N14 Celect tear down.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Mar 3, 2024.

  1. mile marker 27

    mile marker 27 Road Train Member

    1,168
    1,550
    Dec 4, 2019
    0
    Kit came in and it 1 piece pistons. I’m measuring counter bores, after a thorough and extensive cleaning and hand sanding. I measured 4 places per bore, with a borrowed counterbore/protrusion dial indicator.
    1- .368, .369, .369, .369
    2- .367, .369, .368, .367
    3- .367, .368, .368, .368
    4- .367, .366, .366, .367
    5- .369, .367, .368, .368
    6- .368, .369, .369, .368
    Liner flange thickness- .352
    Liner shim thickness was labeled .020 but when I measured, they were more like .017- .018. I probably need a few other thinner or thicker shims????
     
    W923 Thanks this.
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. W923

    W923 Road Train Member

    1,026
    3,067
    Feb 28, 2022
    0
    I would probably put true.020 shims in it or maybe.022s I don’t believe they make a 21
    Put 1 liner in and check
    The .017-018 ones aren’t going to be enough you want .005 min protrusion I like 6-7 I’ve heard some try for 7+ but I know what has worked for me
    what shims came out of it?
     
    mile marker 27 Thanks this.
  4. mile marker 27

    mile marker 27 Road Train Member

    1,168
    1,550
    Dec 4, 2019
    0
    They were around .0194 - .0195ish. Maybe they were originally .020’s? My kit didn’t come with them but I got an unopened set of Interstate McBee’s from a mechanic, that were labeled .020” but didn’t come out to that when I measured them. I’ll get ahold of Cummins and see if they have some true .020 or .022’s.
     
  5. mile marker 27

    mile marker 27 Road Train Member

    1,168
    1,550
    Dec 4, 2019
    0
    When I get these set right, what’s typically the determining factor in using standard or oversized head gaskets?
     
  6. W923

    W923 Road Train Member

    1,026
    3,067
    Feb 28, 2022
    0
    They were originally 20s
    Did you happen to check the protrusion before disassembling. I usually do and then measure the old liner flange and the new to determine what shims to use. This is just how I normally do it, Not that your doing it wrong
     
  7. W923

    W923 Road Train Member

    1,026
    3,067
    Feb 28, 2022
    0
    Are you referring to the oversized water grommets or a thicker gasket.
    Water grommets look at the holes in the top of the block and see if they’re eroded from rust. Thicker gaskets depend on the distance between the block deck and the crank centerline. Unless the block was planed you shouldn’t need to worry about that
     
  8. mile marker 27

    mile marker 27 Road Train Member

    1,168
    1,550
    Dec 4, 2019
    0
    I didn’t.
     
  9. mile marker 27

    mile marker 27 Road Train Member

    1,168
    1,550
    Dec 4, 2019
    0
    I pretty sure it’s a thicker gasket.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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