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2019+ Transmission Cooler

Discussion in '3rd Gen Tundras (2014+)' started by chasenicholas93, Jan 19, 2020.

  1. Jun 28, 2020 at 5:11 PM
    #511
    Ruggybuggy

    Ruggybuggy New Member

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    Well after my trip today I saw a max of 239F. This was only because i had to drive it in 4S to keep the torque converter locked up. As soon as i put it in 5S the TC would unlock and lock with headwinds and hills and temps climbed to 239. They would have gone higher if I didn't shift to 4S. Keeping it in 4S I was able to maintain 225F with outside temps 85F.

    In 4S
    Screenshot_20200628-152828.jpg

    20200628_145038.jpg
     
  2. Jun 28, 2020 at 5:45 PM
    #512
    East tn tundra

    East tn tundra New Member

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    After the kit in s5 mine never got over 190's pulling camper with truck bed loaded down to.
     
  3. Jun 28, 2020 at 6:19 PM
    #513
    Eaganite

    Eaganite New Member

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    That's great to hear! I towed my boat yesterday for the first time with the Tundra, probably about 4500 pounds + four adults. The truck handled it with ease but my tranny temps hit low 220s, that's a short trip (maybe 30 minuets max) with mid 80s ambient temp. When I travel up north with the boat and cargo (2.5+ hour drive) I'm sure my tranny temps would be very uncomfortable. Looking forward to the cooler kit and seeing temps as they should be.
     
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  4. Jun 28, 2020 at 11:26 PM
    #514
    Wallygator

    Wallygator New Member

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    Exactly the way it should be. Kit reserved/ordered, thanks Nicholas!
     
    stuckinohio likes this.
  5. Jun 29, 2020 at 6:15 AM
    #515
    Paulismydog

    Paulismydog New Member

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    How difficult is it to install this kit I? change my own oil and have done atf in my old truck. Thanks. Bob
     
  6. Jun 29, 2020 at 6:18 AM
    #516
    Ruggybuggy

    Ruggybuggy New Member

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    One being an oil change and ten being removing the engine and overhauling I would put this job at a four. The lines can be difficult to put in and some knowledge to get the atf level correct are needed.
     
    Last edited: Jun 29, 2020
    Wallygator likes this.
  7. Jun 29, 2020 at 7:43 AM
    #517
    Paulismydog

    Paulismydog New Member

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  8. Jun 29, 2020 at 7:52 AM
    #518
    chasenicholas93

    chasenicholas93 [OP] New Member

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    It is pretty straight forward. I include instructions as well.
     
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  9. Jun 29, 2020 at 8:05 AM
    #519
    chasenicholas93

    chasenicholas93 [OP] New Member

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    Instructions for installation are at the bottom of the 1st page of this thread.
     
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  10. Jun 29, 2020 at 8:55 AM
    #520
    sask3m

    sask3m New Member

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    Are the temps your reporting all with the thermostat pinned open?
     
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  11. Jun 29, 2020 at 10:05 AM
    #521
    Ruggybuggy

    Ruggybuggy New Member

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    I'm not sure why people are pinning the thermostat open. The thermostat is designed to open at a predetermined temperature to make sure the transmission gets up to temperature. If you forget to unpin it during the winter months you could end up with a cold running transmission.
     
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  12. Jun 29, 2020 at 10:20 AM
    #522
    Paulismydog

    Paulismydog New Member

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    Thank you
     
  13. Jun 29, 2020 at 10:33 AM
    #523
    blaserdude

    blaserdude New Member

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    none
    Mine is not pinned (Hayden 777) and it runs very cool ( pan stays around 186F). I don't know at what temp things would be considered too cool but I just don't see the need for more cooling.
    bc
     
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  14. Jun 29, 2020 at 11:18 AM
    #524
    East tn tundra

    East tn tundra New Member

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    No not pinned the thermostat opens earlier than 220 degrees like some said in earlier threads. You can feel the cooler getting hot at 170 degrees.
     
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  15. Jun 29, 2020 at 2:58 PM
    #525
    timsp8

    timsp8 Member

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    My hoses get hot around 195. I pinned mine a few days ago and it seems to get up to temp in the same amount of time and stays around 170-175. Before it was 185-195. I only pinned it to try it out. I’m going to undo it in the next few days and would only pin it in hot temps when towing a lot or a long distance.
     
