Tranny cooler
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Joined: May 2002
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From: Denver
Tranny cooler
I got a radiator out of a 73 for automatic transmission, I put an AOD in the 72. The inlet and out let are on the bottom of the radiator and I do not know which is which, please help.
Thanks
Robert
72 F-100 Ranger XLT W 86 5.0L W/ AOD
www.geocities.com/krazdndenver
Thanks
Robert
72 F-100 Ranger XLT W 86 5.0L W/ AOD
www.geocities.com/krazdndenver
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Joined: Feb 2000
Posts: 5,130
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From: Brea CA
Tranny cooler
I knew somebody was gonna ask that question!
Honestly, I don't know how much but the cooler runs more efficiently hooked up that way. It has to do with the direction of flow in the cooler vs. the direction of flow in the radiator tank. Hooked up that way they run in opposite directions. This reduces the self-heating effect on the cooler, you want the hottest part of the cooler downstream and the coolest part upstream. That way when the cooler gives up heat in the radiator, it doesn't pass as much heat back over the cooler again because the hottest part is in the rear. Another way to think of it is the tranny fluid "sees" cooler radiator flow past it. I hope that makes sense, I had to visualize it for quite a while. All vehicles are plumbed this way. And yes, you always want to put an add-on cooler in the return line to the tranny.
Barry
Honestly, I don't know how much but the cooler runs more efficiently hooked up that way. It has to do with the direction of flow in the cooler vs. the direction of flow in the radiator tank. Hooked up that way they run in opposite directions. This reduces the self-heating effect on the cooler, you want the hottest part of the cooler downstream and the coolest part upstream. That way when the cooler gives up heat in the radiator, it doesn't pass as much heat back over the cooler again because the hottest part is in the rear. Another way to think of it is the tranny fluid "sees" cooler radiator flow past it. I hope that makes sense, I had to visualize it for quite a while. All vehicles are plumbed this way. And yes, you always want to put an add-on cooler in the return line to the tranny.
Barry
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From: Denver
Tranny cooler
This makes great sense, but now I need to know which is the in & out of the AOD. Can someone help me with this, I was planning on tring to plum the tranny this weekend?
Robert
Robert
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From: Denver
Tranny cooler
Thanks for the info, now I can get this plumed up and mabey even fire it up this weekend. It has been almost a year since I rebuilt that engine and put it in the truck
Robert
Robert
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Tranny cooler
I still don't get it, but mine's backward. I'm going to change it.
...and yes, out is at the front of the tranny ( on a C6 anyway ) closest to the pump. Return is to the rear.
...and yes, out is at the front of the tranny ( on a C6 anyway ) closest to the pump. Return is to the rear.
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