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c12 thoughts?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Licensed to kill, Dec 9, 2011.

  1. Dec 9, 2011 #1
    Licensed to kill

    Licensed to kill Heavy Load Member

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    Alberta
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    A friend is looking at an '04 C12 with 14,000 hours on it. He says it looks and runs good but is wondering about the pros/cons on this engine. Thoughts?
     
    Licensed to kill, Dec 9, 2011
    Licensed to kill, Dec 9, 2011
    #1
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  3. Dec 10, 2011 #2
    Mr. Haney

    Mr. Haney Road Train Member

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    Being in an 04 truck it's a bridge motor with a MBL serial number.

    Upgrade the ECM to the earlier files and they run good

    The earlier C-12's engines were also known for the piston skirt breaking. This would cause the piston crown and rod to exit the block........makes a nice window for checking the oil

    The last of the C-12's were much better in this regard and since this is an 04 it's the very last of the C-12 engines. He shouldn't have any issues with it with the right ECM tuning and removing the catalytic converter mufflers
     
    Mr. Haney, Dec 10, 2011
    Mr. Haney, Dec 10, 2011
    #2
  4. Dec 10, 2011 #3
    Licensed to kill

    Licensed to kill Heavy Load Member

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    Dec 31, 2010
    Alberta
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    Thanks Kurt, I'll pass that along.
     
    Licensed to kill, Dec 10, 2011
    Licensed to kill, Dec 10, 2011
    #3
  5. Dec 10, 2011 #4
    KANSAS TRANSIT

    KANSAS TRANSIT Road Train Member

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    Jul 28, 2011
    Glasco,Ks.
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    We are running 2003 C-12's right now, did have one break a crank, and had one drop a valve, but this was all at very high mileage, we are just hoping they last until the new trucks arrive.

    Ours are set at 430, they pull decent for us, BUT we are light. Biggest complait is they are not nearly as good on fuel as our old ISM's.
     
    KANSAS TRANSIT, Dec 10, 2011
    KANSAS TRANSIT, Dec 10, 2011
    #4
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