Haha I live where the average temperature is 65* year around.
That being said I do travel around and sometimes the heat can’t be avoided.
Suddenly-high temps
- Thread starter COS80
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That being said I do travel around and sometimes the heat can’t be avoided.
This subject has been beat to death 
That being said I have worked hard to be able to keep my rig cool in 90 to 100* ambient temps and the motor temperature under 200*
With the AC blasting.
That’s why we drive Land Cruisers.
These trucks are old so like others have said it best to just refresh the hole system that’s what I did right down to the fan itself and the shroud, I also put foam around the radiator like it came from the factory.
I also installed 100 series fan over the condenser like other market 80 series have this won’t help cool the motor but it helps keep the AC super cold.
I don’t DD my 80 it get used in a extreme way hard core rock crawling and I run 39” tall tires on some of the hardest trails in America this in itself is hard on the truck creating extra heat on the drive train, including the motor.
It was still getting hotter then I liked, I would end up bumping it into neutral and kicking the RPM up tell the temp dropped back down.
Then I tried the photoman 10% under drive fan pulley designed to be run with superchargers.
This has made it so that even in the most extreme cases I never see ET over 205*
Most of the time even hard core rock crawling 195*
Regular driving, it runs between 176 and 180*
The running hot issues are in my past.
I do have to switch that pulley out for the Stock one to get it to pass driving around town it just hasn’t get up to standard operating temperature's
That being said I have worked hard to be able to keep my rig cool in 90 to 100* ambient temps and the motor temperature under 200*
With the AC blasting.
That’s why we drive Land Cruisers.
These trucks are old so like others have said it best to just refresh the hole system that’s what I did right down to the fan itself and the shroud, I also put foam around the radiator like it came from the factory.
I also installed 100 series fan over the condenser like other market 80 series have this won’t help cool the motor but it helps keep the AC super cold.
I don’t DD my 80 it get used in a extreme way hard core rock crawling and I run 39” tall tires on some of the hardest trails in America this in itself is hard on the truck creating extra heat on the drive train, including the motor.
It was still getting hotter then I liked, I would end up bumping it into neutral and kicking the RPM up tell the temp dropped back down.
Then I tried the photoman 10% under drive fan pulley designed to be run with superchargers.
This has made it so that even in the most extreme cases I never see ET over 205*
Most of the time even hard core rock crawling 195*
Regular driving, it runs between 176 and 180*
The running hot issues are in my past.
I do have to switch that pulley out for the Stock one to get it to pass driving around town it just hasn’t get up to standard operating temperature's
COS80
SILVER Star
- Thread starter
- #43
Probably, but I'm new.
Before this devolves any further, into me being the idiot who wants to run Death Valley at redline with just a CPU fan, let me just say thank you for all of your input. I believe my original question...
...COS80 said:
...has been answered: it's normal behavior. The clutch has all its oil, everything's already new and upgraded... it's just hot out. It's entirely possible, since I bought this truck last August, that these are the first 90+*F days that it got pushed this hard.
Again, thank you
Please don't get upset with how we state things. We really are trying to help. I, for one, am usually a bit abrasive.
I don't believe that "just because it's +90°F" that's the way it's going to be.
Measure the diameter of your pulleys, as many with the supercharger installed a different sized pulley to aid in cooling.
Keep talking through the issues.
You will eventually state something that leads one of us to the answer.
We may kick you when you're down, but we'll help you up again.
Give back what you're getting. We all have pretty thick skin.
Usually, if I can't see the answer, I start over at the beginning and assume nothing.
Just wanted to be sure you were comparing apples to apples. People can get hung up on numbers without looking at the whole picture.
COS80
SILVER Star
- Thread starter
- #46
I'm not upset, but I see why you think I might have been. It seemed like we were at the point where things go down the toilet, but the several posts about pulling over and revving the engine confirmed that this is all pretty typical (or at least thats what I determined). I'm grateful for the help I've received to get there.
I wouldn't be surprised if I had an upgraded SC pulley without knowing it - I've already stumbled upon more than one upgrade I didn't know i had. Ill measure tonight.
I missed that you have a SC. Since you have a blue clutch you likely also have a ringed fan.
You might consider my SC orange fan clutch and going back to the stock fan. Big improvement.
You might consider my SC orange fan clutch and going back to the stock fan. Big improvement.
COS80
SILVER Star
- Thread starter
- #48
I don't have the ringed fan. I actually found a post by the PO where he went back to the stock fan, and I was scratching my head as to why, especially after having read page after page of posts about how the ringed fan prevents radiator destruction with the SC.
Can you point me to the answer to this, and to the benefit of the orange hub? PM is fine, if you prefer.
Last edited:
mudgudgeon
Resident galah
Orange hub.
The hub is shorter, and the right length to work with supercharger pulleys, and keep the correct clearance to the radiator
A little history lesson.
The TRD supercharger originally had a ?3/4”? spacer on the water pump for the fan clutch to mount on. Because of this they subbed in a smaller ringed fan to guard against damaging the radiators.
Running hot was the norm at that time.
I came up with modifying another Toyota clutch that was slightly taller than the blue clutch but cleared the SC belt which meant that there was no need for the spacer and enough room for the return of the stock fan.
Once people saw my solution they started experimenting with copying the idea by stacking washers and other means.
Because you have a blue clutch on there with a stock fan something has been done to make things fit. Anything from mounting the fan clutch on the factory spacer which puts the fan very close to the radiator to stacks of washers or something else.
Post a top view of the water pump clutch interface as well as the fan to clutch interface.
The TRD supercharger originally had a ?3/4”? spacer on the water pump for the fan clutch to mount on. Because of this they subbed in a smaller ringed fan to guard against damaging the radiators.
Running hot was the norm at that time.
I came up with modifying another Toyota clutch that was slightly taller than the blue clutch but cleared the SC belt which meant that there was no need for the spacer and enough room for the return of the stock fan.
Once people saw my solution they started experimenting with copying the idea by stacking washers and other means.
Because you have a blue clutch on there with a stock fan something has been done to make things fit. Anything from mounting the fan clutch on the factory spacer which puts the fan very close to the radiator to stacks of washers or something else.
Post a top view of the water pump clutch interface as well as the fan to clutch interface.
ChaseTruck
--
If I remember correctly, the 3FE fan works with the original S/C spacer; looks stock-ish but is not. The stock 1FZ fan is larger in diameter, but needs a different spacing to not conflict with either the S/C belt, or the radiator. Our S/C’d ’93 has a custom spacer made by the late Tools R Us to accommodate the stock 1FZ fan, a blue clutch with ~30k oil, the water pump overdrive pulley, and a TYC radiator with foam around it. It lives in Phoenix, has mostly trail duty (well, except for this summer, due to multiple fires and the resulting land closures; it passed the emissions test in June and has been sitting ever since), and 90F ambient isn’t hot.
I thick chase truck is right. There is a spacer on your truck so the stock fan won’t fit. I had actually forgot about some using the 3fe fans. Those were better than the ringed fan but not as good as the stock fan.
If that is what you have then that would definitely be better.
ChaseTruck
--
The 3FE fan has some short fins on the motor side of the fan blades, probably to help direct air flow towards the motor, instead of air moving radially off the fan blades and thereby back into the fan shroud. I can't tell from your pic, though. I've heard a fan blade from a 4Runner - don't know what model - can also be fitted, never seen one though.
