These engines are Great ! Not everyone can make an engine that actually runs. Rough but yes they work! Thanks for sharing. Wish there was more context about who made them and where and how and so forth. Awesome video.

Thank you for making this video

1:29 It's my engine. It's a pity you didn't link to the original videos :/ Try to make your own and you will see how much work it costs.

Fantastic

2:53 It's my engine

Can someone explain how those engines with one pushrod work???

Yeah stealing mine and a bunch of other people's engine clips to without any regard to giving credit. You should be ashamed.

If you don't want people to share your video clip then don't put it in the internet at all

Stolen