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Cummins N14 turbo is bad! Increasing power from 435hp to 525hp

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Lateralus180, May 7, 2017.

Page 3 of 3
  1. May 9, 2017 #21
    Lateralus180

    Lateralus180 Bobtail Member

    32
    3
    May 20, 2016
    0
    I bought the truck from a guy in North Carolina on Craigslist. I drove it back to Chicago area. It was a clean truck, the ones for sale by chicago are crap.
     
    Lateralus180, May 9, 2017
    Lateralus180, May 9, 2017
    #21
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  3. May 10, 2017 #22
    mrbamcclain

    mrbamcclain Light Load Member

    258
    116
    May 25, 2011
    Hammond, La
    0
    Can't, well actually you can throw the tune into the ECM, but you're not going to actually get the rating without upgrading hard parts in the motor. If you had a 460/525 you could up it all you want. Hell I've got a 625 tune, but I'm not even running it.
    Turned down to a 430. It's plenty suitable for me. I don't run any major pulls down south.
    As stated previously, once you go over 500 you need to watch for fretting.
    And without having any proof of a rebuild you'd be playing catch with a hot potato.
     
    mrbamcclain, May 10, 2017
    mrbamcclain, May 10, 2017
    #22
    KB3MMX and tony97905 Thank this.
  4. Aug 24, 2017 #23
    CellNet

    CellNet Light Load Member

    203
    82
    Jun 19, 2011
    Chicago IL
    0
    How is truck now? Did you get it fixed?
     
    CellNet, Aug 24, 2017
    CellNet, Aug 24, 2017
    #23
  5. Aug 24, 2017 #24
    Lateralus180

    Lateralus180 Bobtail Member

    32
    3
    May 20, 2016
    0
    Nope I'm just driving it. I sent the ECM to heavy duty powertrain and Terry re rated it to 525hp1850tq and I definitely felt the extra power. MPG is 7 on ECM (6.7 on let's truck app look me up Lateralus180) for a 4 month average. It pulls heavy loads like it's nothing. I don't think it's piston rings. Must be valve stems/guides because it blows through the oil when I idle. I usually don't idle because I run northern states and Canada and it's 60 degrees at night but when I was in Dallas last week I idled for 30 hours and I burned 1 gallon. But then I took a load through the mountains to Vancouver BC and all the way home to Chicago and hardly burned any oil, 1 gallon for 4,000 miles maybe? But it's collecting in the muffler when I idle you should have seen how much was dripping out after idling 30 hours. One of these days I'll change the cylinder heads and update you what happens
     
    Last edited: Aug 24, 2017
    Lateralus180, Aug 24, 2017
    Lateralus180, Aug 24, 2017
    #24
    CellNet Thanks this.
  7. Aug 24, 2017 #25
    Lateralus180

    Lateralus180 Bobtail Member

    32
    3
    May 20, 2016
    0
    Also I did buy a new turbo 3 months ago. There was no change in oil consumption. Same turbo number was good for the full 525 hp if anyone is wondering. CPL#2592 is a good motor to be uprated to 525hp. Call Terry at heavy duty powertrain he really knows his stuff. $200 uprate with no low nox files
     
    Lateralus180, Aug 24, 2017
    Lateralus180, Aug 24, 2017
    #25
    CellNet Thanks this.
  8. Sep 1, 2017 #26
    KB3MMX

    KB3MMX Road Train Member

    3,057
    2,574
    Dec 29, 2014
    Orrstown, PA
    0
    Sounds like the oil was coming from valve guides to me
     
    KB3MMX, Sep 1, 2017
    KB3MMX, Sep 1, 2017
    #26
    CellNet Thanks this.
  9. Jun 10, 2019 #27
    DUNE-T

    DUNE-T Road Train Member

    6,379
    14,985
    May 10, 2015
    Detroit, MI
    0
    Replacing my n14 turbo at a truck stop parking lot today MVIMG_20190610_104929.jpg
    Should I worry about the oil that got everywhere? It's in the exhaust pipe and it's also leaking from here
    MVIMG_20190610_105049.jpg
     
    DUNE-T, Jun 10, 2019
    DUNE-T, Jun 10, 2019
    #27
  10. Jun 10, 2019 #28
    starmac

    starmac Road Train Member

    6,642
    12,524
    Apr 11, 2019
    Fairbanks Ak
    0
    You will want to clean the air to air out, with steam preferably.
    Also check your air cleaners and all piping, for metal.
     
    starmac, Jun 10, 2019
    starmac, Jun 10, 2019
    #28
    DUNE-T Thanks this.
  11. Jun 10, 2019 #29
    Hulld

    Hulld Road Train Member

    2,882
    6,561
    Oct 19, 2015
    Upstate NY
    0
    Be carful that the air to air cooler is not full of oil.
    If it has oil in it when you start it the engine it will suck the oil in and run on it with the RPM going to the moon and no way to shut it down except cutting the air intake off.
    The last one I saw do this ended in a severe oily mess with a window in the block where a connecting rod came out.
     
    Hulld, Jun 10, 2019
    Hulld, Jun 10, 2019
    #29
    CellNet and DUNE-T Thank this.
  12. Apr 12, 2020 #30
    CellNet

    CellNet Light Load Member

    203
    82
    Jun 19, 2011
    Chicago IL
    0

    Hello, how is truck doing? Any feedbacks on torque and power? What about the turbo?
     
    CellNet, Apr 12, 2020
    CellNet, Apr 12, 2020
    #30
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