Since that catastrophic failure, I installed the BBK and stroker crank along with the good American made springs.
I have flogged the Hell out of this thing more than i ever have. With no issue.
My opinion is screw that 39T on the Yerf. It has 0 top end with it installed, and the RPM is too high for my liking.
And as for the valve springs. No doubt in my mind what was happening.
Not looking to argue, just providing you proof of my claims
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My Yerban assault vehicle: 2.2mm stroker crank, 62mm Nikasil cyl, Taida large vavle head, American made valve springs, ported intake manifold, TM 28mm carb, stock CDI, Bando coil, TK exhaust, stock CVT except for the 14g sliders, 13/40 internal gears, 16T drive, 31T axle sprocket, 22" rear tires, and ONE BIG POTATO CANNON mounted on top..........
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