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<blockquote data-quote="NoahM" data-source="post: 224885" data-attributes="member: 5082">Hello, first post here.I'm currently working on a Suzuki PV &quot;monkey&quot; bike. 1992 year model, 50cc air cooled 2 stroke, road legal. Really fun lil bike. I've owned it for maybe 3 years, used to ride it quite a lot.Just this winter I decided to tear it down and fix it up because it was getting pretty worn out. Still worked great though!I've just recently gotten the engine back together with brand new crank, seals, bearings, clutch plates etc., the whole bottom end.Also started to reassemble and clean the rest of the bike.The cylinder I'm planning to use is a big bore 50mm (74cc) that's been properlyported by someone (the person I bought it from). Portjob looks great yadiyada cylinder is in good shape but the issue is it's got a small sized tear in it. According to the person I bought it from a piston pin clip loosened and it promptly seized the piston but only a small tear on the cylinder wall.I'll post pics later.But with just guessing, how could I fix this? Obviously I've thought of honing it, but the tear is a little deeper than just a surface scratch. Is it possible to hone/bore a cylinder maybe half a millimeter, with just a honing drill?Thanks in advance and sorry for the text wall haha.The cylinder is cast iron btw so no need for a nicasil replating</blockquote>

[QUOTE="NoahM, post: 224885, member: 5082"] Hello, first post here. I'm currently working on a Suzuki PV "monkey" bike. 1992 year model, 50cc air cooled 2 stroke, road legal. Really fun lil bike. I've owned it for maybe 3 years, used to ride it quite a lot. Just this winter I decided to tear it down and fix it up because it was getting pretty worn out. Still worked great though! I've just recently gotten the engine back together with brand new crank, seals, bearings, clutch plates etc., the whole bottom end. Also started to reassemble and clean the rest of the bike. The cylinder I'm planning to use is a big bore 50mm (74cc) that's been properly ported by someone (the person I bought it from). Portjob looks great yadiyada cylinder is in good shape but the issue is it's got a small sized tear in it. According to the person I bought it from a piston pin clip loosened and it promptly seized the piston but only a small tear on the cylinder wall. I'll post pics later. But with just guessing, how could I fix this? Obviously I've thought of honing it, but the tear is a little deeper than just a surface scratch. Is it possible to hone/bore a cylinder maybe half a millimeter, with just a honing drill? Thanks in advance and sorry for the text wall haha. The cylinder is cast iron btw so no need for a nicasil replating [/QUOTE]

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