Vespa Polini 210, BGM 60mm, Dellorto SI26 - tuning test engine - Pt. 6th
Our test engine is running, we let it warm up properly. The jetting seems to be right with idle jet 48/160, air correcter jet of 160, atomizer BE3 and main of 140. So now we will see how powerful this engine is. First of all the gear ratio needs to be measured. We measure this […]