If I understand correctly, you mean that if you rev up high any engine with valves on it, shall you mess up the engine?
My answer is no, and yes. Bear with me.... an engine uses valves to control the intake of fuel and expulsion of exhaust, if you rev it up, you won't damge the valves instantly, so you can do that.
But if you leave the engine revved up high, or keep it revving high for a long time, keep in mind that the valves are opening and closing many times per second (try 50 times per second), therefore the valves will start wearing, and yes you will eventually mess it up.
Hope my response helped...
Yes and no. The point of a governor is to limit the RPM's of the engine. Removing the governor in tiself does not hurt a thing, but then you run the risk of over-reving the motor and chance blowing it up. Remember, just because a motor will spin that fast does not mean that it was designed to!
Yes, the valves generally will collide with the pistons. You can imagine the rest. If you where super lucky, there is one spot where all of the valves would be closed. ( unlikely!)
yes. ECM has protection on over-reving the engine...
Yes, but not only valves will be damage. Yes, but not only valves will be damage.
Yes, reduced back pressure in bad for valves
do you mean is a Honda engine an interference engine? in which the valves will get bent by the pistons if the timing belt fails? then yes.
Yes both are possibilities. Also axle, driveshaft, .....
The intake valves can hit the exhaust valves if the timing belt breaks, so yes.
yes if t belt breaks it usually bends valves
Yes valves can bend if the timing belt breaks.Yes valves can bend if the timing belt breaks.
Yes, it has 2 valves. 1 intake and 1 exhaust valve on this single cylinder 4 cycle engine.
Yes.