Hollow cams for the first Z1 models

Question.
I bought Z1 hollow cams on a sale, NOS never used. They are a little bit lighter than the later ones . Can they perform better because of their weight?
Willem
The Netherlands

I seriously doubt it. Cam performance is dictated by the lobe height and profile. Maybe, just maybe, in a full race engine with super light crank and rods, and no generator, hollow cams might contribute a tiny bit to throttle response. They might also run a tad cooler, for whatever that is worth. They might also let the cam chain last four or five miles longer.

:lol: :lol: :lol:
Worth $$ to a collector.
Steve

There is less weight to rotate so less (marginally) horsepower needed to move the cams. Also, the center of a shaft doesn't take up very much of the torque, so it's not really needed. That said, KHI had problems with riders breaking cams so they may have overdone it.