Expansion Chamber and exhaust

Discussion in 'Performance Mods' started by 210061741, Mar 2, 2010.

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  1. 210061741

    210061741 Guest

  2. professor

    professor Active Member

    I think there is an optimum length to the expansion chamber for your pipe. Isn't there some formula for 2 strokes? I seem to remember one (going into the "Way-back machine" for a bit).
  3. 210061741

    210061741 Guest

    Yes there are calculations
  4. thine82

    thine82 Member

    the video..

    the video is no good anymore on youtube please repost new site cuz i am into building my own silent exhaust... please i will post a video soon of how quiet it is ...
  5. ejp2fast

    ejp2fast New Member

    i second that!
  6. 210061741

    210061741 Guest

    Ok i will see what i can put together for you guys tonight.

    sorry the videos are down.
  7. danlandberg

    danlandberg Member

    Expansion chamber calculations

    Go to clickandbuild :whistling:
  8. 210061741

    210061741 Guest

    We used the click and build software.
    Not sure it's really the greatest.

    Anyway i wrote an excell spreadsheet to do all the math for you.
    And with this free cone builder software you can get the patterns for the pieces.

    I have this on a disk and i'll post some stuff later.
  9. danlandberg

    danlandberg Member

    That was just one link I could think of off the top of my head. There are more. Punch in expansion chamber and you find many more links to chose from.
  10. 210061741

    210061741 Guest

    4 sure you are correct.
    The good software cost a few hundred bucks.

    I guess i enjoy the math.

    My spreadsheets are just as effictive and requires basic imput
  11. danlandberg

    danlandberg Member

    210061741: Do you sell your spreadsheets or do you offer them on disk?
  12. 210061741

    210061741 Guest

    I will post a copy tonight.

    You will need microsoft excell to use it.

    I have to look it over and add some notes.
    There's a couple sections i need to work on still.

    This spreadsheet dose everythin.

    Port timing
    Angle area
    Time area.

    Expansion chambers.

    The section for the 3 stage chamber i still need to work on.

    I need a little time to write an instruction sheet and then i will upload it all so you guys can have it free.
  13. danlandberg

    danlandberg Member

    Thanks, I don't know if I have excell. This is wifes puter.
  14. 210061741

    210061741 Guest

    If you have microsoft word or microsoft office you probably have excell.

    Otherwise you can download a 90 day demo from microsoft for free.