Real volume engine

Hello everybody.
I want to know what is the real engine power.
According to my rough calculations, the width of the cylinder walls is 7 mm, and the height is 3.5 mm.
I would be more glad if information was displayed about internal cavity of the cylinders, and not on their external dimensions.

Hmm, how many synapses does it take to think you’re a bot?


err… four?

Wrong. the answer is clearly Woodchuck.

Unless it’s multiple choice, in which case it’s always “C”.