thompson1600 said:
Bumping this up, to see if anyone has more advice. Thanks
DOn't know whether this is advice, more info. I've got an 084 I built out of two saws with two different mufflers. Both look pretty much the same on the outside, other than on hole.
One muffler is the one you describe with the basket and two tubes.
The other has no basket, a spark arrestor screen across the top, and the exhaust exits in the same place.
I went with the two tube muffler ( I think the older of the two) because it looked like the outlet was bigger. Didn't measure it though.
Wondered the same as you, the holes don't look they add up to even half the area of the exhaust port on the cylinder.
Maybe I should make some timed cuts with both mufflers?
Not going to have time for a while though