I tried googling how to figure engine size and some stuff came up but i still cant seem to get it right. I have a esr 370 with a 78mm bore (on first bore) and a 5mm stroke crank can anyone help me?
Is the 77mm you used for stroke here a stock size stroke or is that with my 5mm stroke?Basic formula:
Bore x bore x .7854 x stroke...example for a 370CC = 78MM x 78MM x .7854 x 77MM = 367.93CC
Carlos.