the 90° mark on hotter days 35+ ambient, I feel it can be better just not certain how I can improve it though

Awesome video. Glad to see such informative content on the 2L-TE. Keep it up mate :)

Great detailed video! I am in Canada and getting my Hilux ready for a trip to Costa Rica in October. I have been concerned of the cooling and am going with the Champion 3 bank rad with a 10” fan after topping off the viscus hub. Hearing the results of your test, I think I am on the right track. Will install an EGT ahead of the blower as you suggested along with the water temp gauge, after that piece of info stating the temp on a factory gauge doesn’t climb until 110c is reached😮. Thanks again!

I got a rodeo with high flowed turbo chiped 3 core radiator and au twin thermos and it keeps up no worries .l love the vids

Hey Carl, Done a lot of testing on these . From my investigations you need a viscous with a good shroud. on the rear . But on the front you need a really good set of pusher fans also with a shroud if possible . This was mostly tested in deep sand full to 3/4 throttle.

Glad to see the 10 blade does that much better. About to do this upgrade on my Prado and get some fresh silicone oil in the hub. I go out to the Rocky Mountains in New Mexico and Colorado, as well as a canyon near where I live where the descent into it requires 4L and L gear both up and down. Have been nervous about going out in the Prado because I just got done replacing the head and turbo a few months ago and I'm anxious about taking it offroad again since that

Fkn epic mate! Keep up the great content!

Great summary of your R&D on this topic. Starting with changing the fan and most probably the hub for my LJ78. As you posted this 2 years ago, would be great to see if you have some new takeaways from this... obviously, if you still have this car :)

Your a legend keep up the good work

Top vid man 👍 it’s funny given your original driver to try the thermo fan was idle and high load. Mine was fine with the viscous at high load and cruise (mind you it’s not a surf) but was no chop at idle, and the thermo only suffered under high load but sorted my idle temps. Really enjoyed watching this vid 👍

Great detailed video mate. I'm going through the same thing on a J90 Prado with a 3UZ 6 speed Auto, no room for a viscus. I think the main thing with thermos is they need space in the engine bay to let the heat escape. Going to see if EL/AU dual thermos will fit.

Love the graphs :)

I flushed both my rad and heater core (separately) in reverse flow, all the shops are set up to flush in normal flow direction? Seems to me reverse will move blocks easier, worked for me!

What headlights have you got on here, they look awesome

More info on the fan please mate. Are you saying an 80 series hub bolts straight to a 1k fan and they bolt straight to the 2lte water pump??

Thankyou for doing this and recording results! :)

I like ur video , but a 2LTE I totally have no comments about that engine. A 3L or 5L will be a lot better . I personally would go with fully mechanical 5L turbo engine. It does really make a huge difference . Cheers mate

Will the 10-blade fan fit on a Land Cruiser KZJ78 Prado’s 1KZTE?

Sir, can 3L's engine fan clutch fix with this 10 blade fan? Will it hit effect the fan shroud?

Hey mate sorry to pull up some old videos. I’m about to refresh my 2lte surfs cooling system. I’ve got the 10 blade fan with new hub, and water pump, but I’m having issues finding the right radiator in aus. Which did you go for? I want as much extra cooling capacity and efficiency as possible. I also ordered a standard 88 deg thermostat, but I’m wondering if I should go for a lower temp one? If so where did you get yours because again I’m struggling to find one haha, cheers mate

Thank you so much for your videos and information mate, I'm from Paraguay and I have a 94 4 runner 3l engine wich I turbinated with the shitty ct20. Our normal temperatures in summer goes from 38 up to 45 degrees Celsius and we use ac all day everyday. First was first, I couldn't drive the truck over 100kmh with AC on, put an handmade Aluminium radiator with 1.5litres more capacity in it, it got a little better, second I intercooled the truck (air to air), got much better, third I fit an oil cooler with a sandwich oil plate and mounted it to the front of my bumper, it helped too but still I can't manage to drive it for long distances over 120kmh with AC on and over 35 degrees Celsius, I was thinking about an electric fan because the engine overheated at idle in city use with AC on (talking about 40 degrees or more) and the ventilator didn't blow enough air throw the radiator at idle and the water flow is actually too low to. I'll try the 10 blades fan as you did and I'll be thinking about "smallering" the water pump pulley in order to get more and faster Watter flow through the engine at idle.

