Kevin ,that small carb is an eye brow raiser for sure. I'm using HRI oil and had to really lean the carb out after completing the engine and mufflers mods from where you had the high side set at and the saw really screams on top end. Truely believe the 49 carb is more than capable of supply enough mixture after porting,will most likely be easier on fuel over the 136/167,IMO,think I got those carb series right

Got my eyes on this thread
