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Canadian Daves JustKDX
Ignition Timing Question (long)
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[QUOTE="G. Gearloose, post: 112152, member: 19284"] [b]Mo data…[/b] Short story: I set the timing back to ‘straight up’. I thought I heard a knock at about 2000rpm on my first real ride with a decent load on it, and at temp. Longer story: I tried to get some timing numbers but this is where its gets ambiguous. To get an idea of rpm, my DVM has a ‘frequency’ function, so I wrapped the leads around the plug wire 4 times to make an inductive pickup. :silly: One would think that if I aligned the factory score on the flywheel with the pointer on the case that the piston would be at tdc? Apparently not... Finding tdc really needs a dial indicator, but after some probing in the spark plug hole with a Teflon dowel and midpointing similar deflection in each direction, I concluded that when the factory marks on the case and flywheel align the piston is really at about 20 degrees btdc. Idling, the timing light indicated the factory marks aligned right on at 1200rpm, (about 20 degrees btdc) and gradually retarded with rpm to an observed 8 btdc at 6000rpm using a light with dial-in retard. Keeping dial-in to 0, got same numbers by indexing some marks in 5 degree increments on the case after calculating flywheel diameter with a caliper. But this data conflicts with my manual, that states the spec is 19 BTDC at 6000rpm.Thats my @ Idle advance. :confused: I know my method to find TDC method was kludgey, but I suspect I was not off by 11 degrees. All I could conclude from the exercise was the CDI did not have apparent abnormalities at the transition where the flat spot subsides, and that to measure or set the timing with real accuracy, a dial indicator [I]and[/I] a timing light with built-in retard is necessary. (and better specs from Kawasaki.) Guess I can swap the V-force or pipe with stock to see if they are responsible; good thing its ridable as it sits. Thanks to you all for getting me this far, I just wanted to share the info. Knowing what the problem is ‘not’ is almost as good as knowing what it is. Maybe is time for carb mod ;) [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Ignition Timing Question (long)
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