Help me diagnose a ticking noise? Video attached.
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I wouldn't ride it around while it's making that sound. I'd be afraid of catastrophic damage in the event that whatever is loose finally lets go. To me, it sounds like one of the chains. Maybe even the oil filter chain.Cheburashka wrote:Well I guess the big question for me right now is, would you ride on it in this condition? I've been riding it around today and it seems OK, but I wonder if I'm doing more damage.
1965 CA77Dream
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I think maybe this has something to do with it.
Got it apart. Good tight cam chain, everything's clean, tight sprocket on cam, and some pretty major scuffing on one piston. The other is fine.
I'll have the bores measured, but the cylinder bore is scratched and probably will need to be redone.
Nice to know what was causing the trouble. Right where I was hearing the noise too!!
I'll have the bores measured, but the cylinder bore is scratched and probably will need to be redone.
Nice to know what was causing the trouble. Right where I was hearing the noise too!!
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Re: I think maybe this has something to do with it.
Really remedial question but what the heck... here goes. What causes a piston to become scuffed like that? Did the piston overheat and distort? Please educate me.Cheburashka wrote:Got it apart. Good tight cam chain, everything's clean, tight sprocket on cam, and some pretty major scuffing on one piston. The other is fine.
I'll have the bores measured, but the cylinder bore is scratched and probably will need to be redone.
Nice to know what was causing the trouble. Right where I was hearing the noise too!!
1965 CA77Dream
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I've read on other sites that it's a lack of lubrication caused by fuel starvation, running lean and overheating. They were talking about dual-carb bikes and claiming that this kind of thing happens when a rider is moving at highway speeds and has to switch over to reserve and takes to long to get to the petcock. Apparently, it's always the carb with the shortest fuel line run which ends up going lean.
It sounds mildly plausible, although I'm not sure how much lubrication you get out of regular gasoline. Maybe on the "squish" stroke, but nowhere else.
I think in the end, the only thing that could cause this would be overheating.
It sounds mildly plausible, although I'm not sure how much lubrication you get out of regular gasoline. Maybe on the "squish" stroke, but nowhere else.
I think in the end, the only thing that could cause this would be overheating.