AHHH HELP DAMNIT Engine swap question of doom

[Spanker]

:hi:
I have a Hanway Raw, the motor on it is a 139 FMB, it is a 50 cc diplacement piston . Do you think i can put a 124 cc piston, 124cc cylinder head and cylinder on it ?

or the crankshaft (or even the connecting rod) will be too short ?

:clap:

Please be fast, i need to go to work tomorow, and i have tons of 124cc motors with wasted clutch systems and only one 139 FMB with a wasted piston and dont know what to do !

Thank you in advance !

[sirmaxwell]

:hi:
I have a Hanway Raw, the motor on it is a 139 FMB, it is a 50 cc diplacement piston . Do you think i can put a 124 cc piston, 124cc cylinder head and cylinder on it ?

or the crankshaft (or even the connecting rod) will be too short ?

:clap:

Please be fast, i need to go to work tomorow, and i have tons of 124cc motors with wasted clutch systems and only one 139 FMB with a wasted piston and dont know what to do !

Thank you in advance !



I can see this is old by now but in case you didnt figure it out already I am guessing the 125cc cylinder/piston /head will not fit because the cylinder most likely will be of too big a diameter to fit the crankcase of your engine. They might make big bore kits for your engine going up to around 90cc--and like most 50cc a 90cc big bore is the biggest you can go without a new crankshaft and possibly splitting the cases to shave off some material or otherwise widen the case--and in my opinion doing all that silly stuff with the crankshafts and splitting the cases isnt worth it and the big bore kits with just the piston and cylinder, maybe the head too are only worth it if they are fairly inexpensive because if they cost too much then getting an entire bigger engine like a 125cc for $200 to $250 is better. Hope this helps and you figured it out