If it is reverse shock loading as stated, then that action need to cease. That will knock the teeth off. Kickbacks will cause it too, so timing must be right, and mixture too.once started, warm up the engine at a relatively low rpm, and avoid blipping the throttle hard until the oil has warmed and thinned to a reasonable viscosity. Never ride hard until it is good and warm.We have 15 lb. music wire pump springs that relieve quickly on the up-stroke, but the down-stroke of the pumps are unprotected.We also have the Ace Oiling system mod, but that is proprietary, and requires that the timing cover and all associated oiling system parts are sent in for mods, and the owner would need to increase the flow capacity of the drainback holes in the engine case to prevent oil flooding of the top end from the much higher oil delivery volume. In certain instances, an auxiliary oil return line from the tappet galley to the oil tank was needed to handle the overflow at higher rpms. We don't talk about this much, but our top builds have it.
Guys bike sezied up day after practiseHe is gutted.
Oh, very sorry to hear that. Maybe he was able to get it fixed before the actual races?
No chance, still raced his Kawisaki 500 though.
I am curious as to how and why Guy keeps seizing motors......
He is too!