I had a lean condition a few times, warped the ferrea 5000 exhaust valves. 10.1comp 8.888 dynamic, quench head motor.
I have warped the 5000 exh valves twice now. Hard seats on both exh/int fwiw.
Yea, that’s just the wrong valve for that application. The 5000 isn’t really intended to be in that environment. Get some Super Alloy styled, and I bet problem solved.
