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here's Help text from v4.00 :no pressure wrote: ↑Sat Feb 10, 2018 1:48 am I searched and could not find an answer so......
Can someone please tell me What Z-factor Lift is?
and Intake time Area?
Thank you. attached pic
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Intake Mach Z-Factor = 46.3116 % SOS Exhaust Mach Z-Factor = 66.5537 % SOS
Note : Mach Z-Factor definition = PerCent % of the Speed of Sound ( SOS ) at the Valve's Curtain Area
Mach Z-Factor Valve Lift = calculated from Speed of Sound velocity thru Valve Curtain Areas
System Flow Valve Lift = calculated from Intake and Exhaust System Flow and Valve Diameters
Port Flow Valve Lift = calculated from Intake and Exhaust Port's Flow and Valve Diameters
Curtain Flow Valve Lifts = calculated from Flow thru the Intake and Exhaust Valve Curtain Areas
Time Area Valve Lifts = calculated from User's Camshaft Durations, Curtain Areas, RPM Range
v4.00 to be released soonThanks Larry, I'm still on version 3.98. How do I update?
yes, if Intake or Exhaust Time-Area RPM Range is lower , it is an indication Cam Durations are too smalldhidaka wrote: ↑Sun Feb 11, 2018 5:37 pm Larry,
Assume you are limited in camshaft lift. If your intake or exhaust "time-area RPM" is much lower than intake or exhaust "system RPM" is that an indication that more camshaft duration would help HP/Torque? Say, 8000RPM vs 9200RPM. Also, what is a good target for intake and exhaust "Mach Z Factor"? My PipeMax says 0.628 intake Mach Z Factor. If that is too high, how does one slow it down?
i just released PipeMax version 4.10no pressure wrote: ↑Sat Feb 10, 2018 8:55 am Thanks Larry, I'm still on version 3.98. How do I update?
Is a lower Mach-Z factor better? Or?maxracesoftware wrote: ↑Sat Feb 10, 2018 3:48 am ]here's Help text from v4.00 :no pressure wrote: ↑Sat Feb 10, 2018 1:48 am I searched and could not find an answer so......
Can someone please tell me What Z-factor Lift is?
and Intake time Area?
Thank you. attached pic
Capture.JPGCode: Select all
Intake Mach Z-Factor = 46.3116 % SOS Exhaust Mach Z-Factor = 66.5537 % SOS Note : Mach Z-Factor definition = PerCent % of the Speed of Sound ( SOS ) at the Valve's Curtain Area Mach Z-Factor Valve Lift = calculated from Speed of Sound velocity thru Valve Curtain Areas System Flow Valve Lift = calculated from Intake and Exhaust System Flow and Valve Diameters Port Flow Valve Lift = calculated from Intake and Exhaust Port's Flow and Valve Diameters Curtain Flow Valve Lifts = calculated from Flow thru the Intake and Exhaust Valve Curtain Areas Time Area Valve Lifts = calculated from User's Camshaft Durations, Curtain Areas, RPM Range
these are good baseline Mach-Z factor'sIs a lower Mach-Z factor better? Or?
Brian Hafliger
IMM Engine & Dyno
Thank you!maxracesoftware wrote: ↑Mon Nov 19, 2018 8:20 pmthese are good baseline Mach-Z factor'sIs a lower Mach-Z factor better? Or?
Brian Hafliger
IMM Engine & Dyno
Intake System Range = from around 40 to 50
Exhaust System Range = from around 50 to 60
on the Intake System Range , typically below 40, the Average CSA is too large = lower Port velocity FPS
above mid to high 50's , the Engine will have increasing Pumping losses and HP will fall off