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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Mongrel
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<blockquote data-quote="Cyborg" data-source="post: 102910" data-attributes="member: 3426"><p>In keeping with my habit of turning newly assembled engines over by hand, I discovered that the intake adjuster nut was just coming in contact with the ET24 inspection cap. The cap is new from Coventry and I believe they are the same from VOC spares. The new caps are machined differently and have less clearance than the originals. This probably doesn't happen very often, but thought I would mention it. I chucked the cap in the lathe and removed some material with a boring bar and cleaned out a bit more with a Dremel. Also took a few thousandths off the top of the adjuster and rummaged around and found a inspection cap gasket that was .040" thinner. The first photo shows the old style cap ..... the area in question is concave and the new cap is just cut on an angle (beveled) between the black and red mark. Mk2 cams and decent vale seats. #fettle</p><p>Is this unusual or am I missing something?</p></blockquote><p></p>
[QUOTE="Cyborg, post: 102910, member: 3426"] In keeping with my habit of turning newly assembled engines over by hand, I discovered that the intake adjuster nut was just coming in contact with the ET24 inspection cap. The cap is new from Coventry and I believe they are the same from VOC spares. The new caps are machined differently and have less clearance than the originals. This probably doesn't happen very often, but thought I would mention it. I chucked the cap in the lathe and removed some material with a boring bar and cleaned out a bit more with a Dremel. Also took a few thousandths off the top of the adjuster and rummaged around and found a inspection cap gasket that was .040" thinner. The first photo shows the old style cap ..... the area in question is concave and the new cap is just cut on an angle (beveled) between the black and red mark. Mk2 cams and decent vale seats. #fettle Is this unusual or am I missing something? [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Mongrel
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