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Safari vs Airflow Snorkels

Discussion in 'Performance and Tuning' started by Frogsauce, Jun 18, 2013.

  1. Sje1124

    Sje1124 Well-Known Member

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    Sub'd. Trying to decide between the two also.
     
  2. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    stuck doing this on the side of the road drying everything out because the snow packs in the hood. when enough packs in the hood, the rest will drop down into the tubing. once the water builds up enough it'll get sucked into the filter. when the filter gets saturated enough it'll start sucking water in toward the engine soaking the MAF sensor. and a wet MAF is an unhappy MAF :(

    [​IMG]

    eventually disconnected the tube and ran a while so the rest of the water would get pushed out of the tube and not in my filter

    you could turn the hood backwards but when driving at highway speeds you run the risk of creating a nasty vacuum that could damage the engine (debatable, but i don't want to run that risk)
     
  3. Frogsauce

    Frogsauce [OP] Well-Known Member

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    I'm assuming the safari has the same heavy snow issue?

    Sounds like a donalson is preferred for heavy snow and dust.


    Another thing I thought about was it catching on tree limbs. Just have to drive carefully I guess. Or use limb risers that attach somewhere above the top of the snorkel.
     
  4. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    when wheeling, that is another reason why people turn their hoods around backwards. the branches will roll over them easier. in the bush, it'll prevent leaves and what not from getting in there as well
     
  5. Frogsauce

    Frogsauce [OP] Well-Known Member

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    I think if I went with either of them I would cut them a bit shorter.

    Also, I'm forgetful, so I would probably wire myself up a dash light as a reminder that it is turned around.
     
  6. Krazie Sj

    Krazie Sj Resident Jackass

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    Welp...that just convinced me.
     
  7. Brunes

    Brunes abides. Staff Member

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    The airflow comes with warnings all over it that turning it backwards at speeds greater than 15mph can cause damage...
     
  8. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    ^this
     
  9. Frogsauce

    Frogsauce [OP] Well-Known Member

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    Yeah, that's why I would probably wire up a dash light. Run it off the seat belt warning chime power since that starts going off for me around 15 mph. All speculation at this point, but I would have to do something.
     
  10. Brunes

    Brunes abides. Staff Member

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    Which Donaldson did you go with?? I'm looking at the flow rates for the TopSpin and I think that's the one I want but I'm not sure.
     
  11. hcoulby

    hcoulby Well-Known Member

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    I find it kind of funny that a snorkel lets you cross rivers but not winters. Surprised there is no add on we can do for it?

    Would we have the same problem in heavy rains traveling at speed?
     
  12. Krazie Sj

    Krazie Sj Resident Jackass

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    Yup. Read up above and you'll see that you need a Donaldson hood for the snorkel and you're ready to rock.
     
  13. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    10" w/ 3.75" inlet

    sierra expedition part # PBH000254

    donalson part # H000821

    Rated Flow HR: 330 CFM (9.34 CMM)


     
  14. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    these hoods are designed to have the water drain out the sides of the hood. so when most water/rain hits inside of the hood, it will hit the walls and exit through some channels. both safari and airflow have these designs.

    so under normal situations, the water never gets in the tube.

    the issue i had was with the wet snow that accumulated in the back of the hood blocking those channels and the only place for the snow to go to was to fall/melt into the tube.

    so it definitely varies depending on the severity of the weather you're dealing with and the type snow/rain
     
  15. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    [FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]All Safari Charge Air Rams feature a highly effective water separator system built right into the air ram in order to remove rain water from the incoming air stream - thus ensuring safe engine operation through[​IMG] even the most torrential tropical storms.[/FONT]
    [FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]An added benefit of the unique Safari Charge Air Ram is that it can be rotated to any position. This means great peace of mind for those who plan to travel in cold or high altitude conditions where heavy snow falls are anticipated. By rotating the air ram to face away from the prevailing wind/direction of motion, the air ram delivers additional protection from the choking effects of snow build-up inside the air intake.[/FONT]
     
  16. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    airflow:

    The Air Ram
    Air entering the Air Ram swirls violently, creating a cyclonic effect. The heaviest particles are ejected by the centrifugal force to the periphery of the swirl. There, they hit the vertical ribs where air pressure takes over to eject them out of the four slots at the base of the Air Ram. At this point, the air pressure pushes them out. The finer particles that are not ejected are removed by the vehicle air filter.
    Comparison: not all Air Rams are equal in performance.
    It is preferable for the Air Ram to have an open face without a screen because the screen deflects the airflow. The surface ratio of the open face to outlet aperture must be a minimum of 1.4:1. If the ratio is lesser, it will be insufficient to create the cyclone action that separates heavy contaminants effectively. Approximately 30% of the incoming airflow (above 25kph / 15mph) is used in the separation process. At Airflow, we ensure that the Airflow range uses a minimum of 1.4:1 for the 3” air ram, 1.7:1 for the 3.5” air ram and 2:1 for the cold air induction air ram. Any deflection of the incoming airflow must be avoided since it dramatically affects efficiency.
    Deflections may be caused by:
    1-Air Ram situated in close proximity to the bonnet/hood of the vehicle,
    2- Air Ram with a curved or foiled roof,
    3- Turning Air Ram away from travel direction,
    4-Where Air Ram design makes the air go back on itself at an angle greater than 100 degrees.
    If the Air Ram is turned away from the direction of travel, it will lessen the necessary positive pressure. In extreme situations, at higher speed, a vacuum may be generated causing irreversible engine damage! Incorrect Air Ram design may cause excessive induction noise, lack of separation and air blocking by vortex at various speeds. This air blocking will limit airflow. This is a common occurrence when “looks” take priority over functionality. If the Air Ram is moulded on the body of the snorkel (for aesthetic reasons) it does not provide particle separation, thus all contaminants need to be removed by the internal air filter. This increases the maintenance cycle of the air cleaner. Furthermore, this configuration may cause a vacuum into the snorkel, thus increasing the risk of engine damage.
     
  17. hcoulby

    hcoulby Well-Known Member

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    It was tongue and cheek. I have read a lot about them and understand their purpose and limitations. I am just surprised by the heavy snow.
     
  18. Frogsauce

    Frogsauce [OP] Well-Known Member

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    Don't get that argument started. Everyone has an opinion, but it really boils down to what you want to do with your own truck and if you want to deal with the consequences of those actions.

    Let's get back to comparing the two companies...

    So it seems like the consensus is that:

    1. Airflow is easier to install (since it's made for Tacoma)
    2. Airflow may need a donaldson for heavy snow/dust
    3. Airflow has 4" diameter tubing (larger than stock).
    4. Safari is proven, Airflow is a bit new

    Any safari owners out there also have issues with heavy snow?

    Also, what was the diameter of the tubing on the Safari?
     
  19. NYCO

    NYCO ‹^› ‹(ಠ_ಠ)› ‹^›

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    5. Safari states you can reverse the direction of the head without causing vacuum damage


    i wonder if that's because the top of the hood actually curves down before the opening...versus the airflow hood curves up to the top without curving back down before the opening?
     
  20. Frogsauce

    Frogsauce [OP] Well-Known Member

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    Looks like 3" to 3.5".

    Anyone with a safari having issues with heavy snow or dust
     
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