9MR Trans Cooler Complete & Data
EvoM Guru
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From: Tri-Cities, WA // Portland, OR
The water temp sensor uses the same sensor wire as the IAT sensor, and both are good up to 150C. The main difference is a sealed sensor for water vs an exposed sensor for air. A plot of the calibration data I put together on the IAT sensor is below. My MAT logging patch includes this calibration data, so once you've got the sensor wired into the fuel tank temperature circuit on the ECU, you're just one patch away from logging gearbox oil temperature.
Last edited by mrfred; Sep 5, 2012 at 02:38 PM.
Awesome work man. Thanks for sharing this, i always had Q how much oil cooler will help 6spds tranny.
So shep built you a tranny, is it different than OEM spec? i thought he only does it for OEM spec.
THank you
So shep built you a tranny, is it different than OEM spec? i thought he only does it for OEM spec.
THank you
The water temp sensor uses the same sensor wire as the IAT sensor, and both are good up to 150C. The main difference is a sealed sensor for water vs an exposed sensor for air. A plot of the calibration data I put together on the IAT sensor is below. My MAT logging patch includes this calibration data, so once you've got the sensor wired into the fuel tank temperature circuit on the ECU, you're just one patch away from logging gearbox oil temperature.
https://www.evolutionm.net/forums/ev...rans-6spd.html
MajicManRed does a great job of explaining the details. I believe I purchased the last set of that particular run of gears. So the gears 3,4,5 are not OEM. I know they do quite a bit of non OEM work, but I believe all the 'big' evo trans shops do.
I've taken my trans cooling a little further. I'm still testing what size hole I should use and the degree needed to get the most coverage.
https://www.evolutionm.net/forums/10307448-post40.html
https://www.evolutionm.net/forums/10307448-post40.html
The water temp sensor uses the same sensor wire as the IAT sensor, and both are good up to 150C. The main difference is a sealed sensor for water vs an exposed sensor for air. A plot of the calibration data I put together on the IAT sensor is below. My MAT logging patch includes this calibration data, so once you've got the sensor wired into the fuel tank temperature circuit on the ECU, you're just one patch away from logging gearbox oil temperature.


Any consideration for just ducting some air towards the transmission from the front bumper similar to brake ducts? I know the stock undertray tries to duct some air towards the transmission. I wonder if some 3" ducting towards the transmission from the front bumper would help.
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