buying a 2002 classic mid roof .

Discussion in 'Freightliner Forum' started by bzinger, Dec 22, 2015.

  1. Dec 22, 2015 #1
    bzinger

    bzinger Road Train Member

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    i know there are many variables that go into this but im wondering what kind of fuel mileage i can expect from this truck ?
    it has a 525 ni4 cummins , 13sp , 370 rears ...engine has a fresh out of frame overhaul also .
    it will be on a dedicated run from omaha to laredo tx and back pulling a spread axle flat with a side kit , heavy going down and light coming back .
    and i like to run about 68 mph .
    any thoughts ?...thank you .
     
    bzinger, Dec 22, 2015
    bzinger, Dec 22, 2015
    #1
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  3. Dec 22, 2015 #2
    mountaingote

    mountaingote Road Train Member

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    If you're running anything less than tall 24.5 tires it will suck for economy. Side kits catch lots if wind, and you'll be catching a side wind most of the time running north/south. If it were me, I'd go lopro 22.5 and 3.36 or 3.25 and idle all the way. P.S. N14 was never known for economy
     
    mountaingote, Dec 22, 2015
    mountaingote, Dec 22, 2015
    #2
  4. Dec 22, 2015 #3
    bzinger

    bzinger Road Train Member

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    thanks mountaingoat ...its got 24.5 rubber on it and i wasnt to surprised to hear your mpg thoughts on it being that it has the aerodynamics of a barn door in the first place lol.
     
    bzinger, Dec 22, 2015
    bzinger, Dec 22, 2015
    #3
    mountaingote Thanks this.
  5. Dec 22, 2015 #4
    mountaingote

    mountaingote Road Train Member

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    There you go
     
    mountaingote, Dec 22, 2015
    mountaingote, Dec 22, 2015
    #4
  7. Dec 24, 2015 #5
    swaan

    swaan Road Train Member

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    If drivin right should have no prob getting 6 ish
     
    swaan, Dec 24, 2015
    swaan, Dec 24, 2015
    #5
    bzinger Thanks this.
  8. Dec 29, 2015 #6
    bzinger

    bzinger Road Train Member

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    thank you for the replys , i bought the truck today .
     
    bzinger, Dec 29, 2015
    bzinger, Dec 29, 2015
    #6
  9. Dec 29, 2015 #7
    uncleal13

    uncleal13 Road Train Member

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    My 2001 Classic condo pulling vans got 5.88 mpg with a 565 ISX. But I only did 62 mph.
     
    uncleal13, Dec 29, 2015
    uncleal13, Dec 29, 2015
    #7
  10. Dec 29, 2015 #8
    bzinger

    bzinger Road Train Member

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    omaha , ne
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    thank you sir ...mine is a mid roof and i know its never going to get volvo fuel mileage .
     
    bzinger, Dec 29, 2015
    bzinger, Dec 29, 2015
    #8
  11. Jan 15, 2016 #9
    Mike. Amos

    Mike. Amos Bobtail Member

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    Jan 15, 2016
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    N14 ,my experience. Fuel mileage on a 120, 7 to 8 ,rpm, 1650 1750. Don't try lugging motor. Overhead needs to be done correctly 4 inlb, on injectors,
    Takes special cummins torque wrench.
    If they don't have it ,get one. This is the difference nite day. A normal torque wrench does not go that low. If u don't do this ignore all of this have a nice day
     
    Mike. Amos, Jan 15, 2016
    Mike. Amos, Jan 15, 2016
    #9
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