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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Blowing Out Blue Smoke after running slowly
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<blockquote data-quote="Matty" data-source="post: 27771" data-attributes="member: 1339"><p>Thanks Howard - have checked and the breather is "puffing" as required. There is no smoke from the breather however which might suggest that there is not "blowby" between piston and cylinder.</p><p></p><p>It still smokes, much the same with the cylinder oil feed blocked, so I have now restricted the feed to the inlet rocker by inserting a metering wire of 0.030" diameter (which does not seem to be a very tight fit) into the modified screw used for the special clamp I have to secure the rocker aluminium bush into the head tunnel.</p><p>The metering hole should be 0.032, but I think mine is a fraction bigger, so with any luck some oil - and probably enough in the short term for a test - should get through to the rocker.</p><p></p><p>Will have a drive around Sunday to check for smoke and will keep an eye on the inlet rocker assembly to make sure no harm is being done.</p><p></p><p>Matty</p></blockquote><p></p>
[QUOTE="Matty, post: 27771, member: 1339"] Thanks Howard - have checked and the breather is "puffing" as required. There is no smoke from the breather however which might suggest that there is not "blowby" between piston and cylinder. It still smokes, much the same with the cylinder oil feed blocked, so I have now restricted the feed to the inlet rocker by inserting a metering wire of 0.030" diameter (which does not seem to be a very tight fit) into the modified screw used for the special clamp I have to secure the rocker aluminium bush into the head tunnel. The metering hole should be 0.032, but I think mine is a fraction bigger, so with any luck some oil - and probably enough in the short term for a test - should get through to the rocker. Will have a drive around Sunday to check for smoke and will keep an eye on the inlet rocker assembly to make sure no harm is being done. Matty [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Blowing Out Blue Smoke after running slowly
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