What cam were you using and what rear sprocket.
I am thinking of of getting titanium valve retainers from scooter elements for 45 bucks.
The A12 cam has way more lift than stock and I am concerned about bending valves.
Did your ncy head have heavy valve springs?
I thought the stiff springs would prevent valve float.
That is cool that you were able to save your cylinder head.
Check out on you tube camshafts at 14,000 rpm.
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