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Help Deciphering Dyno Numbers

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bobcat1958, Nov 26, 2008.

  1. Nov 26, 2008 #1
    bobcat1958

    bobcat1958 Bobtail Member

    8
    7
    Nov 23, 2008
    0
    Detroit Diesel Series 60
    Model Number 6067-gk60
    Prom Part Number 6n40-6188
    Rated HP/Torque 430/500 HP 1650 Torque

    Start and idle for 1 minute:

    Oil Pressure 48 Water Temp. 172

    Warm up 5 - minutes

    RPM Max Speed - 1650
    Load to 100 Wheel HP - 108
    Oil Pressure - 45
    Water Temp. - 190
    No Lube,fuel or coolant Leaks

    Final Run In:

    RPM Max Speed (DDR Reader) - 1900
    Max Wheel HP Observed - 460
    Crankcase Pressure at Full Load - 1.8" h2o
    Lube Oil Pressure at Full Load(Per DDR Reader) - 50 PSI
    Lube Oil Temp at Full Load (Per DDR Reader) - 197 Deg.
    Fuel Oil Temp. at Full Load - 99 Deg.
    Water Temp at Full Load - 202 Deg.

    Engine Cool Down: 2 Minutes

    Lube Oil Pressure at Idle - 26 PSI.
    Idle RPM - 600


    Anyone see anything wrong with this Data?
    This was from a Detroit Diesel Dyno Shop.
     
    bobcat1958, Nov 26, 2008
    bobcat1958, Nov 26, 2008
    #1
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  3. Nov 27, 2008 #2
    AgLaw

    AgLaw Light Load Member

    61
    34
    Jun 27, 2008
    Wharton, Texas
    0
    Bobcat, nothing pops out as being out of spec to me. 460hp to the ground is 92% of the 500hp engine rating. That is extremely good. All of my units have speced around 80 to 85% rated hp to the wheels. Is your truck equipped with a direct drive transmission or an overdrive?

    Temps look good, and your 1.8" c/c pressure is within 0.1" of what mine have dynoed at. 5" was the limit (which seems high to me) printed on one of my reports, so you're definitely within spec there.

    FYI, those specs don't note the status of the engine fan or any accessories which would be grabbing hp. Also, your report does not give the boost pressure, fuel pressure, or pulse width over the loaded rpm range.

    With the info given, I'd say the engine is fine.
     
    AgLaw, Nov 27, 2008
    AgLaw, Nov 27, 2008
    #2
  4. Nov 27, 2008 #3
    bobcat1958

    bobcat1958 Bobtail Member

    8
    7
    Nov 23, 2008
    0
    Thanks for the info.
     
    bobcat1958, Nov 27, 2008
    bobcat1958, Nov 27, 2008
    #3
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