Transmission Cooler

[Mad_Trbo]

I have been looking around and I am curious to know the general rule of thumb related to transmission coolers.

It seems there are possibly some negative effects related to pressure. As I look to add a cooler do I need to be concderned about line size, cooler size or what?? Where do the problems tend to creep up.

Thanks for any information!

 

[DailyDrifter]

i just bought a tru-cool. its rated up to 28,000gvw, and has a stacked plate design. Pretty much the cooler the better. as fas as pressure goes, its a sealed system, there shouldn't be any problems with psi drop, but maybe someone with more knowledge can tell you better. The line is 5/16" and that is sufficient enough.

 

[Brer Rabbit]

I was told..

to stay away from tube and fin design. They are bigger but they dont cool as well as bar and plate designs. Info obtained by respected local trans builder.

 

[FORREST]

Cooler

Not to hijack you but, I"ve read somewhere there is a way to break a cooler
in.I don't remember it all but it was something about putting the axels on
jackstands and putting the trans. in rev. with motor running for a short time.
Otherwise the cooler will not cool at 100%. Anybody know about this?

 

[DailyDrifter]

yeah tube and fin blow. As far as breaking in a trans cooler, i worked at a tranny shop for a while and never heard anything about that. If thats so, do you have to break in a radiator?

 

[Sleeper-6]

I have heard that, but it had nothing to do with breaking in the cooler. I was told to do that on a fresh rebuild in case there was some junk left anywhere after the cooler was flushed out and the trans re-installed. Apparently if anything were to go through the hydraulic system there is the least chance of it getting hung up in the valve body if the trans is running in reverse. Once it's in the pan, I assume the filter should get it before it gets sucked back into the pump.