350 muffler mod

[brncreeper]

With all the talk about muffler mods on this site I just had to try it. I must say, my 350 needed it!
I use the crap out of it, mostly on oaks. It made a world of difference to do a muffler mod. Seems to have noticeably better power on the hard woods. Also, it gave it a meaner sound.






The new deflector cap just barely fits under the plastic cowel.

 

[brncreeper]

I opened the exhaust to about twice the diameter of the stock opening with a die grinder (original cap had to be ground off). I then had to fabricated a new deflector cap.

Still make use of the screen/spark arrestor. Screen can still be removed and cleaned if needed.

 

[brncreeper]

Local welding shop TIG welded the cap on the muffler for 6 bucks. Only 2 sides were TIG welded.

 

[brncreeper]

As a precaution, I laid some strips of 3M fiber glass tape to keep the plastic from melting. Seems to help!

 

[jokers]

Nice work brncreeper, the new deflector looks like it came with the saw. BTW, what did you do to your muffler to get it so dented? Russ

 

[jokers]

Is your name Tom by any chance? That`s not a joke, just remember a guy named Tom who also had a 350 mentioned pounding his muffler like that. Russ

 

[brncreeper]

Jokers,
Thanks. I’m not Tom my names Grant.

I used a DIN rail that can be purchased at electrical outlets such as Van Meter. Unfortunately I don’t have a picture of one right at the moment. But if you go to any Van Meter outlet and ask for a DIN rail, you’ll see where I got the design.

 

[brncreeper]

The dents on the front of the muffler were from abuse…burying the 18” bar in large oak trees.
I have since purchased a 3120 for that type of work. I still use the 350 the most however.

 

[YUKON 659]

Maybe you should have let the saw cut it's way through the oak instead of trying to pound it through.

Jeff

 

[brncreeper]

I think I was still learning how to sharpen a chain too.

 

[brncreeper]

No, it wasn’t on backwards.