Speedmaster Flow Limits

Newbomb Turk said

I assumed the 40 was your top cut and the seat is the 50. IMO 88-89% is 45 degree seat throats. IMO you need to be 90.5-91% with a 50.

I’ve said the other statement many times. You can increase the flow and not gain power. Or lose it.

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I will eventually get there with the throat size. Starting small and working my way larger. This is the 5th or 6th valve job so far on this port, but also the best as far is the flow bench is concerned. The tight throat controls the flow separation longer. I realize that is not the ultimate goal, but it’s the goal for the moment. Thanks.