ARL New valve failed just below collet, anybody else seen this before?

andymc

Active Member
Mar 20, 2017
13
2
hi all, I’ve redone loads of engines over the years, bikes, cars and vans but have never seen a new valve fail like this, it is snapped right below the collet and the then proceeded to drop into the chamber and take the piston out. Just wondered if anybody else has ever seen this. Opinions appreciated.
 

andymc

Active Member
Mar 20, 2017
13
2
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