RE: YS 160 runs too hot in Genesis
It isn't to lean, there is a lot of smoke actually it's a bit on the rich side and the HS needle responds normal at WOT.
I put an opening in front of the pump with the hope of getting some more air on to the cylinder, ran the engine this evening without any change, RPM down(77-78) and the the engine shuts down as its gets to hot. With the cowl off it just runs fine 8000 RPM max and idles great.
Next I will try some 30% and if that doesn't work then I will cut some exit holes. I have looked at many pictures of the Genesis online and a lot of people have less exit holes and some have more or less inlet holes. What I don't know is the fuel and prop they use. I will update after next run.
Mark