[Egg Nog]

Originally Posted by henk4

sure but have you calculated from what displacement that will come?

The model's engine has an actual displacement of 103cc, so it's not technically perfect. He's excused.

Long Way:

Real 312PB Bore x Stroke = 78.5 mm * 51.5 mm

So....

π x ((1/2)(1/3)(78.5mm))^2 x (1/3)(51.5mm) = 9231.51mm^3 per cylinder

9231.51mm^3 x 12 = 110778.1mm^3

= 110.8cc

Short Way:

2991cc / 27 = 110.8cc