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Gents, the piston in my M20 is marked 3.62, there are other marks unreadable. Anyone know the piston size on overbore ?
email (option): binnawan@iinet.net.au
Standard bore is 82mm (3.228") so a plus 40 thou would give you 3.62". Ron
email (option): ronpier@talk21.com
Cheers Ron