Hay guys the VV's are a mine field!!! the early ones got same carbs as the jap spec non VV 102.5 mains but have a throttle sensor on the right side (red,green,black wires) later ones 90 mains. the Valve mech operates between 8000 n 10000rpm this varies between bikes,mine about 10000, you should clearly hear the actuator work. The top end cam has the same profile as the nonV and its the low cam that fills the bottom end out making the VV quick off the mark, you cannot tune the cam profile as they are tied into each other and the ignitor unit switchin between the two,where as you can tune the nonV much easier,you can slot the cam sprokets tho and play about that way.Ive got an early M model, this has VValves on the inlet and exhaust cams, other models only have a variable inlet cam. If you are going to do valve adjustment be very carful as you have to adjust the valves for low side clearance, high side clearence and sub rocker arm adjustment(this is the clearance between high and low followers) and these adjustments must be within 0.05mm of each other!!!!!!!!! i think there is 24 adjustments for each cam!!!!!!!!!!!!!!!. The standard exhaust is restrictive, bad welds at the top(inside) and there is a steel inner pipe within the 2inch collector, this tyers and suspension are the best way to make em quicker. mine made 58bhp with a race can on but with the big bore, head flow and full system makes 65 true bhp but runs on superunleaded,story is if you working on your own bike you need to get as much info on that model and most jap imports VV's did'nt get serviced by the importer cuz they did'nt know how!!!
