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Transmission Cooler Suggestions

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Sonofliberty92, Sep 22, 2022.

  1. Sep 22, 2022 at 10:17 AM
    #1
    Sonofliberty92

    Sonofliberty92 [OP] T O Y O T A

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    I'm planning on adding a transmission cooler to my truck as it doesn't have the tow package.

    For those running them, which should I go with? I heard B&M is a good choice.

    Also, should it bypass the radiator or run before or after it?
     
  2. Sep 22, 2022 at 10:27 AM
    #2
    nd4spdbh

    nd4spdbh Well-Known Member

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    Keep the radiator loop for proper warm up. Put the aux cooler after the radiator loop (this is how the tow package is setup).

    I have pondered replacing the stock small cooler with a bigger one and if i did id be going with a Hayden cooler with the internal thermostat/bypass

    https://www.haydenauto.com/media/9055/bypass-transmission-oil-cooler_flyer_2022.pdf

    No need for external fluid thermostat makes for a simple install.
     
    Sonofliberty92[OP] likes this.
  3. Sep 22, 2022 at 10:27 AM
    #3
    Dm93

    Dm93 Test Don't Guess

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  4. Sep 22, 2022 at 12:54 PM
    #4
    Stemmy

    Stemmy Certified Wombat Rancher

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  5. Sep 22, 2022 at 1:26 PM
    #5
    Sonofliberty92

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    Last edited: Sep 22, 2022
    Dm93[QUOTED] likes this.
  6. Sep 22, 2022 at 4:11 PM
    #6
    SCSPerformance

    SCSPerformance Stealth Custom Series™ Vendor

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    I actually keep the stock cooler and add the largest B&M cooler I could fit.
     
  7. Sep 23, 2022 at 10:44 PM
    #7
    PMK

    PMK Well-Known Member

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    Possibly I posted which part number cooler I installed, somewhere within these topics over the years.

    For mine, I had no need for running transmission fluid through the radiator to warm it up or get it real hot. Therefore, I installed a large dedicated transmission cooler.

    I left the radiator cooler portion drained and empty.
    The oem trailer towing package transmission cooler, I converted to a power steering fluid cooler.

    Has been this way for a long time, likely going towards ten years.

    Transmission fluid temps on the Scangage have shown typical 160*f to 165*f when warmed up and local driving. Worse case was likely around 175*f.

    Since the transmission cooler resides in front of the radiator and air conditioning condenser, the water temp shown on the scan gage is up typical 2*f to 4*f compared to without the after market transmission cooler. So coolant temp now normally runs at 188 to 190*f on the Scangage.
     
  8. Sep 23, 2022 at 10:54 PM
    #8
    nudavinci64

    nudavinci64 Robert @ Holy Horsepower

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    Boosted Money Pit....
    I just removed my stock one. should be in decent shape if you want it.
     
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  9. Sep 24, 2022 at 2:47 AM
    #9
    Sonofliberty92

    Sonofliberty92 [OP] T O Y O T A

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    I'll take it if you're giving it away. I don't mind paying the shipping for it lol
     
  10. Sep 24, 2022 at 10:30 AM
    #10
    nudavinci64

    nudavinci64 Robert @ Holy Horsepower

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    Boosted Money Pit....
    Message me. Honestly would prob just sit here.
     
  11. Sep 24, 2022 at 2:40 PM
    #11
    hoffengineering

    hoffengineering Well-Known Member

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  12. Sep 24, 2022 at 2:57 PM
    #12
    Sonofliberty92

    Sonofliberty92 [OP] T O Y O T A

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    What's a pain is, my lines are behind the rad where on a tow package truck, they would be out front.

    Did you have to add additional ATF?
     
  13. Sep 24, 2022 at 4:29 PM
    #13
    hoffengineering

    hoffengineering Well-Known Member

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    I did a full "flush" of the ATF when I installed the cooler and replaced most of the soft lines near the front of the truck.

    You can still access the lines on the back of the radiator pretty easily. Just replace the line for the ATF radiator outlet with some longer hose, plumb it to the cooler inlet, then plumb another new piece of line back to the ATF return hard line. My truck (with the tow package) has an intermediate hard fitting where the lines pass through the hood/upper radiator support sheet metal, but you can plumb soft lines through the same holes to the cooler without that intermediate hard line fitting. Just be careful that the soft lines can't contact the sharpish edges of the through hole in the sheet metal. If I were in your shoes I might use some hose mounts to position and support the soft lines.

    I also did away with the stock cooler mounts and just fab'd some from some angle aluminum, SS fasteners, and a few rubber grommets/washers to damp vibration.

    There is extra capacity, so you will have to add more ATF. It's a good idea to add some ATF then use the standard check method to make sure it's at the right level.
     
  14. Sep 24, 2022 at 5:13 PM
    #14
    PMK

    PMK Well-Known Member

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    When I did the install of my stand alone cooler, I also added a remote mounted spin on filter setup. Might be overkill, but all the fluid headed back to the transmission pan gets filtered.
     
  15. Sep 24, 2022 at 5:15 PM
    #15
    Sonofliberty92

    Sonofliberty92 [OP] T O Y O T A

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    I'm getting slightly intimidated by the job and have pondered getting my local mechanic to do it. I think I can figure it out though. Not sure which line will be send and return though. I ordered a scangauge today as well to help with temp readings in the future.
     
  16. Sep 24, 2022 at 9:22 PM
    #16
    hoffengineering

    hoffengineering Well-Known Member

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    Absolutely, that's a great idea. I have an inline filter for mine sitting on the shelf in my garage, just need to install it!
     
  17. Sep 24, 2022 at 9:28 PM
    #17
    hoffengineering

    hoffengineering Well-Known Member

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    It's not too tough at all. Removing the grill makes getting access to everything super easy. To mount it you can build a mount like I did to have it stand off from the A/C condenser or you can use the supplied ties to mount it right up against the A/C condensor (if the one you bought supplied ties, it should also have some rubber/foam tape too so that you don't have the cooler and A/C condensor rubbing metal on metal).

    I forget which line is feed and return for the stock radiator cooling circuit, but the info is here on TW (I think there are some pictures in the transmission flush thread, since you make use of those lines to do the flush). You could always unplug them both and turn the truck on for a sec and see which one spits out ATF lol.
     

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