Re: Piaggio - Bravo engine spec. Question

Marc Friedman /
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I'm pretty sure it's in the wiki under Vespa factory manual. In it is specs in three languages. At the very least the exact bore is stated. But it sounds like you are boring to a certain ring gap whereas it's my assumption that the ring gap is set after the correct piston diameter vs cylinder bore is established. Then the rings ends are filed to the correct gap. So perhaps I'm not reading your post correctly?

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