Echo 2511T Muffler Mod Instructions/Pics?

[stantonizm]

I was wondering if anyone had some good pictures and instructions of how they muffler modded a 2511T.

I’ve done a lot of searches and have found some varied info and a few pics, but the pics were from full cat-removal/ welding jobs that I don’t have the capability to do. I did find one good pic showing the internals.

My biggest question is this: are the additional holes/slots just going through the exterior shell of the muffler or are they cutting all the way through the interior piece that has the cat built in? And where is the best place to do this that isn’t going to melt a hole in the cover? Thanks.

 

[ptjeep]

Scroll through this video to the muffler part and you can see what needs to be done.

 

[stantonizm]

That’s exactly what I needed. Thanks

 

[full chizel]

If you do it let us know how it goes.

 

[stantonizm]

Update:

So after breaking the saw in this weekend I decided to put a new Stihl 63PM chain on it. I figured I probably wouldn’t do the muffler mod in case I need the warranty but once I had the cover off, I thought I’d check out the muffler anyway. I decided to drill a hole through the baffle from the inside but was going to leave the front untouched, so it wouldn’t be noticeable. Well I over-shot through the baffle and the front metal was so thin it put a dent with a tiny hole in it, so I went ahead and drilled it out. At this point I kinda regretted starting the project. It’s not a major hole, I think it ended up at 7/32nds, but it’s a straight shot through.

I tuned it up as best as I could by ear. Here was the final tuning cut in a red oak we cut last year. It felt really strong. I think I had it too rich before and it seemed a lot easier to hear the difference between the 2 and 4-stroke on video after the hole.

 

[stantonizm]

Last night I was looking at replacement muffler availability. It looks like the Echo part A030000851 is an OEM No CAT muffler for the 2511T. I wonder how that would work compared to a muffler mod? Seems like it would be much less noticeable if the saw ever needed warranty work.

 

[full chizel]

I didn’t know there was a non-CAT muffler

 

[stantonizm]

I didn’t know there was a non-CAT muffler

The user manual has A030000860 has the stock part number, but the parts sites have the A030000851 as a 2511T muffler and it says no cat. I might try it out for $40.

Looking at the Echo Canada 2511T manual, the 851 is listed as the OEM replacement. Are Canadian emission standards lower than the US?

 

[caesarleigh]

Looking at the Echo Canada 2511T manual, the 851 is listed as the OEM replacement. Are Canadian emission standards lower than the US?

The Canadian parts fiche is broken into two groups by serial #. Mine is in the second group which uses the 851 muffler. The other group uses the 860.
I ASSumed Canada has the same emissions as the USA.
My manual says EPA 2010 and/or CARB Tier 3.
My saw was purchased new September of 2018 & one of the first at my dealer,

 

[ScottRSteeleArborist]

The user manual has A030000860 has the stock part number, but the parts sites have the A030000851 as a 2511T muffler and it says no cat. I might try it out for $40.

Looking at the Echo Canada 2511T manual, the 851 is listed as the OEM replacement. Are Canadian emission standards lower than the US?

Were you already able to try swapping the muffler?

 

[Yotaismygame]

I'll be modding and porting my 2511t in the next few months. I could post some info up

 

[Ketchup]

Ridiculous.



I grind the stock little deflector off on a bench grinder and make a much bigger hole to the south.



Then I mark out a small red97 deflector.






Then I cut a screen to match.

 

[Ketchup]

I trim the plastic cover to fit the larger deflector. Aiming the deflector so it doesn’t melt the plastic takes some patience.

 

[Yotaismygame]

Other information and pictures had me thinking there was a cat in this muffler. So after cutting this thing in half I found I wasted my time

the inner baffle wouldn’t come out so I drilled several holes in it

 

[Yotaismygame]

I totally hacked this muffler up but it will suffice. #forscience

Next time I’ll do what ketchup did. The non existent cat in this muffler really screwed this up. Also this non cat muffler is still really restrictive.

 

[Yotaismygame]

I've been scouring the internet for information on modding this saw and it's slim pickings. Seems like everyone thinks their mufflers have cats in them. Lot of bypassing the cat talk. I wonder how many of these saws actually do. Could it be regional? Tonight I'm going to make a thread about porting and muffler modding them. Hopefully that will help others out.

 

[stantonizm]

Were you already able to try swapping the muffler?

I never ended up buying it. I did enlarge the hole on the one I had drilled through.

 

[HydeTreeWorks]

Scroll through this video to the muffler part and you can see what needs to be done.

Can I ask where you had the saw ported the 2511t?