Stihl ms 261 muffler differences

[sawmikaze]

I've seen guys debate if there is any type of restriction inside certain mufflers on the 261..there is.

I had a muffler from and OE and a version 2 side by side tonight and the OE muffler has a type of tube/baffle or whatever you wanna call it at the top of the muffler and it's also heavier than the version 2 muffler.

I'll try to take a picture tomorrow morning.

 

[Deets066]

Gee thanks Ryan, I can sleep much better now

 

[sawmikaze]

Gee thanks Ryan, I can sleep much better now

Get *f-worded.

 

[Deets066]

Get *f-worded.

Did I win somthin for the fastest derail of one of your threads?

 

[Dub11]

Outside dimension the same?

 

[sawmikaze]

Outside dimension the same?

Everything else is the same.

I've seen dudes get crazy insisting there was no type of restriction in 261 mufflers..they wrong.

That's the only reason I made this thread.

 

[sawmikaze]

Did I win somthin for the fastest derail of one of your threads?

Bend over for your prize deeter.

 

[Deets066]

Bend over for your prize deeter peter.

 

[Deets066]

Is there any numbes to differentiate between the two mufflers?

 

[AlfA01]

Get *f-worded.

Best Answer material right there...

Any pics of the two mufflers side-by-side?

 

[BonScott46]

I know they call the muffler on the Version 2 a 'sport' muffler over here but that is about all I can contribute.

 

[drf256]

Think we are talking apples and oranges Ryan.

No restriction from someone who mods the can, like me, means the exhaust port opening empties into an open area that can be short circuited/redirected. On an MS361, it empties into a giant restrictive baffle. On a 261. It empties into an open area and the restriction is up on the roof of the PTO side before the exit for the gasses. So there is a “baffle” there, but no baffle where the exhaust gasses enter the muffler.

I put a stainless @Red97 deflector on the Fly side and I cut a piece of sheet metal that mirrors the shape of the factory screen and insert it where the screen goes. That blocks the natural outlet so the Ex gasses don’t stain the case.

 

[sawmikaze]

Think we are talking apples and oranges Ryan.

No restriction from someone who mods the can, like me, means the exhaust port opening empties into an open area that can be short circuited/redirected. On an MS361, it empties into a giant restrictive baffle. On a 261. It empties into an open area and the restriction is up on the roof of the PTO side before the exit for the gasses. So there is a “baffle” there, but no baffle where the exhaust gasses enter the muffler.

I put a stainless @Red97 deflector on the Fly side and I cut a piece of sheet metal that mirrors the shape of the factory screen and insert it where the screen goes. That blocks the natural outlet so the Ex gasses don’t stain the case.

A 361 has a pathetic excuse for a muffler.

I put these mufflers on the same saw and the muffler from the version 2 was alot snappier and it ran better.

Guys have said there was no exhaust restriction in the sense that it was just an open can with a straight shot to the exhaust port..not true on this older muffler. It has to travel through that tube or whatever you wanna call it before it exits the muffler.

 

[sawmikaze]

I know they call the muffler on the Version 2 a 'sport' muffler over here but that is about all I can contribute.

That's interesting.

 

[Redfin]

Its tomorrow. Where da pics?

 

[drf256]

A 361 has a pathetic excuse for a muffler.

I put these mufflers on the same saw and the muffler from the version 2 was alot snappier and it ran better.

Guys have said there was no exhaust restriction in the sense that it was just an open can with a straight shot to the exhaust port..not true on this older muffler. It has to travel through that tube or whatever you wanna call it before it exits the muffler.

Yup

Tube is up on the PTO roof back by the Saw (rear) side. If one cutts gills or adds a vent on the front flywheel area, it short circuits the gasses directly out of the muff.

 

[Duane(Pa)]

He said Muff!

 

[sawmikaze]

Its tomorrow. Where da pics?

Come hold da frash right for me..its too dark and hard to take a picture.

I'll get one soon.

 

[CR888]

Interesting, I suppose there was a h.p bump on the V2 wasn't there? Given Randy said when they came out port map was the same, maybe the added h.p come from the muff.

 

[Redfin]

Come hold da frash right for me..its too dark and hard to take a picture.

I'll get one soon.

My frash holder is occupied. Id betcha Fabz could help ya get a pic.