engine polishing
also mr dennis polishing the insides of the engine(intake ports,outside of sleeve,crankshaft ,connecting rod,and carburetor venturi(aluminum one),will that yield any increase in performance,and one last question i have 2 brand new picco engines the first side exhaust 12 and 15.with the blue engine heads,my question is there anything wrong with this engines,i heard the carburators sucked and the connecting rods and is it ok to replace the rotary carb with a slide one and the connecting rod as well if so wich one would you recommned based on your experience,sorr y for so many questions thanks in advance