Porting your 2-Stroke motorized bicycle engine

Porting your 2-Stroke engine can help facilitate a smoother running engine. This tutorial will show you how to successfully carry out some porting procedures to increase the reliability of your 49/66/80cc motorized bicycle engine and/or 2 stroke engine. Please refer to our tutorial at for more information about this process as well as where to purchase the tools required for this process. The reading from Gordon Jennings’s 2 Stroke Tuner’s Manual is also available there. F