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Unread 01-04-2011, 10:01 AM   #1
theonlyMcG
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2008 KK Liberty 
 
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Transmission Cooler

So I have the 08 Sport that didn't come with the towing package. Since buying it I have put on the hitch and the wiring harness and before I actually tow anything I want to put a transmission cooler on it. What do you guys recommend as far as transmission coolers go? I was on etrailer and saw that there were some options but was wondering what experience you guys had with different options.

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Unread 01-04-2011, 11:57 AM   #2
tjkj2002
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Unless you have a manual trans you already have a trans cooler,standard on all KK's.Now it's a stand alone cooler that does have a hard time controlling temp spikes that can be seen with towing and offroading.


The best setup is to have a in-radiator trans cooler then looped to a AUX trans cooler before returning to the trans.Sadly there no option for a in-radiator trans cooler for a KK.
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Unread 01-04-2011, 06:04 PM   #3
SuperRliBerty
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Quote:
Originally Posted by tjkj2002 View Post
Unless you have a manual trans you already have a trans cooler,standard on all KK's.Now it's a stand alone cooler that does have a hard time controlling temp spikes that can be seen with towing and offroading.
The transmission cooler on the KJ and KK is very inefficient. this is a pic of the trans cooler on my KK. Only one row of cooling fins
01041958.jpg   01041959.jpg  
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Unread 01-04-2011, 06:08 PM   #4
SuperRliBerty
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Quote:
Originally Posted by tjkj2002 View Post
The best setup is to have a in-radiator trans cooler then looped to a AUX trans cooler before returning to the trans.Sadly there no option for a in-radiator trans cooler for a KK.
This is a more efficient way of cooling the trans fluid
116_0412_04_z-transmission_cooler-diagram.jpg  
transmission-cooler-animated.gif

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Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
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Unread 01-04-2011, 06:25 PM   #5
SuperRliBerty
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An efficient way is to upgrade to a larger cooler and install a cooling fan.
mishimoto-transmission-cooler.jpg  
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2008 Sport Liberty
Cold air intake*Trush (magnaflow) turbo muffler* Hypertech power program*
Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
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Unread 01-04-2011, 07:31 PM   #6
tjkj2002
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Quote:
Originally Posted by SuperRliBerty View Post
An efficient way is to upgrade to a larger cooler and install a cooling fan.
Now you don't want to overcool your trans,well not one in a new Jeep as the TCM will limit it going into OD and such till the fluid temps are in the normal operating range.


Oh and any KJ with the 45RFE trans has a very efficient trans cooler compared to KJ/KK's with the 42RLE trans.
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Unread 01-04-2011, 07:40 PM   #7
SuperRliBerty
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Quote:
Originally Posted by tjkj2002 View Post
Now you don't want to overcool your trans,well not one in a new Jeep as the TCM will limit it going into OD and such till the fluid temps are in the normal operating range
for long distance, full max towing I would upgrade,

the KJ also uses a double row Trans cooler though...
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2008 Sport Liberty
Cold air intake*Trush (magnaflow) turbo muffler* Hypertech power program*
Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
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Unread 01-04-2011, 07:53 PM   #8
tjkj2002
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Quote:
Originally Posted by SuperRliBerty View Post

the KJ also uses a double row Trans cooler though...
Not a KJ with the 45RFE trans('02 and very early '03's).
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Unread 01-05-2011, 12:50 PM   #9
KISSlover101
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I installed a B&M transmission cooler in my 08 KK

EDIT: http://www.amazon.com/70268-SuperCooler-Automatic-Transmission-Cooler/dp/B000CIGE9G/ref=sr_1_1?s=automotive&ie=UTF8&qid=1294257230&sr=1-1
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Unread 01-05-2011, 03:52 PM   #10
SuperRliBerty
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Quote:
Originally Posted by tjkj2002 View Post
Not a KJ with the 45RFE trans('02 and very early '03's).

The "Bar" type Trans cooler is a bit more efficient than the :tube and fin" trans cooler.
This is the KJ trans cooler.
img_x1114.jpg  
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2008 Sport Liberty
Cold air intake*Trush (magnaflow) turbo muffler* Hypertech power program*
Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
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Unread 01-05-2011, 03:53 PM   #11
SuperRliBerty
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[QUOTE=KISSlover101;10733013]I installed a B&M transmission cooler in my 08 KK


After the install did you check the fluid level?
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2008 Sport Liberty
Cold air intake*Trush (magnaflow) turbo muffler* Hypertech power program*
Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
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Unread 01-05-2011, 06:05 PM   #12
tjkj2002
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Quote:
Originally Posted by SuperRliBerty View Post
The "Bar" type Trans cooler is a bit more efficient than the :tube and fin" trans cooler.
This is the KJ trans cooler.
The 45RFE KJ's use a in-radiator trans cooler,better then any stand alone cooler.
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