[NeilBlanchard]

I stand corrected on the crankshaft, It didn't look like there was room for the big end journals below the engine case.

So, 2 valves per cylinder. I am surprised the water jacket is not between the cylinders - the center cylinder will have significantly more heat in the portions adjacent to the outside cylinders.

What is the circular depression in the left center of the larger depression in the top of the pistons?

Intake valves are closer to the cam chain and the "squish" area is in the center of the piston. It seem there is plenty of space for flame spread, but also a fairly large volume of tight clearance around the edge of the piston, especially on the exhaust side of the engine.

Exhaust valves are toward the transmission end of the block. I wonder if the have designed a heat transfer between the exhaust and intake tracts in the head?

I could be wrong, but it looks like there is injection into the intake, just inside the head. Where are the spark plugs?