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Transmission coolers

Discussion in 'Technical Chat' started by gearcruncher, Dec 30, 2017.

  1. Aug 5, 2018 at 7:17 AM
    #41
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    Sorry , i am a little late to the game here .
    You can remove the tiny factory cooler and place a larger one in its place . This will eliminate the additional hoses needed to plumb 2 coolers .
    As mentioned above , bigger is better . Considering your light coming on is not a good thing . Your fluid may be damaged .
    If you are crawling on a constant basis , i would even suggest a fan to assist with air flow
     
    TWENTYCO likes this.
  2. Aug 5, 2018 at 6:32 PM
    #42
    uncleART

    uncleART Well-Known Member

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    Thank you for getting back to me & for the advice. I think I will add a fan as well. I’m also getting a flush on wed to replace the damaged fluid.
     
    gearcruncher [OP] likes this.
  3. Aug 7, 2018 at 12:32 AM
    #43
    gearcruncher

    gearcruncher [OP] Well-Known Member

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  4. Aug 7, 2018 at 5:25 AM
    #44
    fatfurious2

    fatfurious2 EAF YO

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    I want to replace my cooler with the tru-cool one. But I don't have the ability to drain the fluid and replace myself. Can i fill the cooler itself, and then connect to the hoses? Just delaying the drain/fill process, until I can find time to get it done.
     
  5. Aug 7, 2018 at 8:36 AM
    #45
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    Coolers hold very little fluid but that being said , when you open up the cooling lines , the converter cooling line is going to leak .
    If you can find a way to keep the lines from draining when you install the cooler , you should be good to go
     
    uncleART likes this.
  6. Aug 7, 2018 at 9:06 AM
    #46
    fatfurious2

    fatfurious2 EAF YO

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    Like pinching the line? I am not sure what you mean by converter cooling line
     
  7. Aug 7, 2018 at 9:12 AM
    #47
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    Yes, pinching the line will prevent the torque converter cooling line from draining . The cooling line going back to the transmission pan wont leak much but the converter cooling line will leak until the converter is completely drained unless you pinch the line or plug the line until you are finished hooking up the new cooler
     
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  8. Aug 7, 2018 at 5:34 PM
    #48
    uncleART

    uncleART Well-Known Member

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  9. Sep 18, 2018 at 2:59 PM
    #49
    bushman31

    bushman31 Well-Known Member

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    Old Man EMU suspension, 33" tires, 4.56 gears, Leer shell, airlift airbags, Fab 4's rear bumper and tire carrier, and some other shit.
    What are your thoughts of just adding a cooling fan to the stock cooler?
     
  10. Sep 19, 2018 at 4:21 AM
    #50
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    The factory aftercooler that comes with the tow package is fairly small .That being said , I am sure you could find a fan small enough to mount in front of it .
    Are you currently watching your transmission temps ?
    Locate a fan and give it a try and report back . I dont beleive anyone has tried this yet that I know of .
     
    bushman31 likes this.
  11. Sep 19, 2018 at 6:42 AM
    #51
    Scott B.

    Scott B. Well-Known Member

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    Realistically, the factory cooler is small. IMO, too small to support a fan.

    Don't forget, a pusher fan will block some airflow to the cooler. Parts of the cooler will have more airflow, but parts blocked by the fan will have less.
     
  12. Sep 24, 2018 at 6:11 AM
    #52
    bushman31

    bushman31 Well-Known Member

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    Old Man EMU suspension, 33" tires, 4.56 gears, Leer shell, airlift airbags, Fab 4's rear bumper and tire carrier, and some other shit.
    Thanks for the response guys. I do monitor my temps and have seen my TC temps go up to 210 deg. doing 80 mph on the hwy, not towing.
     
