Chainsaw Repair

I've heard the same thing, but I've also heard the 064 has better port timing and runs as well as a stock 066/660. If that is true, you're gaining nothing more than an additional 6cc. I've also heard you can drill out the holes on a 056Mag II and mount it to your 064/066 and make it a 99cc screamer. Ebay has a piston / cylinder for$89 as wee speak. My 064 is fresh, so I'll be passing on the 056 mod.

The only thing I'm seeing on eBay is this:  >>>> LINK <<<<    and that is a pretty big difference in price.

But maybe I'm using the wrong 'search option' there?


I was looking at the specs @Bill's page, and I am having trouble with the math.  The 056M{56x38mm} and has a 93.4cc and the 064{52x40mm} and has a 85.0cc chamber size....how does it get to 99-ish cc?{am I supposed to use the 56mm bore and work with the 40mm stroke??}
And can you describe what a 'screamer' is(remember, I'm new and I don't know the 'lingo'), I have a basic knowledge of rpm's from spec sheets(but no tachometer to actually compare what I'm reading to what I 'hear' while running a saw). 
For that matter, I can only hope my newer saws are running to their 'top performance levels', I mean I know if they are cutting well-but could they do better without 'dying'!?!?!



My 064 is old and tired, I'd like to do something with it, it's not leaking fluids and I have got my initial investment out of it(three fold)....  After all, I have a J'red 2094 that is still stock-strong if I need to mill something BIG!


I can 'find' either top-end...
But which will be 'best'?  Last the longest for the cha-ching?  And finally, provide the most 'return' if I decide to part with the saw later?






Scott (virtual can-o-worms opened...sorry) B