Porting a cylinder

In my previous post I showed you pictures of a ported cylinder. In this post I will explain more on how to port a cylinder. What are the basics, what formula's should be used and how do you decide what timings you should use.

Tuning and rebuilding a Piaggio engine

In this post I will show you a build of a Piaggio engine I did for one of my friends. He uses his scooter (Gilera Runner) for daily driving. Although he already had a respectable daily driver setup, he wanted more. He asked if I could take a “look”.