Has anyone seen the current issue of "classic motrocycle mechanics" with 2 Suzuki 750 on the cover?
It's got a good bit inside about Honda RCB endurance racers. These were built from SOHC 750 base and represent the final most advanced research that Honda did on this motor I believe.
It was built with a DOHC top end but you can still see the origins of the crankcases etc in the photos, it even shows the conversion of the primary drive to gear type inside in one pic.
After this they were moved to CB900 basis as the race regs changed to allow only production based motors and this head / barrels etc had no street equal.
The nearest thing for the road that seems closest to this hybrid was the CBX750 that has gear primary, narrow angle 16 valve head, alternator on top of gearbox and even a slipper clutch as standard.
It's worth a look to see where the original 750-4 got to.
