NXS to 6NZ

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by RollOut Transport, Jul 31, 2017.

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  1. Jul 31, 2017 #1
    RollOut Transport

    RollOut Transport Bobtail Member

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    Hi forum members. I'm new here. Wanted to know if a 07 NXS Block can replace an 02 6NZ Block? I have a bad 6NZ block and would like to swap everything out into the NXS block. Is this doable?
     
    Last edited: Aug 1, 2017
    RollOut Transport, Jul 31, 2017
    RollOut Transport, Jul 31, 2017
    #1
    Oldironfan Thanks this.
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  3. Aug 1, 2017 #2
    E model Cat man

    E model Cat man Light Load Member

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    Are you going to just use the bare block and put everything in it from the 6nz? Timing gears, crankshaft, front cover structure, etc?..if so then yes its the same block.
     
    E model Cat man, Aug 1, 2017
    E model Cat man, Aug 1, 2017
    #2
  4. Aug 2, 2017 #3
    RollOut Transport

    RollOut Transport Bobtail Member

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    Would I be able to use the NXS crankshaft if I switch to 16:1 pistons? Or would the longer stroke of the NXS crank cause a problem with the 6NZ ecm timing?
     
    RollOut Transport, Aug 2, 2017
    RollOut Transport, Aug 2, 2017
    #3
  5. Aug 2, 2017 #4
    E model Cat man

    E model Cat man Light Load Member

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    Youll need to buy the 16:1 accert one piece steel genset pistons or have .080 milled off the top of the 18:1 mxs pistons to lower them to 16:1...your 6nz ecm will work Great as long as you use the front cover with the 6nz cam sensor and the 6nz cam gear.
     
    E model Cat man, Aug 2, 2017
    E model Cat man, Aug 2, 2017
    #4
  7. Aug 2, 2017 #5
    RollOut Transport

    RollOut Transport Bobtail Member

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    1: Will the 16:1 genset pistons use the standard NXS or 6NZ piston rings?

    2: Will I be able to use the new 6NZ liners I have in the NXS block along with the NXS rotating assembly or will I have to return them and get NXS liners?

    3: Will I have to get NXS genset liners for the NXS one piece steel genset pistons?
     
    Last edited: Aug 2, 2017
    RollOut Transport, Aug 2, 2017
    RollOut Transport, Aug 2, 2017
    #5
  8. Aug 3, 2017 #6
    SAR

    SAR Road Train Member

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    @superhauler can maybe help you with some of your questions.
     
    SAR, Aug 3, 2017
    SAR, Aug 3, 2017
    #6
    Oxbow and Superhauler Thank this.
  9. Aug 3, 2017 #7
    Superhauler

    Superhauler TEACHER OF MEN

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    Liners are the same, yes on the nxs rings. I would go with the (heavyhaul) rings. Dont remember the part #.
     
    Superhauler, Aug 3, 2017
    Superhauler, Aug 3, 2017
    #7
    Oxbow and SAR Thank this.
  10. Aug 3, 2017 #8
    RollOut Transport

    RollOut Transport Bobtail Member

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    Thanks for the reply, and if you remember what the part# is for the heavy haul rings please let me know.
     
    RollOut Transport, Aug 3, 2017
    RollOut Transport, Aug 3, 2017
    #8
    Oxbow Thanks this.
  11. Aug 4, 2017 #9
    RollOut Transport

    RollOut Transport Bobtail Member

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    Has anyone had any problems milling .80 thousands off the tops of the pistons?
     
    RollOut Transport, Aug 4, 2017
    RollOut Transport, Aug 4, 2017
    #9
  12. Aug 5, 2017 #10
    Superhauler

    Superhauler TEACHER OF MEN

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    No, mill the bowl of the pistons (center) not the top.
     
    Superhauler, Aug 5, 2017
    Superhauler, Aug 5, 2017
    #10
    Oxbow and SAR Thank this.
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