Rich and ABC shouldn't be used in the same sentence when speaking of breaking in a model airplane engine. It is a known fact that an initial run of this nature can cause permanent damage to the engine's piston/sleeve fit.
EVERY ABC engine I have ever broke in was with fairly hot (almost full lean) initial runs and it just kept getting better and better.
EVERY ringed engine I have ever broken in was done very rich, then gradually leaned out, and they just kept getting better and better.
EVERY engine I have
EVER owned
NEVER had a problem with a rod...
at any time in its life!...except for these Tiger Shark engines.
I will be following the Tiger Shark .56A Ring directions 'to the letter' when the new rod for it comes in. Honestly, I hope it works just fine...I don't need anymore fishing weights!
