Vespa Polini 210, bgm PRO 60mm, Dellorto SI26 - Tuning test engine - Part 2
We also take a closer look at the Polini intake trumpet and the Dellorto SI 26. Why do you even need this funnel? In the end, it simply helps the carburetor to suck in more air and to ensure a better filling with fresh gases. More ignitable fresh gases in the cylinder ensure more available power. A larger volume of air must of course [...]