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Transmission cooler bypass Actuator

Discussion in 'Towing & Hauling' started by ZPMAN, Jan 9, 2025.

  1. Jan 9, 2025 at 8:20 PM
    #1
    ZPMAN

    ZPMAN [OP] 2nd place is the 1st looser

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    I finally finished it and did a short test on it this afternoon, with a flick of a switch I brought my trans temp down from 181° to 161°. Will do some more testing tomorrow if time permits. No more pinning the bypass this summer :)

    20250108_143402.jpg


    20250108_163543.jpg

    20250108_163612.jpg


    20250109_220828.jpg
     
  2. Jan 9, 2025 at 8:21 PM
    #2
    helidave

    helidave Hellacopter

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    Cool idea. More pics & details of the actuator?
     
  3. Jan 9, 2025 at 8:27 PM
    #3
    ZPMAN

    ZPMAN [OP] 2nd place is the 1st looser

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    Tomorrow will do, I'm all worn out.
     
    helidave[QUOTED] likes this.
  4. Jan 10, 2025 at 4:40 AM
    #4
    Silver17

    Silver17 Used, but returned and sold as new member

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    Looking forward to the details. :popcorn:
     
  5. Jan 10, 2025 at 4:58 AM
    #5
    bflooks

    bflooks New Member

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  6. Jan 10, 2025 at 3:25 PM
    #6
    ZPMAN

    ZPMAN [OP] 2nd place is the 1st looser

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    Ok got to do a little testing, I started out with the bypass Actuator engaged this is what my temps were after 12 miles of highway @ 80 mph.

    20250110_123420.jpg

    Thease are the temps with unit disengaged, after 12 miles @ 80 mph. The outside temp was 23°F

    20250110_124214.jpg

    Basically it is just a Mini Motion Actuator attached to 17mm 1/2 socket with some machining and three Allen set screws. Everything has to be aligned properly to avoid clearances with the transmission shifting mechanism. The actuator is somewhat waterproof (IP54) and will see how long it lasts in the rust belt. Picture below is of the first unit that I made up.

    20250110_130650.jpg
     
    Mdl likes this.
  7. Jan 10, 2025 at 3:30 PM
    #7
    Mdl

    Mdl Hey there...

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    Nice ingenuity! Would be great if we could swap in a 165 deg thermostat in the stock housing.
     
  8. Jan 10, 2025 at 5:17 PM
    #8
    ZPMAN

    ZPMAN [OP] 2nd place is the 1st looser

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    Or just trim the spring?
     
    Mdl[QUOTED] likes this.
  9. Jan 10, 2025 at 6:41 PM
    #9
    Mdl

    Mdl Hey there...

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    Haha. I would like to experiment but I yanked the warming puck and thermostat off and ran it straight to the cooler.
     
  10. Jan 10, 2025 at 7:07 PM
    #10
    centex

    centex New Member

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    So I gotta ask the obvious question here. Why this and not just pin it?
     
  11. Jan 10, 2025 at 7:36 PM
    #11
    Mdl

    Mdl Hey there...

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    Cause it gets cold in Minnesota? :D
     
  12. Jan 10, 2025 at 10:05 PM
    #12
    ZPMAN

    ZPMAN [OP] 2nd place is the 1st looser

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    4" lift, 35s, Magnuson Supercharger
    Summer temperature varies alot in Minnesota, weekend racing, occasionally towing and worked at a transmission shop a few years and don't like the smell of burnt trans fluid.

    Screenshot_20240922_083557_Gallery.jpg

    20240823_095244.jpg
     
    koditten and Mdl like this.

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