Latent heat of vapouristion at Work

[XPC66]

We had a discussion recently about how cylinder temps rise with lean mixtures. This video should clearly show the cooling effect of fuel entering the combustion chamber.

here

 

[rmoe88]

Wow! that is very cool. Ive never *seen* the inside of a running engine, thanks for the video!

One question i have, whats with that lasting flame that looks like its almost ON the intake valve?

 

[XPC66]

That's the residual fuel locked in the ice igniting.