I have a garelli gran sport with a 70cc polini and delorto carb that reads PHBG 20... i dont have anything to measure mm ...
its currently running without an airfilter... i tried zip tieing some oiled panty hose to the carb but i dont have any jets that will allow it to start
so what air filter would be best? I will probably have to have to extend out to the side.. the whell is pretty close
I think foam will be best... any suggestions on specific filters?