Hi I have a Vespa sprint vbb 2 port with a pinnacso 177cc kit, a sip road 3 exhaust and a spaco 24/24 E carb, my question is what jetting is required for this setup.
hi, that depends on the engine, air intake, and exhaust system. A 110 main jet can work well with a 24mm carburetor, but it also depends on whether you’re using an open air filter or a performance exhaust. Some setups run better with a 108 or 112 jet.
Check the spark plug color every few kilometers.