rerate 370 to 525hp, cummins n14

Discussion in 'Trucks [ Eighteen Wheelers ]' started by killer120, Aug 27, 2016.

  1. killer120

    killer120 Light Load Member

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    Jul 1, 2013
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    that's true, the transmissions an rtlo 9 speed, only rated for 1650 torque, haha ####, maybe just have pdi to a tune instead
     
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  3. Joes fat

    Joes fat Bobtail Member

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    Dec 27, 2015
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    525 has different injectors an turbo than 435,460 an 500 where do you all get your info from
     
  4. Joes fat

    Joes fat Bobtail Member

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    Dec 27, 2015
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    An if your engine is use to running at a different horse power an you bump it up I hope you have some deep pockets
     
  5. ParkerFly

    ParkerFly Bobtail Member

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    Apr 11, 2012
    Tennessee
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    The 525 hp n14s uses steel top pistons. The lower horsepower versions do not. An n14 set to 525 without steel top pistons likely won't live long at all.
     
  6. 3rivers

    3rivers Bobtail Member

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    Mar 8, 2019
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    I’ve just done a engine swap. Had a n14 cpl 2391 @525 Went to n14 cpl 2592 @435. Put my 525 ecm on new engine and will not crank. Will not having 525 injectors cause injectors not to fire ?
     
  7. mrbamcclain

    mrbamcclain Light Load Member

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    May 25, 2011
    Hammond, La
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    Check the fuel shut off solenoid for 12V
     
  8. xsetra

    xsetra Road Train Member

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    6,548
    Aug 21, 2011
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    Put the original ecm back on.
    If your motor runs the 525 ecm needs work.
    Good luck
     
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