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XR200 valve damage?

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I'm working on a 2001 XR200r that had the cam chain tenioner fail (as in broke in half). The cam chain did not come off the sprockets but it also had zero tension.

 How likey is it that the valves may have contacted the piston and bent?  

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if the chain didn't jump on the sprocket you are probably fine.

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I've had 6 of these bikes, all had broken cam chain tensioners. On 2 of the bikes the valves were good & on the other 4 each one had 1 bent valve. 

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Depends how hard and long you rode it after the breakage. I shut mine down as soon a s it got loud and no damage.

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