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CAI AEM Bypass Valve

Discussion in 'General Tech and Maintenance' started by khai_tuan_nguyen, Jan 26, 2004.

  1. khai_tuan_nguyen

    khai_tuan_nguyen Senior Member

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    I just bought one and installed it. I am a mechanical engineer, so I like to figure things out, but couldn't exactly figure out how this works from the directions. It has a foam filter on the outside, then a different foam filter on the insider separate by some rubber tabs and this plastic spring thing. Supposedly when the intake retains water the bypass spring does something, don;t know what or how and it absorbs the water and makes it go out of the bypass valve. How does it work, and why does it say to push on the tabs after i install?

    Let me know what you guys know.

    Thanks
    Khai
     
  2. CRX-YEM

    CRX-YEM Super Moderator Moderator VIP

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    if you were to completeley submerge an air filter in water the AEM bypass opens to atmospher creating a new path for air to reach the intake manifold.

    if the air filter is completely submerged and the engine is still running it will create a vacuum inside the intake tube causing the valve to open.
     
  3. h22bubbleback

    h22bubbleback Senior Member

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    :nod:
     
  4. khai_tuan_nguyen

    khai_tuan_nguyen Senior Member

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    where is the vale though and how does it open to atmospehre and how does it actually prevent the water from entering the intake. Does the sponge expand and close up the path? How dies it know when to expand etc etc?

    Thanks I am starting to understand?

    Khai
     
  5. B16

    B16 Super Moderator VIP

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    you're a mechanical engineer and you can't figure it out? did you go to ITT tech or some shit? lol

    ok, its like this
    the rubber flaps are the valve (they are inside that foam of the valve unit). if water gets sucked into the filter, it causes a pressure drop, this drop opens the valves, and lets air in. if air is coming in through the valve, it will no longer "suck" through the filter and continue to get its air through the valve.
     
  6. JDMilan

    JDMilan Senior Member

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  7. tab

    tab Super Moderator

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    Sounds simple enough. I think you were trying to overthink it.

    Expanding foam valves might be out next year though! :p

    Water is heavy. You don't need to block the path through the tube. You simply need to create an easier path for the air to travel, which drops the water along with the Vacuum level. :ph34r:
     
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