Froth the videos mate. Super good info. 👍👍

Good one. Thank you for sharing the test results with us! Have you got any external oil cooler ? If you do could you share some info about it? And also, I remember from your early videos, you showed us a water/methanol injection kit. Did you give up on it?

I'd suggest upgrading the front A/C fan to a higher output one with an external 'switch' for when 4WDing or idling after a big run. You could probably fit 2x the same size side by side if you really wanted to. Another option would be to modify the AC condenser to be underslung (late model KZN130s came like that), thus eliminating the extra thermal load in front of the radiator.. But this would not be something I'd recommend for someone taking their Surf offroad...

Fantastic review mate , well done . Cooling is a very interesting topic - I too am in 3 minds in which direction to head next .. I’m in a 105series LC with a turbo charged 1-FZFE engine with 18psi boost. I too have elevated temps at idle with my standard vicious hub & blade ( Bull bar , FMIC , Oil cooler, Winch, Light bars all don’t really help the air flow when stationary .. ha ha ) I have contemplated dual thermos out of a XR6 / XR8 which I could make fit .. also bonnet vents & reverse bonnet scope to try and expel under bonnet temps when stationary .. I like the idea of the 1KZ fan blade … So my question is .. Did you have to modify the 1KZ fan blade bold hole centres to fit the 80 / 105 series vicious hub bolt holes .. or was it a direct fit ? Thanks again for the vid !

I put a 5L-E/2lte monstrosity in my surf years ago and its done 120000k no probs. However, looks like I'll need an 80 series hub and 10 blade for when the CT turbo gets swapped and boosted to the moon ;); it will have a part from all 4wd toyotas and all generations by the end of its life, if that ever happens.

When I use a thermal camera on my ln130 it never goes above 70f, (even on a hill where turbo temp goes to 900f and I back off to drop that) measuring thermostat or any hose. I have a 82f thermostat. How are you measuring temperature?

Put an extra bottle of hub oil in your viscose hub it locks it up sooner.

Having the same issues with a ln106r hilux mate converted it to thermo and initially happy until I hit the high way ,,,instant disappointment , new viscous n fan on order, yes mine is turbo and intercooled, I even ordered a new ct20 turbo too ,and injectors to be sure, be a good thing once sorted tho ........i hope up the old girls

Hey mate, I'm just about to refresh my cooling system on my 1kz surf. Gonna change the fan clutch viscous oil, swap in a 71 degree thermostat and wanna get a 10 blade fan as well. Any chance you could link me the one you bought? Also thanks heaps for the info in this video, it's really helpful! Cheers

Hit me up if you want to sell the old wiring setup for the thermo. I'm still keen as for an electric setup on my 4Runner.

Have you tried using a higher pressure radiator cap by any chance? Like 1.3 bar or maybe even higher? I'm gonna put a 10 blade fan on my KZN165R and 1.3 bar cap, hopefully it stays below 100°C

Cheers

Be interested in seeing how the 80 fan compares to the 1kz.

In your video you mentioned getting rid of the ct20 turbo What’s your replacement turbo of choice

Did the 10 blade fit on the original clutch fan

Awesome video mate I'm.running the kzn130 with alloy 3 core rad 10 blade fan and viscous emptied and refilled with 10000cst oil Next upgrade will be a cooler opening thermostat but hoping you do it first so I can check your results Don't have the heat you have here in the UK so I removed my air con radiator for added air flow

Try a koyo stock radiator mate you’ll be surprised, the heat soak in thicker radiators make it harder to cool as there’s more mass, versus a thinner radiator that dissipates heat quicker and easier, I had a 1kzte hilux and had big issues with cooling when I went bigger tyres fully loaded, tried a thicker radiator and I had even more issues, went and got a new koyo factory replacement radiator and it turns out my initial radiator that was in from new just had a build up of crap making it inefficient to begin with.. just a thought mate, I now have a 80 series with a 1HDFT that’s running a decent wack of boost and power and I had the exact same results, thinner radiator was better

What's your oil temperatures like?

Can the 1kz 10 blade fit the 2.8 viscous hub????

remove the thermostat then there will be no overheating)