Muffler for MS460

Raganr · Dec 31, 2011

Not a fan of the EPA, so I ordered a dual port muffler (muffler and cover) from Bailey’s. I wanted to know if anything is gained by using the aftermarket muffler. I ordered a gasket so switching out is not an issue; the new one just looks a little more restrictive to me.. A reviewer on Bailey's mentioned removing a baffle...

Bailey's - Dual Port Muffler for Stihl 044, 046, MS 440 & MS 460

Factory Muffler

Bailey’s (NWP) Muffler

Thanks for having me aboard. I have enjoyed lurking here for the past year.

usmarinekurt · Jan 2, 2012

Im getting the same one. How do you like it?

tlandrum · Jan 2, 2012

i cut that baffle completely out and then open up the factory exit under the screen.

user 64030 · Jan 2, 2012

Raganr said:
Not a fan of the EPA, so I ordered a dual port muffler (muffler and cover) from Bailey’s. I wanted to know if anything is gained by using the aftermarket muffler. I ordered a gasket so switching out is not an issue; the new one just looks a little more restrictive to me.. A reviewer on Bailey's mentioned removing a baffle...

Bailey's - Dual Port Muffler for Stihl 044, 046, MS 440 & MS 460

Factory Muffler

Bailey’s (NWP) Muffler

Thanks for having me aboard. I have enjoyed lurking here for the past year.

I see one thing I don't like on the Bailey's.. the spark arrestor screen is outside the case, and there is MUCH less screen surface area for the exhaust to travel through. I know it is a dual port.... but w/ that little amount of screen surface area, it will clog w/ carbon fast, and make it a single port. :biggrin:

dw

Bowtie · Jan 2, 2012

dwraisor said:
I see one thing I don't like on the Bailey's.. the spark arrestor screen is outside the case, and there is MUCH less screen surface area for the exhaust to travel through. I know it is a dual port.... but w/ that little amount of screen surface area, it will clog w/ carbon fast, and make it a single port. :biggrin:

dw

Nothing that cant be fixed with a dremel tool!

385XP · Jan 2, 2012

I would get rid of the baffle and screen . Do you have any pictures of the front cover.oh dont forget to retune your carb.

Stihl-Pioneer · Jan 2, 2012

If I remember right, the factory dual port I put on my 460 did not have any baffle inside.

BloodOnTheIce · Jan 2, 2012

Raganr said:
Not a fan of the EPA, so I ordered a dual port muffler (muffler and cover) from Bailey’s. I wanted to know if anything is gained by using the aftermarket muffler. I ordered a gasket so switching out is not an issue; the new one just looks a little more restrictive to me.. A reviewer on Bailey's mentioned removing a baffle...

Bailey's - Dual Port Muffler for Stihl 044, 046, MS 440 & MS 460

Factory Muffler

Bailey’s (NWP) Muffler

Thanks for having me aboard. I have enjoyed lurking here for the past year.

Yep you would have been better off just ordering the dual port cover.

The muffler you now have is more restrictive.

ratso · Jan 2, 2012

muffler

Yup T landrum has it right open both holes.

Would sure be nice to just buy the muffler without having to modify.

K.C. · Jan 2, 2012

On my 046 Mag I used the factory muffler, drilled much larger holes in the stock baffle, opened up the factory outlet port then added the dual port cover from Baileys. You will need to fatten up the tuning a tad for the easier breathing and you will notice more power and it's alot louder!

BloodOnTheIce · Jan 2, 2012

ratso said:
Yup T landrum has it right open both holes.

Would sure be nice to just buy the muffler without having to modify.

You can but you have to buy OEM

Like this one.

or

BloodOnTheIce · Jan 2, 2012

Here's the part number for the big outlet hole, dual port 046 Mag muffler
that's in the picture.

1128 140 0616

Anthony_Va. · Jan 2, 2012

Definetly just need the cover. Since you got that one, do what Terry said and cut the entire front off that baffle. Then open up the original outlet up wide as you can without having to cut the deflector.

Have you pulled the limiter caps yet? You may need to adjust your carb after doing the muffler mods. If so, you may need to remove the caps.

Stihlman441 · Jan 2, 2012

BloodOnTheIce said:
You can but you have to buy OEM

Like this one.

or

This is how the Ozzy 460s come standard to us.

young · Jan 2, 2012

Stihlman441 said:
This is how the Ozzy 460s come standard to us.

with 800 more dollars.:hmm3grin2orange:

blsnelling · Jan 2, 2012

dwraisor said:
I see one thing I don't like on the Bailey's.. the spark arrestor screen is outside the case, and there is MUCH less screen surface area for the exhaust to travel through. I know it is a dual port.... but w/ that little amount of screen surface area, it will clog w/ carbon fast, and make it a single port. :biggrin:

dw

You're exactly right. That's a big draw back on the Baileys muffler. Stihl knew that the screen flowed less than the same area without a screen, so installed the screen in a way that it had much more surface area. That way the screen would not be a bottle neck. On the Baileys muffler, your outlet hole is going to have to be much larger in order to get enough screen surface area. I recommend you use your original muffler body and the new cover. There's no need to even mess with the baffle in the OEM muffler. Open up the exhaust outlet as much as the deflector will cover. Finally, open up the port on the muffler cover.