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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cometic timing cover gasket and quill clearance
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<blockquote data-quote="Rob H" data-source="post: 92716" data-attributes="member: 1913"><p>Concerned about the oil seals, I have fitted new rubber seals and have a fitted a cometic gasket. There does not seem any resistance to the seals when fitting the timing cover. I bolted it down and left a week then removed. only two of the seals show the imprints of the nuts the other two no signs of contact. Without the gasket I can feel the resistance of the rubbers when locating the cover by hand. I am guessing that the fit to the seals is marginal at best. Questions I have are:</p><p></p><p>Does the seal have to be tight to withstand the oil pressure to the cams?</p><p>Any trick to check if the seal pressure or contact is adequate or not?</p><p>What about installing shims under the nuts to raise their heights a little to get a better seal?</p><p></p><p>Rob</p></blockquote><p></p>
[QUOTE="Rob H, post: 92716, member: 1913"] Concerned about the oil seals, I have fitted new rubber seals and have a fitted a cometic gasket. There does not seem any resistance to the seals when fitting the timing cover. I bolted it down and left a week then removed. only two of the seals show the imprints of the nuts the other two no signs of contact. Without the gasket I can feel the resistance of the rubbers when locating the cover by hand. I am guessing that the fit to the seals is marginal at best. Questions I have are: Does the seal have to be tight to withstand the oil pressure to the cams? Any trick to check if the seal pressure or contact is adequate or not? What about installing shims under the nuts to raise their heights a little to get a better seal? Rob [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cometic timing cover gasket and quill clearance
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