Re: Over-Boring a Minarelli to 43mm

Robert Rosselit /

Well, the piston is for a Minarelli. The Carabela piston is nearly identical to a Minarelli, the only difference being that the crown of the Carabela piston has additional doming in the center of the piston to increase compression. I would be likely going from Carabela's 9:1 to the Minarelli 8:1 by doing this. I'm not looking to have a real blaster, just a slightly fast and mostly reliable bike. Maybe run in the upper 30s lower 40s.

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