if you have ever wondered what torture the valves/springs need to take...
check it out...https://www.youtube.com/watch?v=_REQ1PUM0rY
notice the valve stem shakes back & forth at high RPMs
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if you have ever wondered what torture the valves/springs need to take...
check it out...https://www.youtube.com/watch?v=_REQ1PUM0rY
notice the valve stem shakes back & forth at high RPMs