There’s lots of videos of people doing big bores and stroker cranks and things to build motors on the internet, but what about a guy chopping up a single cylinder engine and rebuilding them as twin cylinder or even 3 cylinder motors? What about converting a 4 stroke to 2 stroke?
This guy is doing that and more, and with 4 stroke engines so he has to do all the camshafts and valves etc as well.
It’s in Indonesia or somewhere so his work is a bit rough around the edges but it all works.
Here’s a link to his Youtube channel:
https://www.youtube.com/channel/UCYzXoHko5UdtqEYwJODaOyw/videos
Some of his builds, some of them are spread over several videos so check his Youtube channel for other episodes.
@airborne_arms_co This might interest you.
Allen Millyard is worth having a look at he has created some incredible machines with pretty limited equipment https://www.youtube.com/watch?v=FnXUx4cYdHA