Andy wrote:If I had the money and the facilities, it would be a 500cc V4. Everything about it is right... from the physical size of the motor, to the power output, which I guess is why it was the premier class for so long.
If you were to build one from scratch using MX barrels as a base, up to 576cc would be available. 160hp would be a realistic goal. Any less would be a waste of effort, much more would become financially unviable.
That sounds a whole lot like experience talking.
Where would one find the cases 2 cranks and balancer for such an experiment?