Gnarly I have desktopdyno but its for XP and I have windows 8
![Sad :(](https://board.marlincrawler.com/Smileys/marlin/sad.gif)
when I ran the numbers and spend some time carefully getting REAL cc amounts of combustion chamber by placing the head upside down, filling with antifreeze then sitting a piston on a old gasket for a 20 r onto the head so it squished. then sucked up the remainder with a syringe. I think I was at 82cc
.060 over size bore 90mm stroke, (custom cut done when I had money)