xsport engine

[weller2005]

alright i was just wondering how come some xsport engines say fym on insted of xsport are these still xsport engines ?? whats the diffence

[xsportjim]

alright i was just wondering how come some xsport engines say fym on insted of xsport are these still xsport engines ?? whats the diffence
fym ones are a shorter stroke :thumbs:

[weller2005]

fym ones are a shorter stroke :thumbs:
so does that make them quicker or slower :confused: im dumb sorry

[Despise]

so does that make them quicker or slower :confused: im dumb sorry
depends on the piston size

[weller2005]

oh ok kl they still good engines ??

[Despise]

oh ok kl they still good engines ??
yea its fine.

all ***** at the end of the day:roll:

[xsportjim]

fym ones are a touch quicker of the mark,but the old (longer stroke) xsport has a little more at top end. fym onnes are 54mmX54mm