Lots of conjecture within that thread...I've been in there. By people that never used the saw back in the day and just, well, lots of confabulation. I don't pretend to know everything about the saw, but I freely admit that. One forum member made what seemed like his life's work to document what piston and cylinder changes there were during its production.....with an attitude.
Although very similar, you can't include the 2101 when you're talking about 2100's absolutely......there were some differences. And when they start talking about "all" 2100's had this or that, they're usually off the mark on something. Some claim the direction arrrow in the piston top during one production run was supposed to point toward the intake, not the exhaust. I didn't tear those saws down when I was using them, so I can't make a call there one way or the other. I bought a dozen of them over the yrs loggin', although I don't pretend to remember changes (if any).
The 'thin ring' 2100's that are considered to be the Holy Grail of 2100's....we avoided them like the plague. The reality was you were lucky to make a season through with one. Lots of people have offered theories....like we were using oil mixes too rich and coke depostis were making the piston rings stick in their grooves. Dunno....but everyone I knew was running PowerPunch
@40:1 and that's not gonna stick your rings to the piston groove.
One other tidbit....when I was loggin' in CO toward the end, this guy opened a Husky shop down the road from where I was living. We went to replace my SEM's module and there was some confusion about CD or XP. He put in a call (everything was LD in those days and EXPENSIVE) to the west coast regional rep. The rep said the XP saws were designated (at that time) to saws sold in the PNW because they provided a hotter spark for wet conditions. I offered that story to the guy above I mentioned as being the 2100/2101 P&C expert. His retort was that saw reps were the most despicable people on earth and notrious liars. So....you can see how history can be bent, made up, or distorted to anyone's likiing. Why would a rep make up a story like that....to what end?
Now as far a USING the 2100 in large scale PNW timber, the bars we used and the usual modifications...I won't back down from any do rights or naysayers.
Kevin