Question
Got a question about 85cc Cylinder Kit- Vespa PK/ Smallframe 50cc?
Questions & Answers
We were wondering if you are able to suggest the best spark plug and carb jetting for this kit? We have the 16.16 carb.
Asked 5 years ago by Anonymous.
These use a NGK B-HS short reach spark plug.
Jetting wise will be trial and error when upgrading the cylinder kit and would also depend on other modifications fitted to the bike. If you are just re jetting it for the cylinder kit I would start with roughly 10% bigger than the current size fitted and work from there.