Awesome! And thank you. I'll take a close look at it.I think,,, it’s a hybrid, just mod the cylinder to fit and 440 shroud a bit of timing advance then boom. Your saw roars but looks like a 440.
It’s the smaller case compression that gives it the ooomph. There are a few threads around.
I will edit this when I find mattG's thread. Just cos and for no other reason, he did a fine build with help from other fine guys from here
Edit: here ya go
http://opeforum.com/threads/044-project.7951/
Sounds great. Have a question about the flywheels are you running the farmertec one or did you change to the OEM Stihl??For these 440 kit saws (and Big Bores, etc), it is best to replace that upper left dampener with OEM, makes a big difference in reducing felt vibrations.
I also recently went back into my 440 BB #1 and improved the porting and advanced the timing more. (see pics/details) in "what's on your bench" thread.
Timing is now .030 off the key (was .020). Saw sounds good, but hopefully it will stop raining soon and I will put it in some wood!