wat displacement is my motor

[02400exer]

660 raptor bored .80 over what cc"s does this come out to

[stalefish_132]

pretty sure thats a 686 raptor you have...

[GPracer2500]

I came up with 670cc. 2mm over would be 686cc. 0.80mm over is a wierd size though...what piston is that?

ETA: Wait...it must be .08 inches over which would be 686cc (2mm over).