RE: 4-STROKE engine is equivelent to what 2-stroke
Jon, I have an almost broken in Saito .82a, it turns a 14x6 APC at 9,350 richened down from 9,520 and I suspect has a couple of hundred more to be gained. That is on WildCat 10% Premium with 16% 80/20 lube and a H9 SuperPlug.