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I did it on my 88 4runner with a flex-a-lite dual setup custom fit for the 4runner...
That has been discussed quite a bit, and while there are advantages, the reliability if the stock fan wins out.....
TRU, I wonder if your fan pushing that much air decreases your mileage?
Romer- IIRC, CDan has exactly the same setup and he said that his produced no significant coolant temperature decrease. 10F is huge! Are you sure the decreae is not due to the fan clutch changing fan speed or the thermostat opening? I have a 14", 3000CFM pusher fan installed and, while AC performance is much better, coolant temperature does not change according to OBD2. And I have verified that it is pushing air into the condensor and it is sealed against the condensor properly.
How did you measure this 10F decrease? Can you take multiple measurements with fan on and off and post them? Is there anything else you did differently from CDan to get such a great coolant temp decrease while he did not? I'll post some measurements from my setup soon for comparison.
I'm of the mind that most any vehicle manufacturer's OEM electric fan will be as good as any clutch fan, because when a car builder offers a 7 or 10 year warranty on a drivetrain with an electric cooling fan, he's going to put top quality parts and labour into the assembly of that fan to prevent warranty claims due to overheating.
If something like Ford's 19" Crown Vic (fleet/cop) fan or Mazda's dual fan from the older RX7 pulled enough CFM, I'd give it a try.
**Note: I don't live in a hot climate. Overheating, even when stopped in traffic for extended periods isn't an issue here.
I agree.
If the stock fan clutch setup was so good you wouldn't need to "tune-up" the blue hub clutch.
I would like to do this as well...but I think I'll just have the aux. fan engage only when the A/C is on. Any feedback regarding this method. Also, any wiring info for how to do this is appreciated. Thanks all...
I ordered from Cdan. He can tell you if he has any in stock and if not what the lead time is.