Hm...
I still have a little bit of a problem with "more open time / area" + "less overlap" = better / more efficient... Please don't take this as a criticism!
I fully understand that you don't want to give away details at this early stage, but out of curiosity:
- What will be the purpose of this engine? Daily driver? Racing? If racing, what kind of? Drag racing? Circuit?
- Will the engine be turbo- oder supercharged?
- Will it be a completely new engine or a new head bolted to an existing block (brings its own advantages and difficulties)?
And:
- What do you want to prove with this project? That it works? Or that it is better than existing solutions?
- Did you do work with an engine simulation software, e.g. Ricardo Wave, GT Power or AVL Boost to calculate your port areas, timing, mass flow, flow velocity?
Again: Best of luck (from a guy who is atm designing a new crank-/transmission case for a motorcycle cylinder head & engine internals)!