MX13 dyno results

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by MicksRule, Oct 6, 2022.

  1. MicksRule

    MicksRule Medium Load Member

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    I'm not a heavy duty mechanic.

    I'm curious about a dyno report on a truck I'm looking to buy.

    The engine is a 2019 MX13 rated at 455 hp. I'm unsure what the rated torque is. It's also mated to a 12 speed automated and 2.64 rears.

    Max corrected hp at 1402 rpm was 363 and max corrected torque was 1365 at 1290 rpm.

    For those of you familiar with this motor and dyno numbers for it, are these numbers reasonable or should I run?
     

    Attached Files:

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  3. AModelCat

    AModelCat Road Train Member

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    75-90 hp loss through the drivetrain seems to be pretty typical in most cases from what I've experienced anyways.
     
  4. Another Canadian driver

    Another Canadian driver Road Train Member

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    A 20% power loss is usually noticed.
    A 500HP Volvo D13 delivers around 400HP on the ground with a 12 speed AT2612 direct drive tranny and 2.64 145/40 Meritor rear ends.
    MX13 455HP should deliver a 364HP recorded power to the ground.
    I hope this help you.
     
  5. MicksRule

    MicksRule Medium Load Member

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    If 20% is a decent number, 363 should close enough considering any variables in test procedures or test equipment. Does this seem right?
     
  6. AModelCat

    AModelCat Road Train Member

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    Back in the day my old man had his nearly brand new Series 60 on the dyno after an uprate to 500 hp. It laid down 411 hp to the rollers.
     
  7. MartinFromBC

    MartinFromBC Road Train Member

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  8. spsauerland

    spsauerland Road Train Member

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    Dyno seems good, what were numbers on the vitals like pressures and temps. I'd be interested in oil sample, trip report and after treatment history in ECM.
     
  9. MicksRule

    MicksRule Medium Load Member

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    Pressures and temps are in the dyno report I posted. Also looks like the test was performed in 10th gear, based on speed and rpm numbers, and with older wide based tires based on service history that included presale reconditioning.

    Will an oil sample be accurate after an oil change?

    Trip report? I do have, at least, a partial ecm report that looked pretty good as far as total engine hours and fuel economy numbers go, but doesn't show any aftertreatment history in it. Is this what you're referring to? I may be able to get a complete report. Actual average speed is slightly better than 42 mph with all idle time.



    Average Speed....... 049 MPH Fuel Mileage........ 00008.13 MPG

    Total Distance...... 0434409 Mi Driving Mileage..... 00008.44 MPG

    Moving Mileage...... 00008.44 MPG

    Engine Time......... 010275:05 H:M

    Driving Time........ 008780:46 H:M Intertrip Idle Time. 001405:54 H:M

    Moving Time......... 008097:31 H:M Intertrip Idle Pct.. 013.68 %

    Total Active Time... 036593:01 H:M Short Idle Time..... 000803:17 H:M

    Short Idle Pct...... 007.81 %

    Over RPM Time....... 000001:32 H:M Extended Idle Time.. 000602:37 H:M

    Over RPM Percent.... 000.01 % Extended Idle Pct... 005.86 %

    Over Speed Time..... 000000:16 H:M Auto Fault Check.... N/A

    Over Speed Percent.. 000.00 % Possible Faults..... 000108 #

    Excess Speed Time... 000000:01 H:M Extraction Date..... N/A

    Coast Out of Gear... 000000:00 H:M User Fault Confirm.. N/A
     
    Last edited: Oct 7, 2022
  10. baha

    baha Road Train Member

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    Looking good if it passes the oil ail. and blow by test in hi gear it seems to be a good motor!
     
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