Transmission Cooler Routing
April 27th, 2009, 04:12 PM
#1
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Transmission Cooler Routing
Hey,
I was wondering if anyone knows the optimal routing for a transmission cooler. I recently had my TH350 rebuilt with a shift kit and because the engine is mildly built I installed a 2100 stall converter.
I'm adding an aux cooler infront of the condenser and I've gotten confilcting cooling line configurations from various sources.
One shop told me to run the cooling lines through the aux cooler first, then through the radiator. I was told that this will ensures a more regulated ATF temperature and will cool the the engine a little bit as well.
The second routing I was told was to run the coolant through the radiator first, then through the aux cooler. I was told that this will cool the ATF more. This concerns me however, because I live in the NW and I don't want to cool the oil too much in the mornings.
Any suggestions? Is one better than the other?
I was wondering if anyone knows the optimal routing for a transmission cooler. I recently had my TH350 rebuilt with a shift kit and because the engine is mildly built I installed a 2100 stall converter.
I'm adding an aux cooler infront of the condenser and I've gotten confilcting cooling line configurations from various sources.
One shop told me to run the cooling lines through the aux cooler first, then through the radiator. I was told that this will ensures a more regulated ATF temperature and will cool the the engine a little bit as well.
The second routing I was told was to run the coolant through the radiator first, then through the aux cooler. I was told that this will cool the ATF more. This concerns me however, because I live in the NW and I don't want to cool the oil too much in the mornings.
Any suggestions? Is one better than the other?
April 27th, 2009, 11:01 PM
#2
is Fast Enough ...
Join Date: Jul 2008
Location: dogtown
Posts: 1,308
Hey,
I was wondering if anyone knows the optimal routing for a transmission cooler. I recently had my TH350 rebuilt with a shift kit and because the engine is mildly built I installed a 2100 stall converter.
I'm adding an aux cooler infront of the condenser and I've gotten confilcting cooling line configurations from various sources.
One shop told me to run the cooling lines through the aux cooler first, then through the radiator. I was told that this will ensures a more regulated ATF temperature and will cool the the engine a little bit as well.
The second routing I was told was to run the coolant through the radiator first, then through the aux cooler. I was told that this will cool the ATF more. This concerns me however, because I live in the NW and I don't want to cool the oil too much in the mornings.
Any suggestions? Is one better than the other?
I was wondering if anyone knows the optimal routing for a transmission cooler. I recently had my TH350 rebuilt with a shift kit and because the engine is mildly built I installed a 2100 stall converter.
I'm adding an aux cooler infront of the condenser and I've gotten confilcting cooling line configurations from various sources.
One shop told me to run the cooling lines through the aux cooler first, then through the radiator. I was told that this will ensures a more regulated ATF temperature and will cool the the engine a little bit as well.
The second routing I was told was to run the coolant through the radiator first, then through the aux cooler. I was told that this will cool the ATF more. This concerns me however, because I live in the NW and I don't want to cool the oil too much in the mornings.
Any suggestions? Is one better than the other?
Run as cool as you can it will be warm enough ...
On my current car I bypass the radiator and run through the largest cooler I could find . Could you do me a favor and ask what your people what they think of that routing ...
April 28th, 2009, 05:51 AM
#4
Here's a map of the cooler direction.
I would suggest spending the extra money and get the one with the fan and thermostat, running it too cool will do as much damage as running it too hot
I would suggest spending the extra money and get the one with the fan and thermostat, running it too cool will do as much damage as running it too hot
April 28th, 2009, 10:18 AM
#5
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Join Date: Apr 2008
Posts: 172
Cool, thanks for the suggestions and the diagram.
I made the mistake of buying a smaller cooler off the shelf at the part's store so I'm not sure I'm going to be able to completely bypass the radiator. As for an aux fan and thermostat, I may not have the room. The car has AC so there isn't much space left between the condenser and the horn set up. ...Not to mention that my funds are starting to sputter on this project!
The transmission shop said that the 2100 Stall is still pretty mild and that because it is still a full sized converter that it will run relatively cool. I wanted to add the cooler for a bit of an insurance policy I guess.
Think I'll run it like the diagram shows.
Thanks again guys!
I made the mistake of buying a smaller cooler off the shelf at the part's store so I'm not sure I'm going to be able to completely bypass the radiator. As for an aux fan and thermostat, I may not have the room. The car has AC so there isn't much space left between the condenser and the horn set up. ...Not to mention that my funds are starting to sputter on this project!
The transmission shop said that the 2100 Stall is still pretty mild and that because it is still a full sized converter that it will run relatively cool. I wanted to add the cooler for a bit of an insurance policy I guess.
Think I'll run it like the diagram shows.
Thanks again guys!
April 30th, 2009, 10:08 AM
#7
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Join Date: Jul 2008
Location: dogtown
Posts: 1,308
I'm in So.Cal. and the chance of running my tranny at too cool a temperature is slim ...
Still, I'd like to see something saying you can run at TOO cold a temperature...
aaaheatchrt.jpg
May 1st, 2009, 04:17 PM
#8
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I live up here in Washington State and it's not exactly warm let's say 9 months out of the year. I'm not sure if it's possible to cool the trans too much, but that's what the techs said and I'm inclined to listen. With as much money, time, blood, sweat, and tears as I have into this thing...I don't want to chance anything!
June 14th, 2009, 08:45 AM
#10
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Join Date: Jul 2008
Location: Manhattan, Illinois
Posts: 123
I have read that tranny fluid is designed to operate at 150- 210 degrees F for best flow. That is why they recommend running it to the radiator first to heat the fluid faster to allow proper flow. I noticed cold GM fluid in my 4L60E, prior to the change to Max ATF caused slipping. I run a aux cooler on a 94' Dodge Intrepid that is notoriouse for failing transmissions (the 42LE). A 30,000 GVW cooler does help keep the engine cool also.
Last edited by Wireman134; June 17th, 2009 at 07:26 AM.
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