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ISX Cylinder liner sinking causing head gasket failure

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Truck engine machinist, May 2, 2020.

Page 1 of 4
  1. May 2, 2020 #1
    Truck engine machinist

    Truck engine machinist Light Load Member

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    For all of you ISX mechanics. If you are working on a 2013 1/2, and newer, ISX, with factory brass cylinder liner shims, you will usually find that the counterbores are not fretted at all. Liners go down, because the brass bearings (as Cummins calls them) (ie shims) have smashed. I now have stainless steel shims, that you can install, in place of the brass shims, and get the liners up to .014" protrusion, without doing any machining of the counterbores.
     
    Truck engine machinist, May 2, 2020
    Truck engine machinist, May 2, 2020
    #1
    little cat 500, D.Tibbitt, FoolsErrand and 7 others Thank this.
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  3. May 2, 2020 #2
    AModelCat

    AModelCat Road Train Member

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    Funny Cummins engineers can't figure this stuff out but a machinist can.

    The stainless shims holding up good?
     
    AModelCat, May 2, 2020
    AModelCat, May 2, 2020
    #2
    D.Tibbitt and Shawn2130 Thank this.
  4. May 2, 2020 #3
    Truck engine machinist

    Truck engine machinist Light Load Member

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    Holding up very good. I am selling these all over the country, for years Every one is extremely happy with the results. Most of my customers will not put a ISX together, without S/S shims. Cummins will have to do something else. I have seen many, many brass shim failures, (One was smashed .010" on one side of the liner. .000" smash on the other side) Those truckers are very upset, with Cummins. One fleet has two 2014s that failed. Has two more to go. When???
     
    Truck engine machinist, May 2, 2020
    Truck engine machinist, May 2, 2020
    #3
    D.Tibbitt, Shawn2130 and AModelCat Thank this.
  5. May 2, 2020 #4
    Goodysnap

    Goodysnap Road Train Member

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    Very interesting? Thank you for sharing!!!!!

    I have a 2350 apart now with #5 dropped to .003 and a plain as day blown gasket.

    Have you sourced the shims from a third party manufacturer? "No detailIs required, just curious" I will most definately will be mic'ing these once apart.
     
    Goodysnap, May 2, 2020
    Goodysnap, May 2, 2020
    #4
    spsauerland and Dave_in_AZ Thank this.
  7. May 2, 2020 #5
    White_lightning1983

    White_lightning1983 Light Load Member

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    What about the 2014 isx motors? How do they hold up?
     
    White_lightning1983, May 2, 2020
    White_lightning1983, May 2, 2020
    #5
  8. May 2, 2020 #6
    spsauerland

    spsauerland Road Train Member

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    Let us know what you find with your measurements.
     
    spsauerland, May 2, 2020
    spsauerland, May 2, 2020
    #6
    Goodysnap Thanks this.
  9. May 11, 2020 #7
    Goodysnap

    Goodysnap Road Train Member

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    20200511_090546.jpg


    This is #5 my suspect hole and liner was low and measured .005" on the Hot side. All liners measure at minimum spec or below on the hot side. Cold side was around .010"

    The shim is cracked on the Hot side. Shim Mic'd .026" at the same spot the liner was low. All other spots mic around .032". There is evidence of fretting on all 6. This one is the worst.
     
    Goodysnap, May 11, 2020
    Goodysnap, May 11, 2020
    #7
    D.Tibbitt, QUALITYTRUCK, Shawn2130 and 1 other person Thank this.
  10. May 11, 2020 #8
    Truck engine machinist

    Truck engine machinist Light Load Member

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    I've seen this many times.
     
    Truck engine machinist, May 11, 2020
    Truck engine machinist, May 11, 2020
    #8
    Shawn2130 Thanks this.
  11. May 11, 2020 #9
    Truck engine machinist

    Truck engine machinist Light Load Member

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    Dec 2, 2011
    USA
    0
    What year, is this engine?
     
    Truck engine machinist, May 11, 2020
    Truck engine machinist, May 11, 2020
    #9
  12. May 11, 2020 #10
    Goodysnap

    Goodysnap Road Train Member

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    2015

    Less than 450 on the clock
     
    Goodysnap, May 11, 2020
    Goodysnap, May 11, 2020
    #10
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