abc

[jakestein]

hi i would like to know what is ment by a b or c pistons?
i no that you need do do an over size on worn cast iron bores and get the right piston to match.
but the gg has a crome plated bore or the like so why the different piston sizes??
when you would just get it recoated to the original specs.

 

[bobr]

a,b,c.

each cyl. will be slightly different in size. they match the best pist. to each particular cyl. most bike manufacturers do this now. and if your getting a cyl. replated you would send the piston with it so they can plate it to "match" no matter the size. i send cyl's. out to be plated all the time.