My valves are so sad they got the blues.

[SappySE107]

Never seen valves turn blue before. Bronze liners failed to be durable and were allowing excessive valve movement. Not seating the best and all that.

[bszopi]

Huh, that's interesting. Can't say I've seen that before!

[SappySE107]

Me either. I thought it was possibly the oxide coating but I can tell the valves weren't spinning so a few valves are only blue where the fuel wasn't hitting them. I don't think the valves were seating very well though they were sealing. Not good enough to transfer heat from the valve to the head. The guides wore so bad one valve cut the seal off the seat/seal combo. Super bad.