does any one know what the difference is between the 2 motors the 500 foreman and the 500 rubicon. i know one is water cooled and the other is air cooled but what im really wanting info on is the jug, piston and sleeve. i found a bbk that uses a sleeve for the 500 rubicon to bump the displacement up to 550 cc (75 cc more than a stock 475cc foreman and bigger than the current 506.5cc bbk i have now) and was wondering what it would take to put it into a foreman engine. i was hopeing maybe some of guys on here that do service work on these honda bikes could give me some heads up on whats different between the 2 engines that would make it to where a 550cc rubicon piston and sleeve wouldnt fit into a 500 foreman engine.
here is what i think would have to be done to make it work get bbk for rubicon piston, sleeve, and ring. machine jug in foreman engine to accept new sleeve for 550cc rubicon, machine crankcase where jug bolts to it so bigger sleeve can be pressed in, machine head to accept the new diameter of the 550cc piston and sleeve. possibly have to machine piston crown to the shape of the cylinder head valves and combustion chamber i dont know what the diff is between the 2 bikes cumbustion chamber shapes where the valves are.
08 black 700 rhino (sold)
03 yellow 450s (sold)
07 black 500 (sold)
i no longer own any hondas
but they wont be forgotten especially the black 1
10 750 blue nocturnal brute