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Originally Posted by Kurlon Winston, have you actually measured the bore and stroke on that motor?
(And for reference, the Lifan 'Monster' tag refers to a specific Lifan 120 motor, all others are not monsters despite similar specs or bottom ends.) |
Kurlon is dead right . The actual 120 monster Lifan has ports that are larger (wider) , smoother and cleaner finished inside and the casting around the guide is larger diameter than the later "R" type big valve heads .