Flow and the Type of Flow...
Runner Length, Size, Configuration of the Runner restricts at various speeds.
Some work better than others.
Airflow behaves differently in a Carburation system than a Direct Fuel Injection system.
Carburated you have both Fuel and Air mixing, moving, twirling and tumbling which behaves different than just air alone.
Hi Dan,
Yes, I understand this and how it applies to N/A engines. Thank you.
......But I'm still trying to find out about an application like the Allison and Merlin V12's.
I want to know why when the intakes have been pressurised with boost from the supercharger why would runner length, diameter, and to a certain extent shape for good flow matter.