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Comparison between 3406E and C15 truck engines

Discussion in 'Trucks [ Eighteen Wheelers ]' started by dkdist74, Oct 9, 2013.

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  1. Oct 9, 2013 #1
    dkdist74

    dkdist74 Bobtail Member

    7
    0
    Jan 24, 2011
    Crawfordville, GA
    0
    Trying to decide whether to rebuild a 3406E Cat Engine (Serial #starts with 5EK) or swap it out for a C15 Cat (Serial #starts with MBN). Which would be best for performance, reliability and fuel mileage?
     
    dkdist74, Oct 9, 2013
    dkdist74, Oct 9, 2013
    #1
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  3. Oct 9, 2013 #2
    fuzzeymateo

    fuzzeymateo Heavy Load Member

    771
    783
    May 20, 2013
    AZ
    0
    I'm certainly no expert and there are plenty on here but from my research I would rebuild the 3406E. The MBN has a pretty poor reputation in comparison. You really can't go wrong with the 3406E or 6NZ Cat engine.
     
    fuzzeymateo, Oct 9, 2013
    fuzzeymateo, Oct 9, 2013
    #2
    dkdist74 Thanks this.
  4. Oct 10, 2013 #3
    dkdist74

    dkdist74 Bobtail Member

    7
    0
    Jan 24, 2011
    Crawfordville, GA
    0
    Decided to build the 3406E. Is the extended warranty worth the money?
     
    dkdist74, Oct 10, 2013
    dkdist74, Oct 10, 2013
    #3
  5. Oct 10, 2013 #4
    Caterpillar Cowboy

    Caterpillar Cowboy Heavy Load Member

    837
    607
    Nov 11, 2010
    Wyoming
    0
    I have a 5EK, and when the time comes I'll rebuild it. Great motor.
     
    Caterpillar Cowboy, Oct 10, 2013
    Caterpillar Cowboy, Oct 10, 2013
    #4
  7. Oct 11, 2013 #5
    Fuzzy2116

    Fuzzy2116 Bobtail Member

    47
    1
    Sep 26, 2013
    0
    Better off with older motor less sensors less problems
     
    Fuzzy2116, Oct 11, 2013
    Fuzzy2116, Oct 11, 2013
    #5
  8. Oct 11, 2013 #6
    dwmac71

    dwmac71 Light Load Member

    183
    92
    Mar 23, 2008
    Lane,ks
    0
    best to replace all the sensors when you do the rebuild. the oil sensor on my 5ek started giving erratic reading at 1.1 million. the cam sensor failed at 1.3 million due to metal fatigue. not easy to find a cam sensor on a sunday afternoon from a rest stop in middle of no wear
     
    dwmac71, Oct 11, 2013
    dwmac71, Oct 11, 2013
    #6
  9. Oct 12, 2013 #7
    truckerjc

    truckerjc Bobtail Member

    41
    7
    Oct 13, 2011
    hoxie,kansas
    0
    build the mbn with 6nz parts and talk to mr. haney
     
    truckerjc, Oct 12, 2013
    truckerjc, Oct 12, 2013
    #7
  10. Oct 15, 2014 #8
    Black_Ice

    Black_Ice Bobtail Member

    10
    1
    Feb 28, 2009
    North
    0
    I'd like to talk to mr. haney
     
    Black_Ice, Oct 15, 2014
    Black_Ice, Oct 15, 2014
    #8
  11. Oct 15, 2014 #9
    Pablo-UA

    Pablo-UA Road Train Member

    7,604
    1,642
    Oct 11, 2010
    Borispol, Ukraine
    0
    I vote for 3406E. Much easier to work on and it is more reliable.

    Both 5EK and MBN are of the same emission level (pre EGR in USA ore Euro-II here), but C15 was made for future emissions and was made for road use up to E-IV and EPA2007 but was discontinued becouse of new emission rqurements
     
    Pablo-UA, Oct 15, 2014
    Pablo-UA, Oct 15, 2014
    #9
  12. Oct 15, 2014 #10
    T800H

    T800H Medium Load Member

    608
    295
    Apr 2, 2010
    The Keys
    0
    you're not going to find him here, he is long gone, but do a search on google and you'll find him on the other site.
     
    T800H, Oct 15, 2014
    T800H, Oct 15, 2014
    #10
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