Watch An Engine Combustion Cycle Through A Glass Head

While we have seen a clear engine cover in use before (on a two-stroke engine, rather than a four-stroke), we’ve never seen the combustion cycle quite like this before.

Using a glass-topped lawn mower engine, these guys produced some stunning footage, with a 4000 frames-per-second look at the combustion cycle. That’s 150 times slower than real time, in case you were wondering.

Sit back, relax, and prepare to be mesmerised…