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S15 thermo fans - Hardtuned.net

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S15 thermo fans 

9 replies to this topic

#1 Brado_s13

  • Joined:14-January 15
  • Location:Australia NSW
  • Car:S13

Posted 15 January 2017 - 08:54 PM

Looking at putting thermo fans in to replace the stock fan, anyone know ideal temp for the sr20 for when fans kick in and turn off? If anyone has a thermo fan setup help a bro out

#2 ru55kj

  • Joined:21-January 06
  • Location:Australia NSW
  • Car:S15

Posted 16 January 2017 - 05:17 AM

I have couple of pics of my setup here http://nissansilvia....entry2088643849


My On temp set to 75, Off to 70.

The only reason for thermofans is to gain more room in front, perhaps for nicer cooler piping. There is literally no other benefits in doing it.

#3 blingcommander

  • Joined:05-October 06
  • Location:Japan
  • Car:Scooty-Puff Jr.

Posted 16 January 2017 - 08:23 AM

You want it hotter than that. 80-85 would be better. Needs to be higher than the thermostat opening temp

#4 pmod

  • Joined:13-May 10
  • Location:Australia NSW
  • Car:Fruity 180sx

Posted 16 January 2017 - 09:11 AM

View Postru55kj, on 16 January 2017 - 05:17 AM, said:

The only reason for thermofans is to gain more room in front, perhaps for nicer cooler piping. There is literally no other benefits in doing it.

Other reasons include:

1. Installing a mid-mount or W2A intercooler.
2. Better cooling at idle with the thermos running at full speed.
3. Better temperature control with a digital fan controller, assuming the thermo fan setup is capable of moving some serious CFM.

In saying all of that, I do somewhat agree with you, in so much as a reason is needed to justify the deviation from what is otherwise a functional and reliable oem cooling system.

#5 ru55kj

  • Joined:21-January 06
  • Location:Australia NSW
  • Car:S15

Posted 16 January 2017 - 10:00 AM

View Postblingcommander, on 16 January 2017 - 08:23 AM, said:

You want it hotter than that. 80-85 would be better. Needs to be higher than the thermostat opening temp

I have nismo low temp thermostat, I believe it opens at 62deg

#6 nicknack

  • Joined:01-December 11
  • Location:Australia NSW

Posted 16 January 2017 - 01:40 PM

Running so cool isn't that good. SR20s are designed to run at 83*c. I have any thermos and they're set so that the fan on the hot side of the engine comes on at 84 and the second kicks in at 87. Each fan switches off 4deg below it's on temp. This keeps temp around 82 for 90% of the time and avoids excessive cycling or battery draw

#7 ru55kj

  • Joined:21-January 06
  • Location:Australia NSW
  • Car:S15

Posted 16 January 2017 - 03:56 PM

View Postnicknack, on 16 January 2017 - 01:40 PM, said:

Running so cool isn't that good. SR20s are designed to run at 83*c. I have any thermos and they're set so that the fan on the hot side of the engine comes on at 84 and the second kicks in at 87. Each fan switches off 4deg below it's on temp. This keeps temp around 82 for 90% of the time and avoids excessive cycling or battery draw

I had separate control for fans too.

Do you have any ducting or air guides for the radiator or even
Undertray?

How stable is your temp around the track?

#8 ru55kj

  • Joined:21-January 06
  • Location:Australia NSW
  • Car:S15

Posted 16 January 2017 - 03:58 PM

Also in my setup the sensor is bolted to water neck - it's not water temperature sensor, so it's a little slower to react, that's why the temps are lower

#9 Brado_s13

  • Joined:14-January 15
  • Location:Australia NSW
  • Car:S13

Posted 16 January 2017 - 10:07 PM

Yeah it more for room in bay more them anything really, just needed to know the temps coz everyone tends to run different or have different opinions on things, but cheers guys appreciated 👌

#10 matth23

  • Joined:01-February 12
  • Location:Australia NSW

Posted 21 January 2017 - 11:10 AM

I used a Tridon thermo switch TFS140 (on 85 off 80) to trigger the fans in series, then switched to parallel for high when ac is on etc.





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