Homemade muffler mods lets see them

[scottr]

Here’s the inside of a MS211 muffler if anyone’s curious. Thinking about different ways to mod it.
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Hello ballisticdoughnut , I don't know the diameter of that hole but I'd bet your 35cc 2.15 cubic inch saw would run great with that muffler if that hole was about 0.21 square inch open . Might need to also open the outlet area under the hood .
Scott

 

[ballisticdoughnut]

Hello ballisticdoughnut , I don't know the diameter of that hole but I'd bet your 35cc 2.15 cubic inch saw would run great with that muffler if that hole was about 0.21 square inch open . Might need to also open the outlet area under the hood .
Scott

After looking at this muffler I think it would be best to add another outlet. It’s impossible to enlarge the existing outlet without making an access hole, and even then the outlet is already as big as it can get. Stihl didn’t leave any room for improvement there.

 

[scottr]

I'm curious , what is the diameter of the hole at the back right in your picture ?

 

[ballisticdoughnut]

I'm curious , what is the diameter of the hole at the back right in your picture ?

Wanna say 5/16” or 3/8” something like that. I’ll get an exact measurement at work on Monday.

 

[scottr]

Wanna say 5/16” or 3/8” something like that. I’ll get an exact measurement at work on Monday.

9/16" diameter is much closer to 0.21 square inch .
Scott

 

[ballisticdoughnut]

Here’s a husky 125B handheld blower muffler I opened up. Made a big difference in performance, these things are seriously choked up from the factory.

 

[stihltech]

Wish I had the picture. Amish muffler mod on a MS661.
Appeared to be two pickaxe holes in exhaust cover. Pretty loud. They all blow them up sooner or later anyway.

 

[fastwood]

362 got some love today

 

[spuldup]

F380W - Removed the inner baffle and replaced the 2 small louvers with 1/2" EMT. High jet needed about 1/4 turn out.

 

[Squareground3691]

Some braze and HT paint done , 266xp

 

[Orange Ripper]

Not pretty, and by no means am I a welder lol, but here’s my little mod on my 55, seems to work okay, possibly might try smaller pipe stuffed inside as an “optimizer” cause currently could be a bit big for the saw honestly, but it was all I had laying around
Also don’t mind the rivets they’re filling holes that were previously drilled there by someone and needed a quick fix

 

[spuldup]

@Orange Ripper Nah it matches the rest of the saw well! I'd just fill the pecker holes, do a bit more grinding, and paint it to prevent rust.

 

[spuldup]

Some braze and HT paint done , 266xp

Mill envy ensues... Nice work!

 

[Orange Ripper]

@Orange Ripper Nah it matches the rest of the saw well! I'd just fill the pecker holes, do a bit more grinding, and paint it to prevent rust.

You’re not wrong lol, perfect lookin for a 33yo saw! Been meaning to get around to all that, but you know how that goes, put it on to “just try it out first” right and it since hasn’t come off for completion yet

 

[Squareground3691]

Mods ,

 

[2StrokeFondler]

Mods ,

Yeah, nice try posting some photoshopped ... holy cow, it's real. Good job! Looks like factory made.

 

[heimannm]

 

[Orange Ripper]

The FIL’s stock 51
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V.S my slightly modified 55 with a muffler mod, this thing cleans right up in the wood and sounds super good on top of running awesome!
View attachment FullSizeRender.MOV

 

[ballisticdoughnut]

Just modified this 288 muffler for my 181. Removed the little flap inside and flipped the outlet. Debating on removing the larger deflector but this is what I got for the time being. Saw originally had the quiet tone muffler, wanted to save it which is why I went with 288 muffler. Still gotta paint it but I’ll get to that later.

 

[Squareground3691]

I use those 288 deflectors on a number of different saw’s,