I suspect that we can agree that a 4 cylinder 600cc, 85hp @ 11,000rpm motorcycle engine is not the best choice for a fuel economy bike, and no amount of internal engine modifications will do all that much good without spending more money than it is worth. One would be much further ahead buying a used bike that is more suited to the task.
As I own the bike allready and my choices are sell it for peanuts, watch it rust away, or streamline it and see what that does, I have chosen to streamline it to see what a sport bike would perform like today if the FIM had not baned dust bine fairings in 1957...
If I can get close to 100mpg in the Vetter challenge, and get into the 150mph club at Bonneville then mission accumplished.
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