Hydrogen and Oxygen

I guess it wasn't cost effective to design the water jacket around the port?  Wouldn't you have a more consistent temperature?  It must not take much coolant to make a difference, since the passages look rather small?

A lot of extra weight (and crap) just to cool that damn cylinder head . . . I guess they call this progress?  I don't know why I care, since I'll keep going places on my 50s and 60s machinery anyway . . .

The proto-type liquid cooled Harley-Davidson MX (above).  I guess if all these marketing ideas would have hit on all (or at least 1) cylinder(s) . . . and these protos sold . . . sales could have been through the roof !  I guess that's why these companies keep trying new things, and implementing new ideas into their products. (Is that Larry Roeseler in the air ? . . . or Bruce?)