I built the owner of this saw a 7900 last week that runs pretty good so we're trying to beat it. This is the first time the 064 has ran,it's tuned to 13.5 so it's fair to the limited dolmar.
Also ran it with my 066,not the same bar and chain but I filed both right before I ran them.
My 066 is a beast and the 064 ain't far behind with both at 14k the 064 will go way faster.
All of them sound great. However, being rev limited to 13,500 and tuning to 13,500 are two entirely different things. In theory, the 7900 could actually be tuned to 15,000 were the rev limiter not stopping it.
The 066 has a little better chain and a 9pin
064 has a 8pin and both are at 14k
In certain situations the 064 will probably be faster but I can run more chain or gear on the 066 and beat it.
Still pretty Kool for 85cc against the strongest 066 I've owned,Shaun Carr ported it. I've built a few stronger than it but not by much.
It's a insanely stout saw so for the 064 to be close is a big deal to me.
I build 064's everyday, them and a 066 is 99% of my work and I think I have built one 064 stronger. Maybe