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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Top End Speed
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<blockquote data-quote="Bill Thomas" data-source="post: 50537" data-attributes="member: 485"><p>Hello Kevin, I have only run Mk1 cams in my twin in 1965 with a sidecar !! and that was not for long, They wore out, I was putting bigger main jets in the carbs trying to make it go faster, Then I checked the valve clearance to find the valves were just jigging about ! The valves were only opening about 1/8th of an inch, It went very well when i think about it. The thing with Mk2 is the tickover won't be as slow, I have heard some Comets very slow running. As with any tuning it has to be all done to get the best, The biggest thing for me is the exhaust, It is no good getting more petrol in if the gasses can't get out. You have to make your mind up if you want top speed or miles per gallon. Good luck, Bill.</p></blockquote><p></p>
[QUOTE="Bill Thomas, post: 50537, member: 485"] Hello Kevin, I have only run Mk1 cams in my twin in 1965 with a sidecar !! and that was not for long, They wore out, I was putting bigger main jets in the carbs trying to make it go faster, Then I checked the valve clearance to find the valves were just jigging about ! The valves were only opening about 1/8th of an inch, It went very well when i think about it. The thing with Mk2 is the tickover won't be as slow, I have heard some Comets very slow running. As with any tuning it has to be all done to get the best, The biggest thing for me is the exhaust, It is no good getting more petrol in if the gasses can't get out. You have to make your mind up if you want top speed or miles per gallon. Good luck, Bill. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Top End Speed
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