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New T880 on order Paccar MX-13 input

Discussion in 'Kenworth Forum' started by JW Trucking, Oct 13, 2013.

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  1. Oct 13, 2013 #1
    JW Trucking

    JW Trucking Bobtail Member

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    Mar 14, 2011
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    Ok so I got the T880 on order. Ended up trying the MX-13 VS the ISX. Can anyone tell me what there fuel millage is & input is on the brand new 500HP MX engine. I don't want to hear about the old MX motors I know there was issues. I am hoping to get some better MPG with the MX I pull 105,500lbs so I know it may be a touch low on power but I am hoping to pick up .5MPG vs our ISX engine. Hopefully it was not a mistake.

    We have one Allison automatic & wile I wanted to try a new Autoshift I was dissapointed with Eaton our KW dealer tried to work with them on our setup & in the end they just did not want to work with us for our setup.

    Allison on the other hand has been a great product & they even flew a guy out to our jobsite to build us a custom tune for the tranny so this truck will have a new Allison as well they stand behind there product & so far has been a solid tranny for our haul.
     
    JW Trucking, Oct 13, 2013
    JW Trucking, Oct 13, 2013
    #1
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  3. Oct 13, 2013 #2
    ReeferOhio

    ReeferOhio Medium Load Member

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    Nov 29, 2010
    Ohio
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    You should've ordered the Ultra-shift plus, not a auto shift or an allison. To clarify the auto-shift has a clutch peddle and ultra shift does not. I think you would've seen better fuel economy with a Ultra-shift plus 18spd than with a 6spd allison. I don't think the 500hp MX has been out long enough to be a lot of feed back, but I can tell you the lower hp rating MX is spectacular!
     
    ReeferOhio, Oct 13, 2013
    ReeferOhio, Oct 13, 2013
    #2
  4. Oct 13, 2013 #3
    JW Trucking

    JW Trucking Bobtail Member

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    Mar 14, 2011
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    I tried to order a Ultra-shift but Eaton would not work with our dealer as we need a tranny that will crawl back to our trailers wile the driver is out of cab via the starter. We hook up up to 17 times a day with our 18-speeds.

    I also hope the T880 will not have problems with wire routing & such I am hoping they had those issues worked out with the T660 as as per our dealer the T880 is much in the same as far as design.
     
    JW Trucking, Oct 13, 2013
    JW Trucking, Oct 13, 2013
    #3
  5. Oct 13, 2013 #4
    ISXunlike

    ISXunlike Bobtail Member

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    May 12, 2013
    Cortez, CO
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    I don't think you'll be disappointed with the power too much. I guess you don't want this, but the company I haul for a lot had 100 or so 450 MX motors, and Peterbilt wound up trading them back for Cummins trucks. Lots of electronic issues, hopefully they've figured them out. I drove one for a week while my truck was in the shop, thought it ran decent. They are lighter than the ISX, but I don't think you'll see much different fuel economy pulling big loads, unless you're empty one way. Just my .02.
     
    ISXunlike, Oct 13, 2013
    ISXunlike, Oct 13, 2013
    #4
  7. Oct 13, 2013 #5
    JW Trucking

    JW Trucking Bobtail Member

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    Mar 14, 2011
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    Thanks no we are unloaded 1/2 of the time so this is were I am thinking I can gain that .5 mpg the log truck owner ops I talked to in WA said they were gaining .5 to .7 vs there ISX motors. It's a gamble as the ISX motors have been good to us for the most part.
     
    JW Trucking, Oct 13, 2013
    JW Trucking, Oct 13, 2013
    #5
  8. Oct 13, 2013 #6
    ISXunlike

    ISXunlike Bobtail Member

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    May 12, 2013
    Cortez, CO
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    I have a C12 that I run right now, and it seems like I really notice a gain versus a larger displacement motor on one way hauls, not as much OTR when I'm loaded 80%+. I hope you will post your experience. I'm going to be looking at a new truck in the next year or so, and as my username implies, I'm not a big ISX fan, but I'm gun shy of the Paccar, and I'm not much of a Volvo or Freightliner guy. I really liked the way that Paccar drove, decent power and light weight, I think they'll be a good motor if they fixed the electric/sensor stuff. Is the T880 a new version of the T800? I haven't heard of that one.
     
    ISXunlike, Oct 13, 2013
    ISXunlike, Oct 13, 2013
    #6
  9. Oct 13, 2013 #7
    Ubu

    Ubu Road Train Member

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    Ubu, Oct 13, 2013
    Ubu, Oct 13, 2013
    #7
  10. Nov 6, 2013 #8
    Busy dad

    Busy dad Bobtail Member

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    Feb 7, 2013
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    We bought 3 579 pete's with the 2013 455 mx ..currently getting 6.7 mpg (US) pulling Northern Ontario with no more than 100 ,000 pounds..Mostly around 80 000 Lb trucks are a year old , about 130 000 miles on them..
     
    Busy dad, Nov 6, 2013
    Busy dad, Nov 6, 2013
    #8
  11. Dec 16, 2013 #9
    jason6541

    jason6541 Road Train Member

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    Omaha, NE
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    My paccar engine is doing good 205,000 mi and not a hickup. Except some new trk teething problems. Last 5 quarters on ifta report avg 6.6 mpg. I drive fast but overall doing good
     
    jason6541, Dec 16, 2013
    jason6541, Dec 16, 2013
    #9
  12. Jan 7, 2014 #10
    JW Trucking

    JW Trucking Bobtail Member

    34
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    Mar 14, 2011
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    1st truck just came off the line not going to lie a little nervous I hope the MX motor & T880 serves us well.
     
    JW Trucking, Jan 7, 2014
    JW Trucking, Jan 7, 2014
    #10
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