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WR 400, noisey top end. NORMAL????

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are you sure its just not chain slap?

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mine does the same thing and i was wondering if there is any way to quiet this? Thanks

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If the timing chain hasn't been replaced in a while, they get noisy. Then the chain slips a gear and you get bent valves. That happened to my bike 3 or 4 years ago.

I replace them as part of annual maintenance any more. My '99 is on it's 4th timing chain. My bike has around 25-30k miles on it. Matter of fact, I just replaced mine a few months ago and it did get a bit quieter.

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if you have a bash plate or metal skid plates it bounces the sound upward also

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