ECHO CS 2511 TES muffler mod

[Joseph]

hello every body

I send you pics of my muffler mod on my CS 2511 t

the exhaust has been cut as you will see in the photos.

this to remove the inner part containing the honeycomb catalyst.

I removed the catalyst to prevent its fouling with carbon gases do not change the flow of gas over time but also to facilitate the flow.

the two outer parts were then welded and the original outlet sealed by welding so that the gases relax at maximum in the exhaust and exit the opposite of the gas inlet in the silencer.

and finally a hole made best with the welding of a 13mm stainless steel tube inclined inner diameter to direct the gas where I machined the plastic housing and the tube slightly flattened to have an opening of about 60 to 70% of the entry into the muffler.

the welding was done at tig and it was very difficult because the stainless steel sheet of the silencer is extremely fine.
brazing might be more appropriate.

I have test the 2511t before muffler mod
In same peace of hard wood

7 second original muffler
5 second muffler modded

 

[Joseph]

Can you say me what max RPM you adjust the carb with muffler mod?
Mine is 10 or 15 tanks use
and run about 13500 RPM

I wouldn't broke the engine with to hi rpm or to lean adjust

 

[Joseph]

pics

 

[Joseph]

others

 

[Nutball]

13,500 sounds good. From what I can tell, it honestly looks like you did a very good job welding, but I've never welded before.

Thanks for sharing that unique muffler mod.

 

[Rob Stafari]

Hi Joseph. Was going to recommend over on the TreeBuzz that you come ask your question here, then saw that you already had. Cheers.