Most has been answered, but I’ll give you my $.02
034 is 46mm and has that Uvula in the intake port to support the rings.
The 034 Super went to 48mm and are almost all KS jugs. They look similar to the 46mm externally to a degree, short second fin over the exhaust port like the 46mm jug. Inside, they are a work of art. The exhaust port has the same shaped roof as the 10mm 044, very vert flat. Nice tight uppers and a perfect intake port. Squish comes in right around 18 without a base gasket. I do have a rare interim NOS 034S jug here made by Mahle of
@dall here.
036 jugs are all Mahle or Gillardoni. I’ve never seen a KS 036 jug. They have extended 2nd fins and a teardrop shaped intake port. The uppers are nowhere as nice as the 034S jugs are. The Gillardoni jugs are a bright silver color that look AM and have a machined slot on top of the jugs. The G jugs also have the biggest transfer tunnels.
The MS360 is where the airfilter, starter and covers changed. Same carb with a compensations metering cover and with limiters. Also the decomp valve.
The Tilly 43B carb is supposed to be the best, it came on the early 034S saws. I’ve noticed no real performance difference between the Tilly and the Zama.
The top covers are different. The 034 and 034S have a front air dam that need to to be trimmed if the 036 jug is to be used. It’s that second fin that causes the fitment issues.
There are 3 different mufflers I know of. The short body mufflers need a spacer sometimes. I
think it’s when one uses an 034 standard muffler on an 034S or 036 jug, but I am not sure. I’ve never had the issue myself. The 034 muffler has a standard baffle inside, the 036 has none, and the 034S has an elongated baffle that’s like a tube and exits on both sides.
As for porting, I prefer the Mahle 036 jug.
That’s all I have.
@Mastermind , Yes the 036 P&C will fit your buddy’s saw. You’ll need to trim the top cover the way one does when doing an 044/046 hybrid. The muffler may or may not fit, but the exhaust spacer will allow it to work. It’s the same Spacer and PN as the 044/064. They are one in the same. It’s odd how some saws need them and some don’t.
