User Tag List

+ Reply to Thread
Results 1 to 8 of 8

Thread: interesting vid on facebook. IKE Engineering

  1. #1
    Bodger

    Join Date
    Mar 2009
    Location
    sussex
    Posts
    148
    Thanks
    5
    Thanked 8 Times in 8 Posts

    interesting vid on facebook. IKE Engineering


  2. #2
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    57
    Posts
    25,130
    Thanks
    312
    Thanked 2,478 Times in 2,252 Posts

    Re: interesting vid on facebook. IKE Engineering

    85 cfm would of been a standard port, an average nothing special big valve head (most are wrong shape) will flow 105cfm, 120 cfm is a good flowing big valve, a really good one will flow 125ish cfm all these numbers @10" depression.
    Last edited by Graham; 22-11-2020 at 14:14.

  3. #3
    Racer Decade Plus User rallyrob's Avatar

    Join Date
    Apr 2010
    Location
    Middlesex
    Age
    56
    Posts
    2,663
    Thanks
    268
    Thanked 222 Times in 209 Posts

    Re: interesting vid on facebook. IKE Engineering

    That's interesting, not that I really understand it. But The super flow gauge showed 117cfm but on his laptop it showed
    122cfm. So which is it? And also does it matter what cam is in it, as to valve lift affecting flow?
    Last edited by rallyrob; 13-02-2021 at 17:14.

  4. #4
    Racer Decade Plus User rallyrob's Avatar

    Join Date
    Apr 2010
    Location
    Middlesex
    Age
    56
    Posts
    2,663
    Thanks
    268
    Thanked 222 Times in 209 Posts

    Re: interesting vid on facebook. IKE Engineering

    Also really liked the video under that one re: The accuspark Xflow competition dizzy, being tested by Bestek.
    Last edited by rallyrob; 13-02-2021 at 17:12.

  5. #5
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    57
    Posts
    25,130
    Thanks
    312
    Thanked 2,478 Times in 2,252 Posts

    Re: interesting vid on facebook. IKE Engineering

    Quote Originally Posted by rallyrob View Post
    That's interesting, not that I really understand it. But The super flow gauge showed 117cfm but on his laptop it showed
    122cfm. So which is it? And also does it matter what cam is in it, as to valve lift affecting flow?
    his laptop was probably had a correction factor for temperature and humidity.

    regarding the cam yes and no, you should consider the cam, no point having a head with really good flow at a valve lift way beyond where the cam goes, especially if the flow suffers at lower lifts. you also need t bear in mind a valve is only at full lift for a moment. but its at mid lift twice

  6. The Following User Says Thank You to Graham For This Useful Post:


  7. #6
    Pole Position Decade Plus User
    Turbosport Administrator
    Miniliteman's Avatar

    Join Date
    Feb 2004
    Location
    the Netherlands
    Posts
    4,904
    Thanks
    38
    Thanked 614 Times in 561 Posts

    Re: interesting vid on facebook. IKE Engineering

    Quote Originally Posted by Graham View Post
    you also need t bear in mind a valve is only at full lift for a moment. but its at mid lift twice
    If you look at the cam of a camshaft (especially a std-ish cam) the duration of a valve at or near max lift is actually quite long. Whereas it will fly past mid lift (half lift) quite fast.

  8. The Following 2 Users Say Thank You to Miniliteman For This Useful Post:


  9. #7
    Spanner Monkey

    Join Date
    Jun 2015
    Location
    Australia
    Age
    50
    Posts
    295
    Thanks
    8
    Thanked 10 Times in 10 Posts

    Re: interesting vid on facebook. IKE Engineering

    Good point miniliteman mid lift is good but valve lift from 300 to 500 inch lift is more important I've try different heads and my motor made more power with more upper lift flow cheers mario.

  10. #8
    Pit Crew Decade Plus User Group4_Mark2's Avatar

    Join Date
    Dec 2004
    Location
    Ireland
    Age
    53
    Posts
    1,781
    Thanks
    31
    Thanked 72 Times in 58 Posts

    Re: interesting vid on facebook. IKE Engineering

    Something to consider

    Multiply the lift by the flow at that lift and graph the result plotted against the cam duration on the x axis. The one with the biggest area under the resulting curve should theoretically have the most flow overall and power. There are probably other considerations such as the momentum of the air flow, swirl etc.
    To finish first, you must first finish

+ Reply to Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts