Going to single OEM fan question...
#1
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Searched this extensively and couldn't find anything in detail. Just that the second fan is used for cars with AC and it comes on at a higher temp (unless modified).
Just upgraded to a Supermiata radiator and Qmax reroute. Beautiful parts!
The car has no AC and I want to go to a single OEM fan. To remove the AC fan (passenger side) can I just cut the wires, cap them off (epoxy heat shrink) and tuck them back in the harness? Or is it more involved than that?
Engine is a '99 1.8 with a Hydra EMS if that matters.
Thanks for any help!
Just upgraded to a Supermiata radiator and Qmax reroute. Beautiful parts!
The car has no AC and I want to go to a single OEM fan. To remove the AC fan (passenger side) can I just cut the wires, cap them off (epoxy heat shrink) and tuck them back in the harness? Or is it more involved than that?
Engine is a '99 1.8 with a Hydra EMS if that matters.
Thanks for any help!
#5
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I doubt that one OEM fan is going to cut it given that BOTH OEM fans should activate when the coolant exceeds a certain threshold, regardless of whether or not the A/C is ON (that's how my MSM fans worked before switching to the TSE radiator and single MASSIVE SPAL fan).
I certainly wouldn't be tracking the car with a single OEM fan, you'll blow your radiator cap as soon as you pull into the pits because there's no way that single OEM fan will suck enough air through your radiator to help shed heat from your coolant.
Also, you're in Texas - it gets F'N hot there!
I certainly wouldn't be tracking the car with a single OEM fan, you'll blow your radiator cap as soon as you pull into the pits because there's no way that single OEM fan will suck enough air through your radiator to help shed heat from your coolant.
Also, you're in Texas - it gets F'N hot there!
#7
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Thanks guys! Got the idea for this from from Emilio's cooling system thread... https://www.miataturbo.net/race-prep...-thread-79930/
"Fans and shrouds
On a track car, only one fan is needed and no extra shrouds. We use one OEM fan and call it a day. Any extra shrouding actually inhibits high air flow mass at higher speeds on cars with adequate ducting. There is a sort of minimum air flow mass required to cool a high hp track car. Add full coverage shrouds for low speed, light load street cooling problems and you are handicapping high speed, high load airflow. On cars that are more street oriented, have A/C and big power, fans can help bandaid airflow enough to keep it alive if it never goes on track. If that same car that requires massive dual fans to survive on the street ever gets driven in anger on the track.. it’s a better idea to ditch the shrouds, start cutting up the hood and improve ducting through the nose. You will rarely see fans and full coverage shrouds on a purpose built racecar unless it's an offroad car where low speeds and debris are concern for an externally mounted core."
I'm going to give it a shot and keep an eye on the coolant temp.
"Fans and shrouds
On a track car, only one fan is needed and no extra shrouds. We use one OEM fan and call it a day. Any extra shrouding actually inhibits high air flow mass at higher speeds on cars with adequate ducting. There is a sort of minimum air flow mass required to cool a high hp track car. Add full coverage shrouds for low speed, light load street cooling problems and you are handicapping high speed, high load airflow. On cars that are more street oriented, have A/C and big power, fans can help bandaid airflow enough to keep it alive if it never goes on track. If that same car that requires massive dual fans to survive on the street ever gets driven in anger on the track.. it’s a better idea to ditch the shrouds, start cutting up the hood and improve ducting through the nose. You will rarely see fans and full coverage shrouds on a purpose built racecar unless it's an offroad car where low speeds and debris are concern for an externally mounted core."
I'm going to give it a shot and keep an eye on the coolant temp.
#8
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I doubt that one OEM fan is going to cut it given that BOTH OEM fans should activate when the coolant exceeds a certain threshold, regardless of whether or not the A/C is ON (that's how my MSM fans worked before switching to the TSE radiator and single MASSIVE SPAL fan).
I certainly wouldn't be tracking the car with a single OEM fan, you'll blow your radiator cap as soon as you pull into the pits because there's no way that single OEM fan will suck enough air through your radiator to help shed heat from your coolant.
Also, you're in Texas - it gets F'N hot there!
I certainly wouldn't be tracking the car with a single OEM fan, you'll blow your radiator cap as soon as you pull into the pits because there's no way that single OEM fan will suck enough air through your radiator to help shed heat from your coolant.
Also, you're in Texas - it gets F'N hot there!
#9
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Searched this extensively and couldn't find anything in detail. Just that the second fan is used for cars with AC and it comes on at a higher temp (unless modified).
Just upgraded to a Supermiata radiator and Qmax reroute. Beautiful parts!
The car has no AC and I want to go to a single OEM fan. To remove the AC fan (passenger side) can I just cut the wires, cap them off (epoxy heat shrink) and tuck them back in the harness? Or is it more involved than that?
Engine is a '99 1.8 with a Hydra EMS if that matters.
Thanks for any help!
Just upgraded to a Supermiata radiator and Qmax reroute. Beautiful parts!
The car has no AC and I want to go to a single OEM fan. To remove the AC fan (passenger side) can I just cut the wires, cap them off (epoxy heat shrink) and tuck them back in the harness? Or is it more involved than that?
Engine is a '99 1.8 with a Hydra EMS if that matters.
Thanks for any help!
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