What are these 2 coolers for sc400?
01-08-13, 09:48 AM
#2
I've seen it and wondered the same thing. Oil maybe?
Then again it wouldn't be unheard of for it to be for the transmission too. Most setups run it through an air cooler like this and then into the loop within the radiator so the fluid isn't too cold in freezing conditions.
Then again it wouldn't be unheard of for it to be for the transmission too. Most setups run it through an air cooler like this and then into the loop within the radiator so the fluid isn't too cold in freezing conditions.
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01-09-13, 12:12 AM
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The hydraulic fan arrangement was definitely some sound thinking. At idle speed, the ECM can call on any fan speed from 0% to maximum In the commercial heavy equipment field, it's the only way to go. Problem is, things just aren't that serious under the hood of the average street car to justify using such a system. It would be good for something like a taxi, ambulance, or police car. Something idling under some miserable conditions, or under terrible loads at relatively low engine and vehicle speeds.
Trouble is, hydraulic systems are comprised of wearable components that need servicing. That's where you end up with 1UZ's that have a big gunky deluge of fan fluid on the front of the engine.
Trouble is, hydraulic systems are comprised of wearable components that need servicing. That's where you end up with 1UZ's that have a big gunky deluge of fan fluid on the front of the engine.
01-09-13, 09:02 PM
#9
The hydraulic fan arrangement was definitely some sound thinking. At idle speed, the ECM can call on any fan speed from 0% to maximum In the commercial heavy equipment field, it's the only way to go. Problem is, things just aren't that serious under the hood of the average street car to justify using such a system. It would be good for something like a taxi, ambulance, or police car. Something idling under some miserable conditions, or under terrible loads at relatively low engine and vehicle speeds.
Trouble is, hydraulic systems are comprised of wearable components that need servicing. That's where you end up with 1UZ's that have a big gunky deluge of fan fluid on the front of the engine.
Trouble is, hydraulic systems are comprised of wearable components that need servicing. That's where you end up with 1UZ's that have a big gunky deluge of fan fluid on the front of the engine.
01-10-13, 08:37 AM
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SC400s, Aristos with the 2JZ-GTE, early ES300s, and early V6 Camrys, far as I can tell.
Fans were powerful enough that auxiliary condenser fans were forgone in all of the above models. Something like this really belonged in the LandCruiser or 4Runner.
But there is more to it. The hydraulic motor is the only type of fan drive that could properly operate that big paddle bladed fan. An electric motor would require too much draw, and an engine driven fan could never use that design at the high rpms it would turn because it would be aerodynamically inefficient at those speeds.
Why is this important? A large paddle bladed fan is quieter than any other design. Nice, cool, quiet, powerful operation, taking nothing away from the alternator or battery.
Fans were powerful enough that auxiliary condenser fans were forgone in all of the above models. Something like this really belonged in the LandCruiser or 4Runner.
But there is more to it. The hydraulic motor is the only type of fan drive that could properly operate that big paddle bladed fan. An electric motor would require too much draw, and an engine driven fan could never use that design at the high rpms it would turn because it would be aerodynamically inefficient at those speeds.
Why is this important? A large paddle bladed fan is quieter than any other design. Nice, cool, quiet, powerful operation, taking nothing away from the alternator or battery.
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