I need help with fundamentals of high-performance four-bangers, as I've never modified/built one before. This is for my F-class blown/fuel lakester (182 c.i., ~4" bore, a little under 3.75" stroke). To attain my goal of 4 HP/c.i., simulations show it needing to spin ~10,000 RPM (keeping boost within reason, vintage-look blower with no intercooliing, and on alky only). So... I need to learn about keeping this "vibrator" in one piece. Is it a 'given' that I use a flat crank, or does some arrangement of 90` offset throws have any "smoothness" advantage? If flat, is there any precedent for other than having #2 and #3 throws in-line?
Note: Think clean-sheet-of-paper with no restrictions, since crank and cams need to be from billets anyway.
Hmm... if there are literally no restrictions, I guess I shouldn't necessarily assume crank throws at multiples of 90 degrees, huh?
C'mon, help me think out-of-the-box on this!
Lots more questions, but that's it for now.