F22 head

K20a head done and started a new project. F22.
it's a simple design head, straight port, without flow channels.
a speed analysis tells me that there is not too much gain on this head, no bebds to work on, no divider for the valve guide to channel the flow to avoid the divider...etc...  very simple design.
OEM flows 234CFM at max lift..  achieved 251-254CFM. i don't have a spare head to go further on the design, so this numbers were gained on the customer head directly. no trial and error this time.

working on it, the shaft of the grinder broke .

254CFM design. worked on some high speed areas, not too high compared with the previous head i've done, k20A.