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  13. Sep 24, 2018 at 7:47 AM
    #53
    TWENTYCO

    TWENTYCO Tree top flyer

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    I’m super pleased with my Tru Cool, Low Pressure Drop replacement transmission cooler. Replacing the tiny factory cooler was all that was required to keep my temps low under all conditions. If I did a lot of crawling under load I’d maybe have to add a fan but so far it’s not required for trails, towing, and most off road driving, even at high altitudes.

    76EF0582-C5D5-4021-9689-413E7BB01B13.jpg
     
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  14. Sep 24, 2018 at 4:36 PM
    #54
    bushman31

    bushman31 Well-Known Member

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    Old Man EMU suspension, 33" tires, 4.56 gears, Leer shell, airlift airbags, Fab 4's rear bumper and tire carrier, and some other shit.
    I have read some info on the Tru-Cool and I am very interested in them. Is there any tutorials on installing a cooler. I am interested on the process of ensuring proper fluid level after with a larger cooler.
     
  15. Sep 24, 2018 at 7:05 PM
    #55
    teamhypoxia

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    gearcruncher [OP] and bushman31 like this.
  16. Sep 24, 2018 at 7:09 PM
    #56
    bushman31

    bushman31 Well-Known Member

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    Old Man EMU suspension, 33" tires, 4.56 gears, Leer shell, airlift airbags, Fab 4's rear bumper and tire carrier, and some other shit.
    Thank you very much.
     
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  17. Sep 25, 2018 at 7:42 PM
    #57
    TWENTYCO

    TWENTYCO Tree top flyer

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    I tried to find a good video showing the procedure of crimping the lines and filling up the replacement cooler but there wasn’t one I liked or could find quickly. There’s some other threads here that cover the process step by step though. I know that’s been addressed before and I’ve read it. Try searching specifics and you can probably find some details. I think the OP has perhaps even addressed this in other threads as well? I tried to read everything Gear Chruncher had posted about transmissions before choosing my path to upgrades and there’s just a LOT of info and details to read through.
     
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  18. Oct 23, 2018 at 1:38 PM
    #58
    chowwwww

    chowwwww Well-Known Member

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    Just ordered the 4454 finally. Wondering how much fluid I would need to add with cooler to top it off.
     
  19. Oct 23, 2018 at 1:43 PM
    #59
    fatfurious2

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    So i have the 4454, and noticed the other day, on the highway going 70 on a flat surface (no hill) that my temp was around 135. This was after driving for a few hours. The current air temp in Va is definitely getting cooler. I think it was around 50.

    Should i be concerned that its not around the normal 170s ? @gearcruncher
     
  20. Oct 23, 2018 at 1:53 PM
    #60
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    TRD Sport Rally -5 speed automatic Limited ,Factory heated leather seats ,chrome package,Super white with front windows tinted to 35 % Dick Cepek DC-2 wheels Summer tires - Good year silent armor P265/65R17 Winter tires - Good year P265/65R17 Ultra Ice studded Illuminated 4x4 switch TRD 3rd brake light cover ($20) TRD seat belt shoulder protectors (5). ($50) TRD ...B pillar emblems ($20) TRD rear slider sticker with devil horns ( $6) TRD summer floor matts ($60) TRD steering wheel emblem ($20) TRD floor pedals .($95) TRD shorty antenna ($14) TRD front Windshield emblems ($17) TRD head pillows .($60) TRD head rest protectors TRD door scuff protection $20 TRD floor matt emblems ($40) TRD tow plug emblem . ($40) TRD cigarette lighter with LED.($35) TRD tissue dispenser ($12) TRD front bezel emblems ($9) TRD door emblems ($6) TRD lanyards($9) TRD lisence plates with TRD bolts($50) TRD fender emblems TRD center caps Part Number:PT904-35070-CC ($80) TRD cd
    The 4454 uses a built in thermostat . If the fluid is cool , the thermostat remains closed and prevents fluid from travelling through the cooler passages . I wouldnt worry too much about overcooling unless the temps go to negative 40 .
    What are you using to monitor trans temps ?
     

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