Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

N-14 Vs 12.7 Glider kit which engine would you buy?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 410Truckin, Oct 11, 2020.

Page 1 of 2
  1. Oct 11, 2020 #1
    410Truckin

    410Truckin Bobtail Member

    17
    5
    Apr 28, 2020
    Westminster, Maryland
    0
    My 2006 isx recently spun the #2 bearing 30k into an inframe, As the oil pump seemingly failed. More on my part as I never thought to have it changed either. So With that said I'm looking for another truck to purchase. I came a cross a few glider kits, One with an n-14 500k miles and the others with a 12.7 detroit with 755k miles. Which would be your go to without a doubt?

    I've heard of/Recently researched the n-14 that the engine block can start fretting. how common is that? and is it avoidable? Just reading about that has me looking else where but I used to think so highly of that engine.
     
    410Truckin, Oct 11, 2020
    410Truckin, Oct 11, 2020
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Oct 11, 2020 #2
    olddog_newtricks

    olddog_newtricks Medium Load Member

    639
    2,162
    Jun 3, 2018
    0
    The N-14 would be my pick.
     
    olddog_newtricks, Oct 11, 2020
    olddog_newtricks, Oct 11, 2020
    #2
    Bean Jr., jsnell and Diesel Dave Thank this.
  4. Oct 11, 2020 #3
    410Truckin

    410Truckin Bobtail Member

    17
    5
    Apr 28, 2020
    Westminster, Maryland
    0
    Any experience with the motor? How did it treat you if so
     
    410Truckin, Oct 11, 2020
    410Truckin, Oct 11, 2020
    #3
  5. Oct 11, 2020 #4
    Dino soar

    Dino soar Road Train Member

    4,809
    26,922
    Dec 8, 2017
    0
    Both are great engines.

    I have heard of fretting before with the n14 if you run it at low RPMs I think? I'm not sure about that year but some of them had injector harness problems or electrical problems there with the injectors.

    With that being said someone on this forum said they have one and I don't remember if it was rebuilt or not but it had almost 2 million miles on it.

    I have the mechanical sibling to the n14, the Big cam Cummins, and I love it. The n-14 is even beefier.

    The Detroit has a super heavy duty bottom end. The weak point is the bull gear which at 755000 miles needs to be done.

    I bought my truck with a blown 12.7 because the bull gear stripped at 800,000 miles.

    But both are great engines.
     
    Last edited: Oct 11, 2020
    Dino soar, Oct 11, 2020
    Dino soar, Oct 11, 2020
    #4
    Bean Jr. and blairandgretchen Thank this.
  7. Oct 11, 2020 #5
    410Truckin

    410Truckin Bobtail Member

    17
    5
    Apr 28, 2020
    Westminster, Maryland
    0

    Good to hear. Either way it seems i'd be in good hands. I have read that the fretting is more common with the 500 to 525 hp engines. The one i am looking at is a 460hp. That might be my way to go. We will see.
     
    410Truckin, Oct 11, 2020
    410Truckin, Oct 11, 2020
    #5
  8. Oct 11, 2020 #6
    Dino soar

    Dino soar Road Train Member

    4,809
    26,922
    Dec 8, 2017
    0
    Well I have a friend that is a actual Cummins mechanic and he thinks the n14 is 100% if that helps.

    But really they both are excellent engines.
     
    Dino soar, Oct 11, 2020
    Dino soar, Oct 11, 2020
    #6
    410Truckin Thanks this.
  9. Oct 12, 2020 #7
    Bean Jr.

    Bean Jr. Road Train Member

    5,548
    9,892
    Mar 30, 2014
    0
    I would be inclined to choose the lower mileage engine.
     
    Bean Jr., Oct 12, 2020
    Bean Jr., Oct 12, 2020
    #7
    410Truckin Thanks this.
  10. Oct 12, 2020 #8
    MericanMade

    MericanMade Heavy Load Member

    776
    1,810
    Aug 14, 2019
    Pensacola, FL
    0
    MericanMade, Oct 12, 2020
    MericanMade, Oct 12, 2020
    #8
    410Truckin Thanks this.
  11. Oct 12, 2020 #9
    jamespmack

    jamespmack Road Train Member

    20,034
    216,333
    Mar 25, 2014
    OH
    0

    Don't lug it, drive it like a big cam and the block is fine.
     
    jamespmack, Oct 12, 2020
    jamespmack, Oct 12, 2020
    #9
    410Truckin, Roberts450 and spsauerland Thank this.
  12. Oct 12, 2020 #10
    AModelCat

    AModelCat Road Train Member

    29,416
    161,657
    Jul 7, 2015
    Canuckistan
    0
    I'd pick the truck that's in better condition and/or spec'd best for the task I need it to do. Engine would only be a small factor in the choice.
     
    AModelCat, Oct 12, 2020
    AModelCat, Oct 12, 2020
    #10
    Bean Jr. and 410Truckin Thank this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

    • Page 1 of 2