These videos aren't about blowing up engines. The novelty is the see thru aspect.
Too bad the 'derp and other OHV engines have all that mess of valves, a valve cover, rocker arms and pushrods in the way of having a visible cylinder and the complete combustion process in view...
For the acetylene, he should have got the proper burn going, knocked out the flame, then fed it to the engine.
What would that have done, genius?
More like Mr. Never Satisfied...
Don't whine here, Joe. Send a message to that guy in the video. He's proven that his feeble brain gets all the great ideas from his comments.