Thanks for all the replies . I really don't need any help building engines as I have been building all kinds from motorcycles with 4 valve per cylinder 15,000 rpm engines , countless HP 2 stroke motorcycles and High Performance outboards and MX engines and hundreds of RC engines , but I do appreciate the feedback . The post was directed at the manner in which engines are represented as in "good " condition . In the RC boat racing world when you rep an engine as good you get a photo like this . posted . granted , marine engines are much more expensive and operate at much higher RPM than most aircraft engines except pylon racers . Rep the engine truthfully is all I ask and is all anyone can expect .
Notice ... NO RUST or BS inside the engine , this is the way it should be .