If you are turning the crank and replacing bearings the deck height can change. I would torque the cylinders down with a torque plate to simulate actual conditions and check it at 2 positions per piston.
If the ports are larger than the 750 your going to lose the low end and have driveability problems. I suspect your going to have better midrange and highend performance, especially if the valves are larger. Larger valves = more cam lift without changing the cam. I like an oversized intake flow myself although some have posted that teeny tiny intake ports are better.
How the F*&K do you guys know this stuff? Seriously - you guys have to have extensive hands on experience or a room full of tech books to recite this info lickity-split
A little bit of all of that really. Mostly car engines for me, bikes are similar enough. Bikes do have tighter tolerances and the aluminum does react differently than a steel engine does. I have read many manuals and tech books cover to cover, including my Suzuki factory manual. A stomping good read for sure.\\
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