rerate 370 to 525hp, cummins n14

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

  1. killer120

    killer120 Light Load Member

    70
    42
    Jul 1, 2013
    0
    anyone know if a factory can rerate a 370hp cummins n14 to the maximum 525hp, I know they will only do the maximum for the rated cpl, but if they do a cylinder head, injector, cam and ecm swap would they do an uprate to 525?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. bzinger

    bzinger Road Train Member

    14,510
    52,402
    Dec 10, 2014
    omaha , ne
    0
    Don't know the answer to your ? But I do know the fuel mileage on my n14 525 is nothing to write home about .
     
  4. 062

    062 Road Train Member

    5,527
    21,405
    Oct 20, 2013
    0
    As long as the hard parts are changed to a cpl rated for 525,I don't see why not.
     
  5. Heavyd

    Heavyd Road Train Member

    7,473
    5,843
    Feb 4, 2009
    0
    What is your current engine serial number?
     
  6. killer120

    killer120 Light Load Member

    70
    42
    Jul 1, 2013
    0
    2390, 370hp, 1250 torque I believe, wanna do 525 uprate, I think the only way they would is interchanging all the parts since the max for this cpl category is 370, but maybe swap cylinder head, injectors, cam and ecm for 2025 cpl parts, might be able to reprogram ecm to 525 and 1850 torque, we have cummins insite but not pro, cant change ecm specs, just monitor them, I know the 370 and 525 both use the ht60 turbo, so wouldn't have to swap that, just wondering because wanting to put Pittsburgh power box on, why put it on a 370 to go up to 500 when you can do a rerate to 525 and upgrade to 700 and 2150 torque with the box
     
  7. Heavyd

    Heavyd Road Train Member

    7,473
    5,843
    Feb 4, 2009
    0
    I have a CPL2592 for 525 hp.
    Cam is the same.
    Heads are the same.
    You need new injectors, 3411767
    Same ECM
    Turbo is the same.

    Looks like you only need a set of injectors and programming!
     
    almujib and killer120 Thank this.
  8. colorado18spd

    colorado18spd Medium Load Member

    396
    297
    Mar 10, 2013
    0
    I have the 2592 cpl and 500hp is max on mine so I was told, could be wrong, thinking about turning it down to 460 maybe better mpg? The stamped #'s say 435/500
     
  9. killer120

    killer120 Light Load Member

    70
    42
    Jul 1, 2013
    0
    lol they say that lowering the hp gets better mileage but its better to have more, boost out of the engine, keep the same injectors because they can only produce a certain amount of fuel, just tune it to add more boost and to it, the trucks gonna max out on the fuel burned but why not maximize the horsepower for that amount of fuel being burned, for example a 500 tuned to 675 with a Pittsburgh power box, same amount of fuel being burned but you'll be gaining an extra 175hp and 300lbs of torque and in return wont have to be as hard on the accelerator, there for using less fuel but obtaining the same level of power, I used to have a power box on a c15 and it did wonders, brought it from 475hp to around 600 and gained almost 300lbs of torque, burned the same amount of fuel at full load but didn't have to be so hard on the gas with the extra boost, so pretty much would still be at 475 with just over 1/2 throttle
     
  10. bzinger

    bzinger Road Train Member

    14,510
    52,402
    Dec 10, 2014
    omaha , ne
    0
    Thanks for adding that , I was thinking turning mine down being that I baby it but then thought on what I do Id be leaning on the pedal .
     
  11. 062

    062 Road Train Member

    5,527
    21,405
    Oct 20, 2013
    0
    What is the driveline rated at? If it's not 1850. Dealers or cummins probably will only go as high as it's rated.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  • Draft saved Draft deleted