I got to see a unicorn 28mm Pinasco downdraft carb today. Malossi cylinder from the outside so I知 guessing its the 220cc kit with a rotary intake and a re-welded sito box pipe. A P200 metal air filter had been hogged out and installed. Surprisingly a stock 200 airbox cover is installed as well. Not the taller Stella/ Pinasco air boxes.
It was jetted like a 24mm carb 160, be3, 130. The new owner knows nothing about Vespas so I知 trying to jet it on the conservative side for reliability/ fun so I threw in the richest combo I have 120, BE4, 135. Still revs out cleanly.
I couldn稚 find anything out there on the English speaking internet boards as far as jetting info goes for the downdraft 28mm. Obviously I want to jet rich for this guy as Southern California temps will increase and he値l start pushing this more and more the more familiar he gets with it.
Anyone got any experience with these? Richest main jet I can buy from Scooterwest is a 155. Figured I壇 throw that in and work backwards if theres no info.