  16. Jun 29, 2020 at 3:01 PM
    #526
    stuckinohio

    stuckinohio MGM Crue

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    People with 2018 or earlier pin the thermostat because the transcooler is integrated into the radiator.
    It is not a separated system meaning the radiator will act like a heat exchanger in some scenarios and further heat trans fluid instead of cooling.
    My truck has the integrated cooler and unpinned towing is never under 200. Operating temp is closer to 215 and peaks around 240 on hills
    This is too hot in my opinion. I pin during towing to maximize cooling.
    The retro-fit kit the OP is offering for 2019+ separates the systems so there is relatively no heat transfer between systems and the thermostat can manage trans temps without influence of the coolant temps.
    I ordered a cooler bracket so i can retrofit my 2018 to have a stand-alone cooler. Once installed i plan on letting the thermostat do its job (unpinned)
     
  17. Jun 29, 2020 at 4:38 PM
    #527
    1794-BlackTundra

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    This fella ran late, good thing it's here :yes:



    IMG_20200629_130210.jpg

    I'm super stoked! I'll install this kit once the 'warranty' expires... you know, as a celebration! A cooler truck it's a happy truck!
     
  18. Jun 29, 2020 at 4:38 PM
    #527
    Eaganite

    Eaganite New Member

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    Could you tell me what # Hayden cooler you have?
     
  19. Jun 29, 2020 at 4:49 PM
    #528
    Fearthisbeard

    Fearthisbeard New Member

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  20. Jun 29, 2020 at 5:04 PM
    #529
    East tn tundra

    East tn tundra New Member

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    I got the 778 the one that's in the kit. Post 339 is a picture of mine installed.
     
  21. Jun 29, 2020 at 5:46 PM
    #530
    Eaganite

    Eaganite New Member

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    Thanks for the info, checked #339 looks good!
     
  22. Jun 29, 2020 at 7:23 PM
    #531
    chasenicholas93

    chasenicholas93 [OP] New Member

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    Damn, that arrived super late. Sorry about that.
     
  23. Jun 29, 2020 at 8:00 PM
    #532
    1794-BlackTundra

    1794-BlackTundra New Member

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    No worries @chasenicholas93! I'm actually in Costa Rica, so there's an extra travel time from FL to here :thumbsup: Kit complete, worth the wait! :bananadance:
     
  24. Jun 29, 2020 at 9:36 PM
    #533
    Ruggybuggy

    Ruggybuggy New Member

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    I wouldn't mind a pdf of the bracket. Thanks
     
    Last edited: Jun 30, 2020
  25. Jun 30, 2020 at 4:20 PM
    #534
    sask3m

    sask3m New Member

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    It fits. :thumbsup: Only took a couple washers at the top to level it.

    20200630_170755.jpg
     
  26. Jun 30, 2020 at 4:58 PM
    #535
    Ruggybuggy

    Ruggybuggy New Member

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    Nice. It will be interesting to see what temps your running after you get it all plumbed up.
     
  27. Jun 30, 2020 at 5:18 PM
    #536
    sask3m

    sask3m New Member

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    What, you mean I'm not finished? :eek2:
     
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  28. Jun 30, 2020 at 6:35 PM
    #537
    Ruggybuggy

    Ruggybuggy New Member

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    Easy, your going to confuse some members. :D
     
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  29. Jul 1, 2020 at 4:54 PM
    #538
    jordoncloutier

    jordoncloutier New Member

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    Screenshot_20200701_170134_org.prowl.torque.jpg Just finished my install of my self made kit , just for a recap I purchased the cooler/thermostat assembly from eBay , bought continental 3/8 trans cooler hose locally , 10ft of heatshield Hose Sleeve from Amazon , , Toyota hose clamps and a Hayden 679 cooler .
    Went for my first initial spin with the thermostat unpinned . With an ambient temp of 16*C the trans took forever to even reach 83*C . This was the highest it got after a 30 minutes of highway driving . Will be towing this upcoming weekend . I will report back with my findings.
     
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  30. Jul 1, 2020 at 5:42 PM
    #539
    Ruggybuggy

    Ruggybuggy New Member

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    How many feet of the Continental hose did you end up using and where did you buy it? You have the same cooler kit I have coming. Do you think there is enough hose in the kit if the Toyota metal pipe is used from the thermosat?

    I'm heading home tomorrow from camping and ambient temps are going to 33C so it will be interesting to see what happens to the trans temps in stock form.
     
  31. Jul 1, 2020 at 6:24 PM
    #540
    Jorgy1

    Jorgy1 New Member

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    Do you happen to have a link for the hose heat sleeve you ordered?
     
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