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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Liner/Muff interference fit
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<blockquote data-quote="nkt267" data-source="post: 45372" data-attributes="member: 245"><p>I have heard of muffs cracking after new liners have been fitted. The article in WhitakerPedia was by Maughans,so I did not dismiss it out of hand..But I bored the muff to 6 thou as per standard anyway.</p><p>I have dismantled the last muff and liner assy that was on my Comet and found that although the parts where brand new when assembled,there has been poor contact between liner and muff.</p><p>This time I bought an oversize liner and faced the top and bottom parallel and then bored the muff square to the base face.It all went together well and I left it to cool in my hydraulic press so that there was no chance of the liner creeping up when it cooled.</p><p>Hopefully I will have the Comet back on the road in about a week after the liner has been bored for the new piston..John</p></blockquote><p></p>
[QUOTE="nkt267, post: 45372, member: 245"] I have heard of muffs cracking after new liners have been fitted. The article in WhitakerPedia was by Maughans,so I did not dismiss it out of hand..But I bored the muff to 6 thou as per standard anyway. I have dismantled the last muff and liner assy that was on my Comet and found that although the parts where brand new when assembled,there has been poor contact between liner and muff. This time I bought an oversize liner and faced the top and bottom parallel and then bored the muff square to the base face.It all went together well and I left it to cool in my hydraulic press so that there was no chance of the liner creeping up when it cooled. Hopefully I will have the Comet back on the road in about a week after the liner has been bored for the new piston..John [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Liner/Muff interference fit
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