Hey Gang. I'm taking my bike to the 1/8 drags next weekend and want the old girl dialed in to perfection, or as close as I can get. This thing really flies but I have a couple little things I'd like to clear up this week before letting her wind out.
Here is my set-up; I have about 250 miles on the 810 kit, Kz750 cams and intake valves. Ported and polished 650 head, pipe, Mikuni 28's and velocity stacks. The springs are from a GPz 750 and I had to open the seat are a in the head to handle the bigger 750 valve seats on the intake side.
I am noticing a periodical flat spot around 5-6000 rpm (only when under full throttle, only when it is hot) and the occaisional popping I am getting through the #3 carb is possibly indicating a tight valve as the Dyna coils/ignition are working fine. The carbs are perfect as they came from Wired George.
I would just like to confirm the valve clearances with this cam/valve set up. I will be double checking every valve this week and swapping shims if necessary. Will the upper end mods I've done have any bearing on factory Kz650/750 clearance settings?
Cheers-Colin Firth - Ontario Canada
'77 Kz650/810 Wiseco
-1977 Kz650 Custom bought new by brother. Now with 810 kit, GPz750 cams, intake valves, Mikuni 29 smoothbores, velocity stacks, Dyna Igntion, MAC pipe and other goodies.
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