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3406 high coolant temps

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by rank, May 4, 2018.

Page 2 of 8
  1. May 4, 2018 #11
    062

    062 Road Train Member

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    Need to make up a rig to check for boost leaks.
     
    062, May 4, 2018
    062, May 4, 2018
    #11
    rank Thanks this.
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  3. May 4, 2018 #12
    062

    062 Road Train Member

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    What rpm are you running at?
     
    062, May 4, 2018
    062, May 4, 2018
    #12
    rank Thanks this.
  4. May 4, 2018 #13
    rank

    rank Road Train Member

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    50 miles north of Rochester, NY
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    Couldn’t find any leaks. Does a boost leak drive up coolant temps too? Don’t forget she’ll make 26 psi and seems to have plenty of power
     
    rank, May 4, 2018
    rank, May 4, 2018
    #13
    BoxCarKidd Thanks this.
  5. May 4, 2018 #14
    rank

    rank Road Train Member

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    50 miles north of Rochester, NY
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    ~1625 at 60 mph and I down shift around 1400
     
    rank, May 4, 2018
    rank, May 4, 2018
    #14
    Oxbow Thanks this.
  7. May 4, 2018 #15
    062

    062 Road Train Member

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    That's lower than I'd run a b model. Any kind of long pull I look to be turning 1700 or better.
     
    062, May 4, 2018
    062, May 4, 2018
    #15
    rank Thanks this.
  8. May 4, 2018 #16
    rank

    rank Road Train Member

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    Yeah that1625 at 60 mph is just cruising down the road
     
    rank, May 4, 2018
    rank, May 4, 2018
    #16
  9. May 4, 2018 #17
    wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    A smaller boost leak or two will definitely drive engine temp up and still show same as always pressure. It will drive pyro up to
     
    wore out, May 4, 2018
    wore out, May 4, 2018
    #17
    SAR, Oxbow, shogun and 1 other person Thank this.
  10. May 4, 2018 #18
    062

    062 Road Train Member

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    Yeah I get that. I'm saying on a hill you know that's going to pull you down,I look to be in a gear that will have the motor turning 1700 or so. I'm running a e model and 1400 is as low as I will go if I'm about to top hill otherwise I grab another gear.
     
    062, May 4, 2018
    062, May 4, 2018
    #18
    Rubber duck kw and rank Thank this.
  11. May 4, 2018 #19
    rank

    rank Road Train Member

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    50 miles north of Rochester, NY
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    So generally, if traffic conditions allow I might speed up to hit the bottom of the hill at 1700-1800 in high gear, then down shift when it falls below 1500. With 3.90’s I have the power to pull most hills in direct but on a warm day I will need to go one below direct not for power but to keep the coolant temp down.

    This is the northern Appalachians not the Rockies.....NY, PA, VT, CT
     
    rank, May 4, 2018
    rank, May 4, 2018
    #19
    shogun Thanks this.
  12. May 4, 2018 #20
    rank

    rank Road Train Member

    9,918
    113,504
    Feb 11, 2010
    50 miles north of Rochester, NY
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    FECC84CA-BE01-4B05-9C1E-690A2EAF0E18.jpeg
    Sigh. Went to get my boost test rig and there’s a hole where my psi gauge used to be. #### shop monkeys
     
    rank, May 4, 2018
    rank, May 4, 2018
    #20
    KB3MMX, Oxbow and wore out Thank this.
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