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Calculating required exhaust port area?
Posted: Sun Oct 14, 2012 10:32 pm
by Wayne Miller
How do you calculate an exhausts port area?
Lets say I want max power at 10000rpm and I have an exhaust port duration of 190 what do I need to do next to determine what the port area needs to be?
Re: Calculating required exhaust port area?
Posted: Sun Oct 14, 2012 10:41 pm
by wezly
Re: Calculating required exhaust port area?
Posted: Mon Oct 15, 2012 12:06 am
by Wayne Miller
The books usually tell you to measure your chordal width to use in determining you port area. I want to do it in reverse and determine the required port area and from that determine the chordal width. ie this is my cylinder volume, this is my port duration and this is my port open time at this rpm what is my required port area. Im guessing there is a formula somewhere as you can do this kind of this in some of the available software.
Re: Calculating required exhaust port area?
Posted: Mon Oct 15, 2012 8:10 am
by Avantone
Are you after port area or mean port time area?
Re: Calculating required exhaust port area?
Posted: Mon Oct 15, 2012 9:39 am
by Wayne Miller
Hi Tony,
Im after port area for now :fb: