I'm about to switch to a 65cc 43 mm cylinder kit, but i don't know what to do for the carb and exhaust! can I keep the same crankcase, connecting rod, crankshaft, etc? Do I have to beef up everthing? the spark plug?!
I'm about to switch to a 65cc 43 mm cylinder kit, but i don't know what to do for the carb and exhaust! can I keep the same crankcase, connecting rod, crankshaft, etc? Do I have to beef up everthing? the spark plug?!
What moped do you have and what kit are you putting on it?
Assuming that this is for the Vespa Si in your profile...
You need to find out if your crank shaft is a 10mm or 12mm. On virtually any other Vespa moped I would say you have a 12mm but with a Si, you might have a 10mm. Ask someone on here with a Si if they know what size their crankshaft is. If you bough a 12mm wrist pin kit and you have a 10mm crank shaft then yes, you will need a new crank shaft. Otherwise everything Vespa is plug and play. some exhausts get in the way of the kick stand and/or pedals.
just throw the kit on and up jet and get a pipe and blast
1982 vespa SI
49.28cc (50cc) SI1m engine
bore 38.2mm
43mm stroke
dell-orto 12/12 carb
i got this from the manual, and my engine is the stock engine.
how do i measure the crankshaft? does anyone know the exact tool to remove this crankshaft? or actually, the exact steps to overhaul the engine?
wil a 70cc actaully fit in the same engine space as the 50cc?
please define "up jet", and, assuming by pipe you mean exhaust pipe, what is "blast"
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