Blue fan clutch mod...Thread has gone to hell, read at your own risk (2 Viewers)

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1FZ-FE Fan Clutch “Blue” With TEMP MOD for 1993 – 1997 FZJ80 Toyota Land Cruiser:

https://redlinelandcruisers.com/shop/80series/1fz-fe-80-series-land-cruiser/modified-95-degrees-fan-clutch/

Huh... Yeah, I feel like the money I saved doing it myself was well worth the time it took.

Aisin FCT-004 is currently about $75 buck on the big A. You can get that and a tube of 10k oil and walk away with a couple hundred bucks to spare. Adjusting the temp really isn't that complicated.
 
Jeez, at 300+ $$ I don’t know that I would! I wonder what is so special about it beyond the oil viscosity?
 
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Jeez, at 300+ $$ I don’t know that I would! I wonder what is so special about it beyond the oil viscosity?
It's a service for those who don't/can't wrench and fo their own.

If I didn't do my own stuff, it would be well worth it for the time spent. There is time and expenses to buy them, bring them in, modify, and repack.

You do you.
 
It's a service for those who don't/can't wrench and fo their own.

If I didn't do my own stuff, it would be well worth it for the time spent. There is time and expenses to buy them, bring them in, modify, and repack.

You do you.
I mean, yeah... nothing is free, but to my mind the installation is the hardest part of the job - and that's pretty simple too.
 
Does the 1FZ-FE HD Blue hub fan clutch mod from Land Tank fit the HDJ81 1HDFT?
No, see his website for orange hub models to suit the diesels
 
for another reference point.....i live in so cal and i replaced mine with 10k recently. when my 1fz is warmed up and sitting idle at a stop light i am holding at 194.
I am trying to figure out this on my 95, did you follow the land tank adjustment procedure? Following this is the fan fully on anytime the air temp to the spring is over 95 degrees? Or does more of a variable thing where it come on stronger as the air gets hotter? I have a 95 as well and have put off fixing the temp issue for too long. Thanks
 
July 22 of next year, we should throw a 20th birthday party for this thread. 🎂 It'll be almost old enough to vote DRINK!
 
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My HDJ81 has the “orange” fan hub. Might need to put more oil in it, not getting the fan roar on startup and fan can be turned by hand with engine stopped.
My stock Asian light blue fan clutch doesn't roar either. I think the roar happens more with gas engines that have the high cold idle right away.
 
July 22 of next year, we should throw a 20th birthday party for this thread. 🎂 It'll be almost old enough to vote.
Almost? Do you have to be 21 to vote in Arizona? How about wait 'til 2027 and buy it a shot. :rofl:

@fj80T I played around with 10k and 15k oil, and I felt 15k was too abrupt - the 10k is still variable. I'm actually thinking about backing mine off around 5 degrees because I have been completely unable to push my temps over about 198 in the absolute worst conditions I could muster (high ambient temps, steep hills, low speeds and high elevation, all at once), and that leads me to believe I'm just wasting fuel the rest of the time, spinning a fan too fast. I can FEEL the drag on the engine when it's fully engaged and I don't mind if I'm in a situation where it's needed, but the numbers just don't seem to support that. I had a thread with a poll on here last year trying to get a feel for a consensus on what "dangerous" temps were. I think the most plausible data point I found was that the AC shuts off at 226, which strikes me as Toyota telling you it's time to cool things off. Using that logic, I feel like I've got plenty of room to play with adjustment.

The other main reason to use a more aggressive setting is cooling the AC, especially when parked, or at low speed. The electric AUX fan should make that a non-concern.

Sorry, I can't seem to locate my notes on what temp setting I used when I adjusted mine, but I THINK I went with something like 105. I used a sous-vide bath and let the fan sit for a while to get a nice stable temp, propping it up so the bottom half of the fan body was still immersed in hot water as I adjusted it. It made the adjustment really simple.

Edit: obviously, the turbo guys have a different set of circumstances, and I'm not making any assumptions on their needs.
 
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Almost? Do you have to be 21 to vote in Arizona? How about wait 'til 2027 and buy it a shot. :rofl:

@fj80T I played around with 10k and 15k oil, and I felt 15k was too abrupt - the 10k is still variable. I'm actually thinking about backing mine off around 5 degrees because I have been completely unable to push my temps over about 198 in the absolute worst conditions I could muster (high ambient temps, steep hills, low speeds and high elevation, all at once), and that leads me to believe I'm just wasting fuel the rest of the time, spinning a fan too fast. I can FEEL the drag on the engine when it's fully engaged and I don't mind if I'm in a situation where it's needed, but the numbers just don't seem to support that. I had a thread with a poll on here last year trying to get a feel for a consensus on what "dangerous" temps were. I think the most plausible data point I found was that the AC shuts off at 226, which strikes me as Toyota telling you it's time to cool things off. Using that logic, I feel like I've got plenty of room to play with adjustment.

The other main reason to use a more aggressive setting is cooling the AC, especially when parked, or at low speed. The electric AUX fan should make that a non-concern.

Sorry, I can't seem to locate my notes on what temp setting I used when I adjusted mine, but I THINK I went with something like 105. I used a sous-vide bath and let the fan sit for a while to get a nice stable temp, propping it up so the bottom half of the fan body was still immersed in hot water as I adjusted it. It made the adjustment really simple.

Edit: obviously, the turbo guys have a different set of circumstances, and I'm not making any assumptions on their needs.
Thanks for the info, my 95 has an issue with the idle speed creeping up starting when the coolant temp is around 200-205. I am not wanting the fan on all the time. Since I kept my old fan clutch I have 2 fan clutches I can play around with it. Also adding a 4 row aluminum radiator so maybe I just need the 10 k fluid.

Thanks.
 
Thanks for the info, my 95 has an issue with the idle speed creeping up starting when the coolant temp is around 200-205. I am not wanting the fan on all the time. Since I kept my old fan clutch I have 2 fan clutches I can play around with it. Also adding a 4 row aluminum radiator so maybe I just need the 10 k fluid.

Thanks.
10k by itself is a huge difference as long as your setting isn't WAY off. I will also say, that the "setting" we're using doesn't really translate to ambient temps. The fan clutch is sitting there in between your hot engine and your hot radiator, so our setting is just an arbitrary set point, but it would be useful to know where it's set, especially since you have two and are potentially switching back and forth.

All that doesn't explain your weird idle speed situation though...
 

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