What do you guys think about the OEM transmission cooler that sits under the turbo? The one that is on mine is disconnected & I am wondering should I replace it with something else?

 

its more of an heat exchanger. its purpose is to heat up the trans fluid in the colder months. I don't think it cools at all so unless if you live in a really cold climate it is not needed.

 

Just remove it like Zach said ( unless you live in a cold climate ). I have been debating taking mine out, it makes it easier to fit in a bigger down pipe and if you want to put twin turbos on it is in the way.

 

um well if the tranny fluid gets hotter than the engine coolant, would it then not cool the tranny? By my gauge, that happens ALOT!

 

how much can it really cool though its not like there is a ton of surface area in the thing that will lead to cooling. What is the avg. water temp of our trucks?

 

I do live in upstate N.Y. & it does get cold!! Any one got a good source for a good heat exchanger? I would think it would act like the heat exchanger in the bottom of the radiator on the gas motors.

 

A fluid to fluid heat exchanger will always be more efficient than a fluid to air given the same footprint.
And everyone's right, when the transmission fluid's cold, that heat exchanger provides the heat required to bring the fluid up to a minimum operating temperature (REF: Granny creeping to church, pot of peas on the front seat, and it's 17*F outside). When the trans is really loaded (REF: apwatson50), should the fluid get hotter than the engine coolant, then the heat exchanger acts as a very good cooler.

Exactly. Those would be considered a cute mini version of what we have.

 

water removes heat more than 4 times better than air. The specific heat of water is 1 and the specific heat of air is .24

There are other factors of course, but like BC said.... liquids are much much better as a thermodynamic fluid.

 

THANKS guys!!
Does any one have a good one they want to part with. If you do PM me.

 

Old threads are your friends:

https://www.dieseltruckresource.com/...hlight=3924018

 

Awsome site..


I hate for my first post to be a dumb question....But I have been told that when these " Heat exchangers " get old and go bad...that they Mix the fluids ??


I have a 12v and am putting it into a ford Crewcab with a 47rh trans ....I was going to eliminate the factory cooler,and just go with an aftermarket- air to air , due to what I was told about the mixing issues ??



Can anyone give me an educated opinion about the reliablity of these factory units ?? Mine seams to be in excelent condition , on the outside


Thanks

 

They can leak internally but usually what fails is the nipples for the heater hoses rot off or the outer case springs a leak near the weld. I would not take it out out of fear that it will fail internally.