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12.7 Horsepower increase

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by LB9900i, Apr 8, 2020.

Page 3 of 3
  1. Apr 15, 2020 #21
    LB9900i

    LB9900i Bobtail Member

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    Apr 8, 2020
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    What's the % of loss between crank hp and wheel hp? Around 15%??
     
    LB9900i, Apr 15, 2020
    LB9900i, Apr 15, 2020
    #21
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  3. Apr 15, 2020 #22
    410Trucker

    410Trucker Bobtail Member

    16
    3
    Apr 14, 2020
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    Actually, no! I cracked 850° on the dyno, but usually stay around 750° on my daily use. I haven't had the pleasure of driving it since the new cam was installed.
     
    410Trucker, Apr 15, 2020
    410Trucker, Apr 15, 2020
    #22
  4. Apr 15, 2020 #23
    410Trucker

    410Trucker Bobtail Member

    16
    3
    Apr 14, 2020
    0
    It was 686/7874 to the ground...so roughly 15-16% drivetrain loss.
     
    410Trucker, Apr 15, 2020
    410Trucker, Apr 15, 2020
    #23
  5. Apr 15, 2020 #24
    LB9900i

    LB9900i Bobtail Member

    14
    1
    Apr 8, 2020
    0
    You don't think the OEM pistons will hold up?
     
    LB9900i, Apr 15, 2020
    LB9900i, Apr 15, 2020
    #24
  7. Apr 15, 2020 #25
    410Trucker

    410Trucker Bobtail Member

    16
    3
    Apr 14, 2020
    0
    Honestly, I don't know. It was suggested to me to use PAI's high performance kits because it has coated monotherm pistons. But I haven't had the chance to do the research on them. I haven't heard anything bad. But my engine went back together because all the internals were in great shape.
     
    410Trucker, Apr 15, 2020
    410Trucker, Apr 15, 2020
    #25
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