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KT19 II Exhaust Valve


MadMike

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Other than the amount of hours on this engine, any ideas on why an exhaust valve would break like this?

No additional damage that I can find, looks to be an extremely clean break.

 

EX Valve.jpg

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Two piece valve..................,weld broke,,,,,,,,,,,replace it,,,,,,,lap it in ,forget it !!!!!!!!!!!!!!!!!!

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Valve guide seems fine, valve keepers were still in place and the valve was freely moving.

I have a new exhaust valve and valve guide on order, once here, I'll have the guide installed, reamed, and the valve and valve seat ground to spec.

 

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