Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Tips for Max Pulling Power On A 2012 Paccar Mx 13

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Trucker186, Jul 4, 2019.

  1. Jul 4, 2019 #1
    Trucker186

    Trucker186 Medium Load Member

    447
    366
    Jan 29, 2019
    0
    My Father has started running at a different company,we are used to 550hp to 600hp C15s and just poppin gears at 1500 on the high side. Since We have changed companys we are in new emissons truck and they pull horrible because of the new transmissions trying to return MPG. We haul milk and are ALWAYS over 95,000 pounds. MPG is no object because its already crap at around 5mpg which were getting 7 outta the old cat. Im pretty sure its a 435 engine with a 9 speed and we have no idea what rear ends. What Rpm is best for pulling power and what rpm should we drop gears. Right now we shift 1500 on flat in the high range and on hills around 1700 and were barely getting up hills at 45. When we ran the Cats we were around the same weight and those things would get up and go. Our average shift Rpms on flat ground go like such. starting in lets say 1st gear so 2nd at 1100 3rd at 1200 4th at 1300 then 5th at 1400 then hit the high range and run 6th 1500 7th 1500 8th 1500 and 9th 1500. should we be running the rpms higher,when should we down shift on a hill ?
     
    Trucker186, Jul 4, 2019
    Trucker186, Jul 4, 2019
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Jul 4, 2019 #2
    Cat sdp

    Cat sdp . .

    20,854
    71,985
    Apr 8, 2012
    Orion's Belt
    0
    Cat sdp, Jul 4, 2019
    Cat sdp, Jul 4, 2019
    #2
    daf105paccar, Oxbow, Bean Jr. and 2 others Thank this.
  4. Jul 4, 2019 #3
    Goodysnap

    Goodysnap Road Train Member

    3,700
    8,972
    Jul 12, 2017
    0
    mx13torque-e1547741899675.jpg

    At 430hp you are purple.
     
    Goodysnap, Jul 4, 2019
    Goodysnap, Jul 4, 2019
    #3
    pushbroom, Intothesunset, daf105paccar and 1 other person Thank this.
  5. Jul 4, 2019 #4
    spsauerland

    spsauerland Road Train Member

    4,296
    10,886
    May 31, 2010
    West Harrison, In
    0
    Here is brochure for EPA 10 engines and how supposed to be speced gear wise. They tend to need more RPM vs EPA 13 and up. Screenshot_20190704-233242.png
     

    Attached Files:

    spsauerland, Jul 4, 2019
    spsauerland, Jul 4, 2019
    #4
    pushbroom, daf105paccar, Oxbow and 1 other person Thank this.
  7. Jul 5, 2019 #5
    Bean Jr.

    Bean Jr. Road Train Member

    5,484
    9,733
    Mar 30, 2014
    0
    Smaller engines like to wind more than the large engines. With my 2 B trucks and my N14, it was ok to pull them down, even to 1,100 rpm. With a 12.7, pulling it under 1,400 is discouraged.
     
    Bean Jr., Jul 5, 2019
    Bean Jr., Jul 5, 2019
    #5
    Intothesunset Thanks this.
  8. Jul 5, 2019 #6
    Ffx95

    Ffx95 Road Train Member

    1,368
    2,628
    May 18, 2017
    0
    Well the mx13 I’m with seems to pull best between the 1200-1500 range after that it loses most of its pulling power. These small engines like to run low anything past 1500 you’re wasting power and fuel. Now I would rev it to 1700 if you’re coming up a steep hill just so the turbo gets going by the time you get lugged to 1500-1600 so you can get the most pull.

    If you’re already doing this you’re just not used to these weaker emissions engines. They don’t pull like the old CATs or Detroits. Just a world we live in now. That’s why I try my best to build up speed if I know I’m climbing a hill that way I only have to gear down maybe once.
     
    Ffx95, Jul 5, 2019
    Ffx95, Jul 5, 2019
    #6
  9. Jul 5, 2019 #7
    tnevin225

    tnevin225 Road Train Member

    1,166
    1,601
    Jan 1, 2014
    0
    I think that truck in general is just wrong for the job it's doing but being that it's a company truck not much you can do about it. The only thing I can think of to make it more drivable would be to see if that 9 speed can be converted to a 13 speed.
     
    tnevin225, Jul 5, 2019
    tnevin225, Jul 5, 2019
    #7
    Trucker186, daf105paccar and Goodysnap Thank this.
  10. Jul 5, 2019 #8
    daf105paccar

    daf105paccar Road Train Member

    6,564
    7,293
    Apr 15, 2012
    0
    Should have the higher hp setting too.
    430hp is to low a setting,combined with a 9 speed.............:oops::mad::eek:
     
    daf105paccar, Jul 5, 2019
    daf105paccar, Jul 5, 2019
    #8
    Oxbow, Bean Jr., sebas9558 and 2 others Thank this.
  11. Jul 5, 2019 #9
    Intothesunset

    Intothesunset Road Train Member

    2,289
    4,880
    Apr 15, 2019
    truck
    0
    The MX13 is a pushrod engine but the last one I drove 2016 I would wind it up to 1800 rpm it did not care that I drove it like a 12.7 troit. And fuel avg was 6.5 avg. With reefer box loaded full most days. It was 455hp, 13 manual, and 1500 rpm was 75 mph goverend.
     
    Intothesunset, Jul 5, 2019
    Intothesunset, Jul 5, 2019
    #9
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.