The bore of the cylinder times the stroke gives you the swept volume of the cylinder. A MAN B&W K90MCS is an engine with a bore of 900 mm and a stroke of 2,300 mm. therefore 900 mm X 2300 mm = 2.07 cubic meters is the swept volume. From that, it delivers roughly 4,300 kw per cylinder. (http://viewer.zmags.com/publication/d83 ... 83cd0f8/12
The second part...
Well you can do it by calculation. Putting bearing shells in the connecting rod, torquing them up, then measuring bore; then measure the crank throw, the difference gives you the clearance.
Another way is to use Plastic Gauge, and this website gives you an explanation on how to use. http://www.plastigaugeusa.com/how.html