Alex,
Standard bore size is 3.50 inches
pistons were available in .003", .010", .020", .030" and .040" oversizes
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Richard
1943 Bedford QLD lorry - 1941 BSA WM20 m/cycle - 1943 Daimler Scout Car Mk2
Member of MVT, IMPS, MVG of NSW, KVE and AMVCS
KVE President & KVE News Editor
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