For those who have made comments about the radius entry piece that Mike is using while flow testing his project 302 heads.

...It is NOT a Brezyinsky piece. It is home grown and cast right here in Colorado. It employs a very liberal radius and is adequately thick to encourage no "edge effects" from lesser radii designs.
Mikey, keep doing what you are doing and enjoying it too!
BTW - If one sees the manometers bouncing around, it is typically a sign of bi-stable airflow that needs to be addressed in the port, not from just changing the radius inlet guide.
Regards to All that like this kind of stuff,
HB2

Dissident