Engine fan size vs cooling ability

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by MLC Adventures, Jul 27, 2021.

  1. MLC Adventures

    MLC Adventures Medium Load Member

    454
    1,043
    May 2, 2021
    0
    Anybody ever installed a larger, more blades, or wider blade fan? It's well into the 100's today her e in Wyoming and South Dakota, and I'm having to back out of it on some hills.

    If so, how much effect did it have.

    Thanks guys
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Arctic_fox

    Arctic_fox Heavy Load Member

    715
    1,919
    Sep 16, 2016
    0
    It CAN have an effect but it will be minimal due to how the radator works. Usually your better off getting a thicker and/longer/wider radator depending on how much room you have and where it is. More surface area means more coolant getting cooled at a time means easier to manage temps.

    A really basic breakdown of whats going on but good enough for discusion.
     
    MLC Adventures Thanks this.
  4. TJB15

    TJB15 Bobtail Member

    29
    56
    Apr 29, 2020
    0
    Once changed fan from steel to plastic on an old '92 9300 410hp n14 stc motor (helped some) however the crossflow radiators in the old internationals really seemed to be the bigger issue.
     
    Oxbow Thanks this.
  5. lester

    lester Road Train Member

    1,696
    3,801
    Jan 2, 2012
    NW, Iowa
    0
    What truck and engine you got?

    I know some guys switch their older cats to an acert fan with good results. More blades I think and moves more air
     
    Oxbow Thanks this.
  6. MLC Adventures

    MLC Adventures Medium Load Member

    454
    1,043
    May 2, 2021
    0
    92 Volvo with a 11.1 DDEC II. I've tuned it pretty hot, so heat is gonna happen, was just thinking of a way to increase flow.

    It has a new 4 core and new water pump.

    Cooling has definitely improved since replacement, but today's heat caused some issues.
     
  7. RocketScott

    RocketScott Medium Load Member

    382
    462
    Apr 10, 2013
    Tacoma, WA
    0
    How much of a gap do you have from the fan to the shroud?

    The wider the gap the less efficient it will be
     
    Goodysnap Thanks this.
  8. MLC Adventures

    MLC Adventures Medium Load Member

    454
    1,043
    May 2, 2021
    0
    I assume you're speaking side to side? The standard 2ish inches you get with the correct belts, all the way around, so a slightly larger diameter fan is possible.

    I also have some depth to work with there, 3-4 inches, so a wider blade would be possible too.

    I just didn't want to chase that rabbit if the difference was negligible.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  • Draft saved Draft deleted