HP 500 Clone
9.1/1
MSD
Gil Offshore
Decided to spring for the Inconel Valves in the Dart Pro 1 heads I am having assembled BEFORE I discovered the failing stem on #8.
OEM Retangular port Gen V (088) heads w/2 piece stainless valves.
I had a lean condition untill I upgraded fuel system.
What would this valve stem failure???????? Manufacturing defect? Lean condition? Reversion? All other valves look normal.