5xx series husky, cutting muffler in half

[kneedeepinsaws]

So I’ve been trying to figure out what would make the best muffler mod to promote scavenging for these saws. (550, 562, 572)

the diffuser in the center of these mufflers has a hole bunch of holes and I’ve been trying to figure out why. My only logical conclusion is that it’s not for emissions, there are too many holes, it’s gotta be for noise. More holes, more surface area, more dissipation of heat (sound).
So read here getting rid of it will promote better scavenging cause you have a nice big empty chamber to bounce an exhaust pulse back instead of a baffle in the middle to screw that up. I know a few of you have done this but what I really want to see is a pic of how you cut the muffler in half? From there I’m hoping to heat up that baffle and easily remove it with a B tank by breaking the brazing free. But I would like to know what you guys think of a couple of things

did removing that baffle show a noticeable difference in performance?
How did you do it?
Do you have pics of how you did it?

 

[ammoaddict]

Interested as well.

Sent from my moto g(7) power using Tapatalk

 

[cuinrearview]

Not exactly what you're looking for, but here's how I did mine, before cleaning everything up. Just an extra outlet and a straight shot through the baffle. It provided a real nice bump in power, and made it louder than a 10-10 Mac.

 

[kneedeepinsaws]

Not exactly what you're looking for, but here's how I did mine, before cleaning everything up. Just an extra outlet and a straight shot through the baffle. It provided a real nice bump in power, and made it louder than a 10-10 Mac.View attachment 304323 View attachment 304324

Thanks for the photo!
However been there done that.

the goal is to remove this see u next Tuesday.
This is an old mk1 550 can that I bastardized years ago but kept around. I just hacked it open quick with a diamond sawzall blade in hopes to keep the metal from bending at the cut. Is this what some of you guys are doing?

 

[HuskyHead]

In for the info.

 

[Canadian farm boy]

562 muffler. This is the only 5 series muffler that I’ll totally gut. 550 and 572 I basically just open up the inlet and outlet and weld on a taller deflector.

 

[cuinrearview]

Thanks for the photo!
However been there done that.

the goal is to remove this see u next Tuesday.
This is an old mk1 550 can that I bastardized years ago but kept around. I just hacked it open quick with a diamond sawzall blade in hopes to keep the metal from bending at the cut. Is this what some of you guys are doing?
View attachment 304330

Nah I knew it wasn't what you were looking for kneepads, I've thought though with all of the added noise the flow is probably adequate. The overall nutsack shape of the five series mufflers could be behind the extra noise though.

@Armbru84 has a pretty high zoot 550. I wonder how much is left inside that one?

 

[kneedeepinsaws]

Nah I knew it wasn't what you were looking for kneepads, I've thought though with all of the added noise the flow is probably adequate. The overall nutsack shape of the five series mufflers could be behind the extra noise though.

@Armbru84 has a pretty high zoot 550. I wonder how much is left inside that one?

Lol

kneepads???

yes the 5 series muff is a terrible shape imo

 

[kneedeepinsaws]

562 muffler. This is the only 5 series muffler that I’ll totally gut. 550 and 572 I basically just open up the inlet and outlet and weld on a taller deflector. View attachment 304337View attachment 304338View attachment 304339View attachment 304340View attachment 304341

Dang that is a much better approach than coming in from the top!!! Love it! I think that’s how I’m gonna handle mine next time thanks

 

[Mastermind]

I've tried everything. Went back to leaving the damn thing in. Noise fatigue is a real thing....and the gains ain't worth the added racket.

 

[kneedeepinsaws]

I've tried everything. Went back to leaving the damn thing in. Noise fatigue is a real thing....and the gains ain't worth the added racket.

So it is quite a bit louder with that diffuser removed?

 

[Mastermind]

So it is quite a bit louder with that diffuser removed?

Oh good lord is it stupid loud.