Transmission cooler in radiator? needed? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 05-03-2007
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Transmission cooler in radiator? needed?

I got this idea from Chad(casfz1) about running 2 stock tranny coolers in series, thought it was a decent idea since the tranny runs so hot.

But my theory on why it runs so hot is that it runs though the radiator that has 1** and some odd temperature coolant running though it so if anything its heating it up warmer! If I cruise down the highway at a constant speed when the radiator gets good air flow the tranny runs at 150* but when im in town driving around and the efan has not kicked on yet the water temp goes up and so does the tranny to 180*+ Once the tranny is running at 180*+ is shift like crap and I'm sure its not good on it.

So anyone know why it is ran into the radiator? Whats the purpose? Is it needed?
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Old 05-03-2007
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I had heard that part of it was to warm the fluid for cold weather operation since auto trannies don't like to run when the fluid is extremely cold either.
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Old 05-03-2007
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dont think it will heat up enough on its own? I'm thinking it will unless its like 10* or colder out...
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Old 05-03-2007
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They run it in the radiator like that for ease of install. If you really want to take care of your trans. Do what I did on my old truck, run a 25,000LB GVW trans cooler. I towed my boat with it up and down hills and on 5 hour plus trips with no problems for 160,000 miles. Its was worth every penny.....
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Old 05-03-2007
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I'm going to the junk yard first... but if they want to much..

http://cgi.ebay.com/ebaymotors/Hayde...10143781QQrdZ1

hehe
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Old 05-03-2007
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i added a B&M tranny cooler to mine....i need to find out if i have it on the output line in the radiator or if it goes through the cooler 1st then to the radiator........i have been thinking about adding a second cooler to it for extra cooling......during the summer with the cooler mine gets up to around 180* (granted i take temp readings from the line by the radiator right now)....

my brother is running only an external cooler on his 500HP '79 F-150 with a C-6.....granted it is 1.5" thick and 11"x20"......
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Old 05-03-2007
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Quote:
Originally Posted by zabeard
I'm going to the junk yard first... but if they want to much..

http://cgi.ebay.com/ebaymotors/Hayde...10143781QQrdZ1

hehe
Zack,

I would go that route, as I said with my old truck, it worked wonders for the trans...
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Old 05-03-2007
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next 1 i get is going to be a combo cooler (engine oil and tranny fluid)
http://store.summitracing.com/partde...5&autoview=sku
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Old 05-03-2007
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Quote:
Originally Posted by lifted97ranger
next 1 i get is going to be a combo cooler (engine oil and tranny fluid)
http://store.summitracing.com/partde...5&autoview=sku
Thats a good idea, I should probably get an engine oil cooler with all the towing I do....
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Old 05-03-2007
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for the price of that combo cooler and what comes with it, you cant beat that!
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Old 05-03-2007
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Quote:
Originally Posted by lifted97ranger
for the price of that combo cooler and what comes with it, you cant beat that!
Hell yeah, thats a good deal for sure. I just wonder what kind of cooler I need, since I only need it for engine oil. (manual trans)
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Old 05-03-2007
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Quote:
Originally Posted by greygooseranger
Hell yeah, thats a good deal for sure. I just wonder what kind of cooler I need, since I only need it for engine oil. (manual trans)
you could get this oil cooler:
http://store.summitracing.com/partde...rt=DER%2D15502

but for the price of that dual cooler, i would get it and just loop the oil back into the other side of it and then back to the engine.......
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Old 05-03-2007
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with any aftermarket cooler, you get about 1/2 to 1 quart more fluid in whatever you are cooling also......
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Old 05-03-2007
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idk i think an oil cooler is over kill, its not really needed. if you change your oil when you are suppose to there should be no problems.

i used to tow a lot, so far i have yet to see too many people tow with their ranger more then i did.
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Old 05-03-2007
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I added a large aftermarket cooler to my truck this past summer. If I remember, it measures out to something like 11"x11"x3/4". It makes a huge difference in temperature just by feeling those steel lines running under the radiator. When I tow, the line coming from the trans is so hot, I can't hold my hand on it for long. The other line coming from the coolers is almost air temp.

This is the way mine is hooked up:
Trans --> Radiator --> Factory Aux. Cooler --> Aftermarket Cooler --> Trans

I got this cooler at Napa. Supposedly, the "stacked plate" style coolers are more efficient than the rugular tube-and-fin style coolers.

