I must have far too much time on my hands.
Stroke 53.975mm and piston diameter 61.493mm (figures off spec sheet)
(I measured close to these)
Volume of a cylinder = Area of base x height
A = pi x r2 = 3.14 x 30.7465 squared = 2969.9
2969.9 x 54.975 = 163270 cubed
163270 divide by 1000 to get cm cubed
=163.27 cm cubed (close to 160cc)
