Which is the stronger engine?
 

Hi
I'm toying with the idea of building a lightweight air-cooled track day bike. I've had a 1991 750ss (Mikuni) and a 2000 900ss ie years ago, but which is the stronger engine between the 750 and the 900? There must be many years of accumulated knowledge by now.

I suppose logic dictates that the 750 is less stressed but is the bottom end different? I can't remember.

Anyway, let me know what you think!

A