Certainly not your average "rookie" coming on to the forum. What turbochargers are you thinking of using? I saw what pressure ratios, but have any idea on models?
Thanks, but us ignorant folks have to learn lessons slowly, and by ones, not in a bunch.
To answer your question, 'dunno' I'll know more later this week when I have read enough to be able to understand the language and ask stupid questions.
My 'thoughts' (which can be changed quicker than a minnow can swim a dipper) are based on what Zach Hamilton has told me, abt modest compression ratios, tappet cams, enough-but-not-too-much wind ....
Factor A: I can't have a wild turbo. When the boat flies, rpm will be limited, but if the turbo spools up, and builds 1500+ foot-pounds, when I hit the solid water a second, second & ½ later, something critical, like a propeller blade or even a shaft could twist or break. That said, I WANT some torque, so when the prop bites, there is no lag & loss of speed, plus starting back up again.
This means (to me) a small manifold turbo, waste gated at 1 or 1½ Bar, and a second, larger, addressable turbo, where I can tune for blue smoke when the seas are calm, the finish line is in sight, and I have lots of gas.
Think Spinal Tap and a gain knob that goes up to 11.
Scheid thinks I need a good two-stage turbo, or maybe 3 small ones. Dunno. He & I were spending time talking abt stuff that goes up and down, more.
What I don't want is sequential turbos that give me an unplanned shot of go.
If you have thoughts, I would be pleased to know them.