[g.l.amour]

that is totally against the principles of rotor and billA. there is no need to have increased flow resistance near outlets.

i thk i'm quoting billA here, who said that in a diameter of 1 inch around inlet there should be high resistance + turbulence. every where else in system and block, the lowest resistance possible should be sought after. so actually rotor's vdfc is a good shot. what puzzdre is fabricating the last days seems mighty promising also.