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Vincent Comet Timing
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<blockquote data-quote="Matty" data-source="post: 5989" data-attributes="member: 1339"><p>Have tried out the Comet and it is a little improved in performance with the crank moved 15 degrees and seems to rev more easily with a bit more torque out of corners.</p><p> </p><p>The main change seems to be that the engine seems smoother at higher revs with less vibration and harshness - I do not really understand this because the dynamic balance has not been changed !! Perhaps it is some complicated effect of the combustion process or gas flow. However the change is not really very great and air temperature, humidity etc. sometimes seem to produce simular effects.</p><p> </p><p>Hope this little investigation may help others with their cam timing knowing that the diagram on page 120 is NOT at TDC but 15 degrees away from it.</p><p> </p><p>Matty</p></blockquote><p></p>
[QUOTE="Matty, post: 5989, member: 1339"] Have tried out the Comet and it is a little improved in performance with the crank moved 15 degrees and seems to rev more easily with a bit more torque out of corners. The main change seems to be that the engine seems smoother at higher revs with less vibration and harshness - I do not really understand this because the dynamic balance has not been changed !! Perhaps it is some complicated effect of the combustion process or gas flow. However the change is not really very great and air temperature, humidity etc. sometimes seem to produce simular effects. Hope this little investigation may help others with their cam timing knowing that the diagram on page 120 is NOT at TDC but 15 degrees away from it. Matty [/QUOTE]
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Vincent Comet Timing
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