[bartamos]

I've read all the posts I can find and want to know what is the in and out on a Aluminum radiator I bought . I see everybody talking about top and bottom. I'm guessing that on a bottom tranny cooling section of a radiator (ports on left and right) that it makes no difference as to where to hook in and out lines from tranny. It seems like it's just coiled tubing running thru the water. Not sure. Also, I may not even use this because many say that in hot climate (AZ) they by pass the Rad tranny cooler and just use Aux tranny cooler only.

[GypsyR]

There are a few different designs of internal coolers, some even look just like the external style coolers. No, there is no "In" or "Out" on a bottom cooler. It's position where water that has been cooled by the radiator flows over it. If you want to be really picky, you can put your inlet line on the same side of the radiator where the water from the engine enters it.
The radiator type cooler also serves to bring the trans fluid up to operating temperature quicker in cold weather. If you're pretty sure this is no issue where you live you can just run an external cooler. Almost all factory "extra cooling packages" I have seen that add an external trans cooler have it plumbed in conjunction with the internal cooler. This is how I always hook my external coolers up. I've never lived in the southwest though.

[Bryan59EC]

My 97 T-Bird has a stand alone cooler
Came that way from Ford
Just cannot remember where the cooler is in the 94 Bird
(Don't open the hoods that often)
Rest of the vehicles are manual trans

Bryan

[Henry Highrise]

All I am using on the car in my avitar is a stand alone cooler....works good.

[bartamos]

Thanks boys, but only one so far has answered the question. (in bold type). I know you are commenting on by-passing the Rad cooler and I appreciate that. But the real reason I posted was to find out if it makes a difference where I hook up an Aux cooler to a radiator with a bottom tranny cooler section. It has side by side ports not top and bottom. Don't know which one is in/out? Come back Bryan and Henry.

[roddinron]

It doesn't matter which one is in or out, it's just a tube running through HOT water. I'd still use a auxiliary cooler, on the return line. If I was in AZ I think I'd buy a large aux cooler and forget about the rad one.

[Crosley]

there is NO in & out on the aftermarket aluminum radiator cooler for the tranny.

Some OE applications run check valves in the tranny cooler systems..usually at the tranny case cooler fitting.

what are you building ?? What power train???


Or use only a large aux cooler....... I have done this for decades on my perf cars.

-----> AZ native

Originally Posted by bartamos

Thanks boys, but only one so far has answered the question. (in bold type). I know you are commenting on by-passing the Rad cooler and I appreciate that. But the real reason I posted was to find out if it makes a difference where I hook up an Aux cooler to a radiator with a bottom tranny cooler section. It has side by side ports not top and bottom. Don't know which one is in/out? Come back Bryan and Henry.