Hello all,
This may be a stupid question to some but I know that people have talked about burning valves, etc. when running even slightly lean AFR. Is this only a problem under full throttle (high loads) because then the engine is making more or less as much heat as it can and it has trouble getting rid of some of that heat fast enough? I really should know this but am somewhat ashamed to admit that I do not know it for sure. The idea with lean AFRs is to keep dynamic compression high (and therefore efficiency) at part throttle, light loads, correct? So when the load starts to get higher the AFR would go closer to stoich, much like a diesel. I do hope that I am right in these respects, or I am going to feel really dumb
Thanks,
Howard