Another dumb question to tell if my blaster has been bored

take the head off its a wiseco clean the number in the middle of the piston off write it down and look in a rockymountin catalog at wisco piston the number should b n ther eitll tell u what size the piston is
 
just making sure you know, maybe you do, maybe you dont, only saying this because it is the magical .040, if its bored .040 over, its not a 240cc. but yes, measuring the cylinder is the only way to tell.
 
just making sure you know, maybe you do, maybe you dont, only saying this because it is the magical .040, if its bored .040 over, its not a 240cc. but yes, measuring the cylinder is the only way to tell.

what is the bore over for a 240cc kit? is it higher than .060. do you have to buy it as a special kit because rocky mountain only sells up to .060.