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    Thread: "In Hg" on boost gauge? What does it mean?

    1. Member LiBlackRabbit's Avatar
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      03-06-2005 01:22 PM #1
      I know...I should know this but I forget. Please refresh my memory.

    2. 03-06-2005 01:23 PM #2
      inches of mercury?

    3. Banned
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      03-06-2005 01:38 PM #3
      yup

    4. Member LiBlackRabbit's Avatar
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      03-06-2005 09:38 PM #4
      Quote, originally posted by HatchedGTI »
      inches of mercury?

      Can someone explain further on what it means and whens its in that stage?


    5. 03-06-2005 09:41 PM #5
      Vaccum.


      There is a device called a mercurial barometer. Basically it measures pressure, as pressure increases the mercury in the barometer goes up.

      Or something like that.


      It warps time and space


      Modified by EuroHoMIE1.8T at 8:43 PM 3-6-2005


    6. 03-06-2005 10:52 PM #6
      http://theory.uwinnipeg.ca/phy....html

      Look at the first two. Barrometric pressure is measured by the height mercury raises in a tube. So inches of mercury is the movement the mercury takes beyond 0 psi. Basically the higher the mercury level in inches the farther the pressure is from 0psi. 760 mm/hg = 1 atm = 14.7 psi. Im not very good at explaining what i learned... but hopefully you understand what im saying.


    7. 03-06-2005 10:55 PM #7
      Quote, originally posted by HatchedGTI »
      http://theory.uwinnipeg.ca/phy....html

      Look at the first two. Barrometric pressure is measured by the height mercury raises in a tube. So inches of mercury is the movement the mercury takes beyond 0 psi. Basically the higher the mercury level in inches the farther the pressure is from 0psi. 760 mm/hg = 1 atm = 14.7 psi. Im not very good at explaining what i learned... but hopefully you understand what im saying.

      Which makes perfect sense, the closer your needles goes to 0 psi, the less inches of mercury u have.

      Yea im not good at explaing stuff either

      But i get what your saying 100%


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      03-06-2005 11:13 PM #8
      Remember, your engine is an air pump. When the throttle body is closed, the butterfly creates a huge restriction in the air intake - but the engine keeps trying to pump air. It pulls the air from the intake manifold creating vacuum.

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