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  1. #1
    ou812's Avatar
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    Would air flow be greater if.....

    The 1st 6-8" were 3" at the openning & the other 5ft were 4" to the SC
    Or
    The 1st 6-8" is 4" & the rest is 3" to the SC?

    I know 4" all the way is the ticket but i'm curious.


  2. #2
    From my limited understanding the 4" opening to a three 3'' would yeild better results.

    Sort of a funnel effect...compessing the air...speeding it up prior to entry into the SC.

  3. #3
    I don't think a funnel effect is going to do much good. The SC wheel is sucking in a lot of air already, so just keep feeding it a large volume of air. If you go from 4" to 3" you are going from a larger volume of air to a smaller volume of air for the SC to use. I think sticking with the 4" intake the whole way would be your best bet.

  4. #4
    ou812's Avatar
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    I figured the 4" to 3" tube would be worse. But what about a 3" openning to a 4" tube?

  5. #5
    inteljd's Avatar
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    FYI - I'm in the process of installing a 3" for about one foot after the Supercharger then stepping to a 4" for about two more feet then a 6" for the remainder of the four feet to my hood.

  6. #6
    ou812's Avatar
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    Quote Originally Posted by inteljd View Post
    FYI - I'm in the process of installing a 3" for about one foot after the Supercharger then stepping to a 4" for about two more feet then a 6" for the remainder of the four feet to my hood.
    I'd call that a funnel! Whats the advantage of doing this?

  7. #7
    compressing the air

  8. #8
    Anyone remember the movie Pale Rider?..the scene...Sean Penn's character is explaining to the young hottie how the water monitors work...

    "up the valley we got the creek falling into a length of 3' pipe...that runs down hill then goes into a 2' pipe. That goes down hill till it goes into a 1' pipe and so on....by the time the water hits the monitors I've got 200psi..."

    ...or something to that effect.

  9. #9
    Vman's Avatar
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    Water flowing downhill into a series of sequentially smaller diameter pipes is a little diffent than airflow...

  10. #10

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