Bernoulli and 350 ft/s, 146 cfm/in²

273 said

So basically cause soft choke your mcsa can be smaller then you think it is. That makes a lot of sense now, that's a big puzzle piece for me thanks.

Makes sense why depending on port design, maximum tolerable calculated velocity varies cause of hidden effective mcsa's.

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Let me make the disclaimer that this is not undisputed fact. I don't want to present it that way. This is the way I look at things and I could be wrong. It just explains a lot of what I see on the bench and fits with other things I've read. We can continue this discussion. I enjoy the theory. Got to go work on my daughter's house for a while.