Here's a pic of my wife helping me install the cooler.
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Old 05-03-2007
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Quote:
Originally Posted by zabeard
idk i think an oil cooler is over kill, its not really needed. if you change your oil when you are suppose to there should be no problems.

i used to tow a lot, so far i have yet to see too many people tow with their ranger more then i did.
It couldn't hurt, I tow 5500 pounds allot. Maybe I will reconsider, IDK.
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Old 05-03-2007
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Quote:
Originally Posted by seminaryranger
I added a large aftermarket cooler to my truck this past summer. If I remember, it measures out to something like 11"x11"x3/4". It makes a huge difference in temperature just by feeling those steel lines running under the radiator. When I tow, the line coming from the trans is so hot, I can't hold my hand on it for long. The other line coming from the coolers is almost air temp.

This is the way mine is hooked up:
Trans --> Radiator --> Factory Aux. Cooler --> Aftermarket Cooler --> Trans

I got this cooler at Napa. Supposedly, the "stacked plate" style coolers are more efficient than the rugular tube-and-fin style coolers.

Here's a pic of my wife helping me install the cooler.
which line did you put it in, the line that goes into the top of the radiator or the bottom line?
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  #18  
Old 05-03-2007
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why not something like this?

http://cgi.ebay.com/ebaymotors/DERAL...pagenameZWD10V

i mean, can you upgrade to a bigger trans cooler with a fan, and just replace the stock on all together?
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Old 05-03-2007
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Quote:
Originally Posted by Gay-briel
why not something like this?

http://cgi.ebay.com/ebaymotors/DERAL...pagenameZWD10V

i mean, can you upgrade to a bigger trans cooler with a fan, and just replace the stock on all together?
i don't think there is enough room in front of the radiator to put one with a fan........the fan would only be helpful when you were in stop and go traffic......

if you eliminate the stock 1 all together, then you need a LARGE cooler to do the job of the stocker and an aftermarket......
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Old 05-03-2007
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When the transmission is cold it will not flow fluid in to the cooler. As it has a thermostat just like the engine.


I cant see the radiator providing much cooling. Add an after market cooler and a temp gauge. If you really like over kill and total control, get one with a fan you can turn on.
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Old 05-03-2007
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Quote:
Originally Posted by seminaryranger
I added a large aftermarket cooler to my truck this past summer. If I remember, it measures out to something like 11"x11"x3/4". It makes a huge difference in temperature just by feeling those steel lines running under the radiator. When I tow, the line coming from the trans is so hot, I can't hold my hand on it for long. The other line coming from the coolers is almost air temp.

This is the way mine is hooked up:
Trans --> Radiator --> Factory Aux. Cooler --> Aftermarket Cooler --> Trans

I got this cooler at Napa. Supposedly, the "stacked plate" style coolers are more efficient than the rugular tube-and-fin style coolers.

Here's a pic of my wife helping me install the cooler.

nice man, have a part number and price on that sucker? btw i wish i had a woman to help install mods on the truck
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  #22  
Old 05-03-2007
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Quote:
Originally Posted by Blhde
When the transmission is cold it will not flow fluid in to the cooler. As it has a thermostat just like the engine.


I cant see the radiator providing much cooling. Add an after market cooler and a temp gauge. If you really like over kill and total control, get one with a fan you can turn on.

sweet that is good info, im disconnecting it from the radiator then
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  #23  
Old 05-03-2007
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im with Zach on the whole i wish i had a woman that unstood me enuff to wanna help with the truck
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Old 05-03-2007
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the one seminary ranger showed- thats the same size the tranny guy put on my s-10. he bypassed the radiator completely and this unit handles all the coolong. It's mounted to the front of the radiator (no a/c condensore on this truck). The e-fan pulls plenty of air through both it and the radiator. I can put my hand on it and feel the air getting sucked in. Being on the outside, it's getting cool freash air. Not air heated by the radiator.

I ripped the factory oil cooler lines off the s-10. Thats how I feel about them. Just another potential leak down the road.
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  #25  
Old 05-04-2007
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I can't remember the part number, but I do remember that it was a Hayden brand. I paid about $40 for it.

The reason I got it was because it was able to just bearly squeeze between the A/C condensor and the metal support that runs behind the grill.

I do a lot of slow speed driving checking cattle pastures, I tow occasionally, and of course some mud here and there. The cooler provides some nice peace of mind.
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