Stihl 064/066

[skadi]

Hi everyone, Recently picked up a Stihl 064. The seller said he had replaced the crank case with an 066 crank case, and put the 064 p&c back onto the 066 crankcase. The saw runs fine, but is there anything I need to watch out for in the long run? Also will a BB066/660 p&c fit fine into this old 064? always on the hunt for more power... not that I need it

 

[Chainsaw Jim]

A regular 066/660 cylinder will bolt right on since it is technically an 066 after the case swap. The big bore kit will work.