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379 Transmission Issue

Discussion in 'Peterbilt Forum' started by 410Trucker, Jul 11, 2023.

Page 3 of 3
  1. Jul 13, 2023 #21
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    May 2, 2021
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    So you put in an 18918 trans, but pulled out a 2450 (WTF) clutch to put in a claimed 5500 (WTFx2)?

    Could you not get a RTLO25918? Or a 28918?

    Did that dyno print out come in Crayola?
     
    Big Road Skateboard, Jul 13, 2023
    Big Road Skateboard, Jul 13, 2023
    #21
    Last Call, Diesel Dave, Oxbow and 1 other person Thank this.
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  3. Jul 13, 2023 #22
    410Trucker

    410Trucker Bobtail Member

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    No, I'm not sure where Leon went. Hopefully, nothing bad. But, I have the dyno sheet to match what I said. The clutch came from Pittsburgh Power. I got the 2450 clutch from them a few years ago, too.
     
    410Trucker, Jul 13, 2023
    410Trucker, Jul 13, 2023
    #22
  4. Jul 13, 2023 #23
    410Trucker

    410Trucker Bobtail Member

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    I can see how intelligence isn't necessarily your strong suit which makes discussions like these hard to understand...
     
    410Trucker, Jul 13, 2023
    410Trucker, Jul 13, 2023
    #23
  5. Jul 13, 2023 #24
    410Trucker

    410Trucker Bobtail Member

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    My engine is now a DDEC IV. It was converted before I brought it & Detroit Diesel confirmed it. She makes 686 to the ground, but that could be slightly off due to the clutch I had. Screenshot_20221215_142302_Gallery.jpg
     
    410Trucker, Jul 13, 2023
    410Trucker, Jul 13, 2023
    #24
    Jubal Early Times Thanks this.
  7. Jul 13, 2023 #25
    410Trucker

    410Trucker Bobtail Member

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    650 flywheel or 650 to the ground? I know I called Kentucky Klutch & they recommended their clutch. But, it was $1300 more than Pittsburgh Power.
     
    410Trucker, Jul 13, 2023
    410Trucker, Jul 13, 2023
    #25
  8. Jul 13, 2023 #26
    410Trucker

    410Trucker Bobtail Member

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    Apr 14, 2020
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    Oh, I understand. I double checked about reliability before I told them to leave it as it was. Now, I know I can't HOLD the torque as long as the bigger Cats & Cummins engines. But, I still made the power. I had a 13spd at the time they dyno'd it. I believe they ran it in 11th, which is 1:1 for that transmission.
     
    410Trucker, Jul 13, 2023
    410Trucker, Jul 13, 2023
    #26
  9. Jul 25, 2023 #27
    Deezl Smoke

    Deezl Smoke Medium Load Member

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    Feb 12, 2011
    Hillsboro Oregon
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    Does it chatter when off the throttle too, or just under power?
     
    Deezl Smoke, Jul 25, 2023
    Deezl Smoke, Jul 25, 2023
    #27
  10. Jul 25, 2023 #28
    Deezl Smoke

    Deezl Smoke Medium Load Member

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    Feb 12, 2011
    Hillsboro Oregon
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    I have'nt read any mention of checking the driveline phasing. Is the driveline in phase all the way back?

    When you swapped trans's, did anyone torque the output yoke, or check it for lash?
     
    Deezl Smoke, Jul 25, 2023
    Deezl Smoke, Jul 25, 2023
    #28
    Jubal Early Times Thanks this.
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