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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
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<blockquote data-quote="davidd" data-source="post: 176136" data-attributes="member: 1177"><p>Broken rings usually stay in place. Over time the bits of ring widen the ring groove, but they still remain trapped in the piston.</p><p></p><p>[ATTACH=full]60851[/ATTACH]</p><p>I suppose it could be a small shard that made it by the piston. The best thing to do is a leak-down test, but you probably don't own a tester. A compression test should tell. When I did a leak-down test on the above cylinder it showed 60% of the air passing by the rings.</p><p></p><p>Fortunately, I had a Nicasil aluminum cylinder liner in the muff and it is still running today 13 years later.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 176136, member: 1177"] Broken rings usually stay in place. Over time the bits of ring widen the ring groove, but they still remain trapped in the piston. [ATTACH type="full"]60851[/ATTACH] I suppose it could be a small shard that made it by the piston. The best thing to do is a leak-down test, but you probably don't own a tester. A compression test should tell. When I did a leak-down test on the above cylinder it showed 60% of the air passing by the rings. Fortunately, I had a Nicasil aluminum cylinder liner in the muff and it is still running today 13 years later. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Foreign Object
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