Quote Originally Posted by BTDT View Post
I have three formulae for transfer port diameter, and they never agree with each other

There's too many unknowns to make such calculations reliable.
Quote Originally Posted by cooper_dan View Post
My bachelor's and master's dissertation were based around fluid dynamics, simulation and modelling. One on IC cylinder head flow and one on external aerodynamics. Can be very interesting, but when it comes to transfer ports I would just stick with physical testing. Too many variables and life is too short
Yes, this.