Yeah I'm a fan of the 261 and the 362. Rob I remember you showing me a nice revolver at that gtg, wasn't all that familiar with them at the time, that has changed.
If you google Stihl 066 60 inch bar you find Brads dad at the previous gtg and its in his pocket while he is running my 066. Lol
I'm a little skeptical of the 207deg strato duration, although it's possible I guess. It's hard to measure that as the port isn't open until the entire path from strato intake, across the piston and into the transfers is open. Often the piston cavity is stepped so the opening from the piston to the transfers may not happen at the same angle as the opening from the piston to the strato port.Here's the port timing, stock with gasket.
Exhaust - 98
Transfers - 117/120
Intake - 81
I have never altered strato timing.
I have, on a couple of GZ400/4000's and Poulan, and it has worked well. You just have to be careful about finding the part that is really determining the opening angle - having removable transfer covers certainly helps to see what is happening. On the GZ400/4000 moving this edge is what changes the strato timing:
And if you'll note......it had already done a full length noodling of that log......Never noticed that then or in pics afterwords. But do remember that day.
Heck..... Neither did I till Brad and I were looking at picks whenever his dad passed.
Presumably to minimise overall weight, but still seal the exhaust port upon the inlet part of the cycle?
