Dave,

I did do a search before asking and all I could come up with was numbers for most of the engines that are no longer made like the 91AC, 120FZ, etc...

I do understand that nitro and local conditions can mess with the numbers as well as any number can be stated, but I do trust YS as I have found that through reading this forum and asking my own questions that your support and YS's in general is fantastic.

I was just putting figures together for comparison as I want to start using YS engines exclusively, replacing my other 4-strokes, most of my current planes and in my new ones and needed a baseline to start at.

Didn't mean to beat an old horse. Sorry for the frustration. []