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  • calculating psi???

    I was wondering if there was a formula to calculate the speed of air coming into your car into psi. Like lets say if you where able to push 200mph wind into your cars throttle body. what would the psi be??? Thanks.

    2000 V6 Camaro(bought brand new)
    5 speed
    Project: Unreal
    Will give details when fin.
    2000 V6 Camaro(bought brand new)
    5 speed
    Project: Unreal
    Several Mods..:naughty:plus Nitrous=WEEeee:banana:

    2007 Suzuki GS500F :D

    Daily driver
    2007 Chevy Aveo 5
    Mods K&N air filter:excited:
    www.guardiansworlds.com

  • #2
    I could be wrong here, but I'm fairly certain that velocity does not have much to do with pressure. I think it more so involves volume than any thing else.

    Tom
    <a href=\"http://www.fullthrottlev6.com\" target=\"_blank\">www.fullthrottlev6.com</a><br /><a href=\"http://www.chitownracing.com\" target=\"_blank\">www.chitownracing.com</a>

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    • #3
      true, it is measured in volume, not velocity. Compress air and you have a greater volume, thats what the turbo's and sc's do, inbetween them and the TB they build up pressure.
      -Steve

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      • #4
        Hey, thanks for the replies. Another question then. If I was able to push 200 + air through the throttle body, would that increase HP and about how much would that increase it by. I figure that it should increase it some what, since it would be something like ram air. Is there a formula for that? Thanks.

        2000 V6 Camaro(bought brand new)
        5 speed
        Project: Unreal
        Will give details when fin.
        2000 V6 Camaro(bought brand new)
        5 speed
        Project: Unreal
        Several Mods..:naughty:plus Nitrous=WEEeee:banana:

        2007 Suzuki GS500F :D

        Daily driver
        2007 Chevy Aveo 5
        Mods K&N air filter:excited:
        www.guardiansworlds.com

        Comment


        • #5
          ram air only really comes in at around 90+ mph, and that simulates 1psi about. so, if you can get 200mph wind going into that little amount of space, you'd push ~2psi. you'd have to have that constant though.
          and that's a rough guess.
          2011 Camaro LS 6M, in black.

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          • #6
            I heard the ram air takes in effect at about 60mph, just hear say tho
            -Steve

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            • #7
              There is an equation that is usally used to explain this sort of thing. It's called Bernoulli's equation. sometime the mechanical energy equation.
              I vaguely remember it from some of the classes i have taken. don't want to tell you the wrong thing, so i'm going to consult my books and memory and try and work out a way of explaining it that doesn't involve [img]graemlins/love.gif[/img] calculus [img]graemlins/love.gif[/img]

              ok...off i go...probably will have it tomorrow,
              later

              edit: for a quick fix see this link

              can explain it more, if you have more questions

              [ January 28, 2002: Message edited by: Ike ]</p>
              Your sig is the most important part of your message. Make sure that you list EVERY single thing that you have done to your car so that we can all go \'oooh!\' and \'Ah!\'. Please make your sig consistently longer than anything else you post. Please include your lengthy sig with EVERY single post you make during a reply, even if you only reply with a monosyllable grunt.

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              • #8
                oh, and another note...volume and velocity can be interchanged almost...you just that the flow speed and multiply by the cross-sectional area of the flow (like in a pipe) and then you have the volumetric flow rate.

                come on, i know you have questions, ask, ask [img]smile.gif[/img]
                Your sig is the most important part of your message. Make sure that you list EVERY single thing that you have done to your car so that we can all go \'oooh!\' and \'Ah!\'. Please make your sig consistently longer than anything else you post. Please include your lengthy sig with EVERY single post you make during a reply, even if you only reply with a monosyllable grunt.

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