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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
TDC Timing Valve
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<blockquote data-quote="bmetcalf" data-source="post: 9349" data-attributes="member: 792"><p>Good points. The "conventional wisdom" I mentioned was what I applied when I found that one cam was either 1/3 tooth advanced or 2/3 retarded, then chose the former. I would imagine that that difference between cylinders would also be hard to see on a set of dyno sheets.</p><p></p><p>Also, I forgot to say that I was advised to measure at .050" (1.25mm) lift to be well clear of the quieting ramps of the modernized MK3 cams.</p><p></p><p>What I use when installing my cams is to align the slots per the illustration in Richardson, with the rear piston at TDC, after confirming it with the dial gauge and timing disc when I bought the cams 25 years ago.</p></blockquote><p></p>
[QUOTE="bmetcalf, post: 9349, member: 792"] Good points. The "conventional wisdom" I mentioned was what I applied when I found that one cam was either 1/3 tooth advanced or 2/3 retarded, then chose the former. I would imagine that that difference between cylinders would also be hard to see on a set of dyno sheets. Also, I forgot to say that I was advised to measure at .050" (1.25mm) lift to be well clear of the quieting ramps of the modernized MK3 cams. What I use when installing my cams is to align the slots per the illustration in Richardson, with the rear piston at TDC, after confirming it with the dial gauge and timing disc when I bought the cams 25 years ago. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
TDC Timing Valve
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