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C15 Marine Cam

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Handy, Jun 16, 2019.

  1. Jun 16, 2019 #1
    Handy

    Handy Bobtail Member

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    Nov 14, 2018
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    I recently rebuilt my 6nz and decided to try the marine cam from highway heavy parts I was already using the c16 injector. I also tried the manifold and turbo from Full Tilt. The engine runs strong with 6–7 mpg. It seems to struggle below 1500 Rpm when I put my foot in it. Pulling a hill it seems ok to drop to 1300 but if I’m below 1500 and try add fuel it seems to bog down to the point where I back out of it.
     
    Handy, Jun 16, 2019
    Handy, Jun 16, 2019
    #1
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  3. Jun 16, 2019 #2
    Superhauler

    Superhauler TEACHER OF MEN

    12,209
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    keep stroking.
    0
    Those cams work well at 1500 rpm or above. 1300 is to low.
     
    Superhauler, Jun 16, 2019
    Superhauler, Jun 16, 2019
    #2
    Lalito.1234, magoo68 and BoxCarKidd Thank this.
  4. Jun 17, 2019 #3
    T800H

    T800H Medium Load Member

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    Apr 2, 2010
    The Keys
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    Can't speak for the 800 hp cam, But I have a 1000+ hp cam and never a problem.
     
    T800H, Jun 17, 2019
    T800H, Jun 17, 2019
    #3
  5. Jun 18, 2019 #4
    spsauerland

    spsauerland Road Train Member

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    You knocked on wood right?
     
    spsauerland, Jun 18, 2019
    spsauerland, Jun 18, 2019
    #4
    swaan and S M D Thank this.
  7. Jun 25, 2019 #5
    DieselTech_Aus

    DieselTech_Aus Light Load Member

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    Dec 20, 2017
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    C16 injectors are the same 10R8501 (2.8kg/m tip) as 6nz C15.

    the 800hp cam needs the borg warner non wastegate turbo to work best. they also don't work very efficiently at low RPM. I usually advise my clients to be changing down 1/2 gear by no lower than 1450rpm. ideally changing down just before 1500rpm as it pulls down.

    if you up the fueling with hot trims, or more ideally a larger injector it will be better.

    also low fuel pressure and boost leaks will really hurt low down performance. every boost hose should be double clamped and the CACsystem pass a leak test at at least 30psi. fuel pressure should be minimum 95psi low idle and over 100 at high idle

    FLS and FTS setting are another place you can assist with more power down low
     
    DieselTech_Aus, Jun 25, 2019
    DieselTech_Aus, Jun 25, 2019
    #5
    Lalito.1234, Navtech and swaan Thank this.
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