Rick, ok. I'll admit I know little about the internal combustion engine. I do know I like them in my airplanes and automobiles. So I did a little looking on the web and now I have a few more questions if you don't mind to better understand my brison.

So from my reading, a piston ported engine is the simplest design 2 stroke? Can it have a reed valve or does it use a rotary valve? Or other valve type? I was assuming the zenoah was piston ported as it sounds alot like the Brison. Are their advantages between reed porting and piston porting?

Thanks for your time.<br type="_moz" />