36 tooth sounds familiar for cams in general.
I might be wrong but I think whatever you do on a motorbike engine is detrimental to top end, since those engine are very optimised.
Delaying the inlet would have the effect of "atkinsoning" the engine though, wich should be good for MPG but bad for high speed.
QUESTION :
Is your goal to vastly improve FE while not affecting top speed ?
OR
Is your goal to reach a given MPG (100 IIRC) and try to get as much speed as possible ?
If you are looking for the second option, the compromise is gonna be trickier I think ...
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