reground exhaust valves thin? or are we being overly cautious

[gareth12]

Hey, attached is a pic of one of my oem exhast valves, the engine shop who doesn't do much duramax stuff was concerned it was a bit thin. Any thoughts? The truck will be 80 over compount setup so it will see some heat/boost... Thanks!!

 

[1FastBrick]

The important thing is where it contact's the seat.

 

[PureHybrid]

That valve is scrap. Not a good edge at the transition and there's barely any margin left