are u talking about the picco r/c speed engine if u are i have never been able to find anything on it anywhere th eonly thing i know about it is is that its almost 5 years old (so i was told by a few people) and it has one of the worst carbs ever. any way before i got my new engine i tuned my picco to 2-3/4 on the high speed and 2 turns on low speed.