Transmission Cooler Options 2018 F150
Senior Member
Joined: Sep 2017
Posts: 2,229
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From: Louisiana
Oh man, I feel like you're spying on me! We operate 2,000hp - 4,000hp natural gas-fired engines, most of which are two-strokes. This article discusses Mobil Serv analysis which we use, as well as, "Maintaining an oil temperature of over 65.5ºC can also limit this chemical process, with even better results for oil temperatures over 71ºC." which is 150-160 degrees F. I guess that's why we control oil inlet temp at 150, outlet temp is usually 8-10 degrees higher. Anywho, thanks for taking the time to look up both articles and share. Getting the engine oil temps up to cook off moisture seems to make sense for long intervals.
Sorry to thread-jack... my stuff above doesn't provide anything meaningful to the trans cooler question. w00t's observation about an internal bypass is intriguing. Makes me wonder how Ecks' temps stayed so low with just a cooler swap. Are there multiple locations to measure fluid temp? I feel like I remember seeing two different temps when scrolling through the Ngauge but I can't look right now.
Sorry to thread-jack... my stuff above doesn't provide anything meaningful to the trans cooler question. w00t's observation about an internal bypass is intriguing. Makes me wonder how Ecks' temps stayed so low with just a cooler swap. Are there multiple locations to measure fluid temp? I feel like I remember seeing two different temps when scrolling through the Ngauge but I can't look right now.
5 Year Member
Joined: Sep 2012
Posts: 2,092
Likes: 812
From: S.TX.
Sorry to thread-jack... my stuff above doesn't provide anything meaningful to the trans cooler question. w00t's observation about an internal bypass is intriguing. Makes me wonder how Ecks' temps stayed so low with just a cooler swap. Are there multiple locations to measure fluid temp? I feel like I remember seeing two different temps when scrolling through the Ngauge but I can't look right now.
...or just Dave
Joined: Nov 2019
Posts: 285
Likes: 300
From: East-Central Illinois
Do you recall how hot your transmission would get on some of your hottest 1/4 mile passes? And did I see somewhere that you just had your transmission overhauled? What all did they swap? Are you racing it this weekend?
5 Year Member
Joined: Sep 2012
Posts: 2,092
Likes: 812
From: S.TX.
oh, duh... my bad LOL. Does your new fan run constantly or did you put it on a switch? Looks like a pretty serious little kit. I may go this route in order to help my stock 10r80 last a little longer when I get the Whipple.
Do you recall how hot your transmission would get on some of your hottest 1/4 mile passes? And did I see somewhere that you just had your transmission overhauled? What all did they swap? Are you racing it this weekend?
Do you recall how hot your transmission would get on some of your hottest 1/4 mile passes? And did I see somewhere that you just had your transmission overhauled? What all did they swap? Are you racing it this weekend?
Trans temps would typically get to about 205-210*f after 1/4 mile passes. Ofcourse that's letting it cool down between runs. Hottest was maybe ~215(ish).
I just replaced my clutches and valve body after 23k hard boosted miles. Trans started slipping pretty early on once I started pulleying down. After seeing how easily the clutch material scratches off I can see how these valve bodies could get blockage pretty easily.
Weather has been crappy here since I got the trans rebuilt so I haven't even had a chance to get on it yet but i'll be at Coyote Shootout this weekend. We'll see how she does. I'll be aiming for mid 10's this season.
5 Year Member
Joined: Aug 2018
Posts: 9,077
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From: Kentucky
What would you consider up to temp? I suppose I could always mock up some sort of cover plate to block off some airflow to the trans cooler while daily driving. That may allow it to heat up a bit more.
For racing though, every performance/transmission shop I've talked to said these 10R80's burn up fluid and clutches once you start throwing big power at them and trans coolers are basically a requirement to keep them alive longer.
For racing though, every performance/transmission shop I've talked to said these 10R80's burn up fluid and clutches once you start throwing big power at them and trans coolers are basically a requirement to keep them alive longer.
The higher the temp, the quicker water will evaporate. I aim for oem design temp as my M-F driving rarely makes it to temp. 203º appears to be where the thermostatic valve tries to pin the temp, I'm happy with keeping it there. Got a Raptor cooler on the way to kill off the short trips past 203ºF when medium locally. I plan to parallel plumb the old cooler with a remote thermostatic valve that opens 212-233ºF for heavy trips through the mountains.
You could use an external thermostatic valve to suit your daily driving. Improved Racing has a 180-203ºF thermostat that would somewhat mimic the oem unit. Plumb it in parallel with a manual oil control valve and you can get max flow with the turn of a ****.
Thread Starter
Junior Member
Joined: Sep 2020
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oh, duh... my bad LOL. Does your new fan run constantly or did you put it on a switch? Looks like a pretty serious little kit. I may go this route in order to help my stock 10r80 last a little longer when I get the Whipple.
Do you recall how hot your transmission would get on some of your hottest 1/4 mile passes? And did I see somewhere that you just had your transmission overhauled? What all did they swap? Are you racing it this weekend?
Do you recall how hot your transmission would get on some of your hottest 1/4 mile passes? And did I see somewhere that you just had your transmission overhauled? What all did they swap? Are you racing it this weekend?
