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hey pampered Z ------ you need to be very careful to check every cylinder for your piston to valve clearance
when we have a motor with issues and we need to get more we do a simple trick with a degree wheel and the valve timing - @ between 5* / 15* is the spot that the valves on over lap are at their closest -- if you use checker springs and rotate the motor you can actually measure the total distance between the valve and the piston in its cycle and adjust the cam deg if you want more bottom advance it and use the exhaust valve as your guide to how much you can with knowing .100 is the ruel -- don't know if you follow if not i can go into more detail its not for a novis to try but you sound as if you have done this sort of work and this trick is a value to those in the know about getting the most of what you have to work with -- jz
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