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Thread: About Dyno Room Exhaust

  1. #1
    Senior Member
    Join Date
    Nov 2005
    VA, US

    About Dyno Room Exhaust

    I am not looking to install a dyno.
    However I want to install an exhaust fan that will move enough air through a 5-6" hose over the header (similar to a dyno room) so I can run bikes at idle, rev them up some but no wide-open runs.
    Any idea the CFM rating I would need to do that?
    A guy passed me in the traps, ran off the track & plowed into a cow pasture. He stood up, hay stuck in his hair. I asked are you alright, he said "I, didnnnt see the fin fin finish line!" True Story

  2. #2
    Senior Member
    Join Date
    Jul 2005
    United States
    displacement of engine in cubic feet X maxRPM/2 for 4-stroke + some for safety should get you close.
    Insert your favorite movie line here


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