I swapped a stock 89cc Minarelli two-stroke engine into my scooter. This vid is using a stock 49cc carb with stock jetting, stock airbox, stock 49cc exhaust, 6g rollers like the 90cc engines typically come with stock, and a 90cc style contra spring (stock spring, stiffer than a stock 49cc spring). More vids to come in the future with different pipes, carbs, CVT tuning, etc...
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