E-tech muffler mod??

[Timberhauler]

I picked up my new 346XP last week,and it is an E-tech model.How do I mod this muffler?..And how could I make this saw a non e-tech model.Any input would be greatly appreciated.

 

[ford832]

I'm sure there are lots here who could tell you the best mod for a power improvement but unfortunately I'm not one of them All I wanted to do with mine was cool it down without losing any power.Anyway,on mine I drilled two 5/16" holes into to the plate in the middle of the muffler directly out from the exhaust port and another 5/16 hole in the tube that goes to the exhaust outlet about 3/4" down from the top.The reasoning was that not all the exhaust had to pass through the cat to escape and what did would do so with less restriction.It seems to work as it has cooled the muffler down quite a bit with no change in power that I can see.This is no doubt quite conservative but gives me what I was after anyway.Oh yeah,one last thing,Troll says get rid of the green gas cap

 

[Timberhauler]

That's really all I'm after is to cool it down some,because it does get hot..I'm really not looking for a big boost in power.

 

[hornett22]

i'd call Bailey's and see if they can get you a non cat.

i'd run the #s off the muffler you have just to make sure.

 

[Urbicide]

The e-tech muffler should have "CAT" stamped on it near the actual part #. That is the clincher. Replacement non-cat oem is only a phone call away.

 

[keith c raymond]

My 346 is an e-tech also.I drilled a 1/2 in side the baffle and two 1/4holes through the outside of the muffler at the muffler bracket, then connected them with my Dremel.Just a little louder , and definetly cooler

 

[Timberhauler]

My 346 is an e-tech also.I drilled a 1/2 in side the baffle and two 1/4holes through the outside of the muffler at the muffler bracket, then connected them with my Dremel.Just a little louder , and definetly cooler

I was wondering where you had been.....How are you and the new 395 gettin' along?

 

[Timberhauler]

I got out that 346 today and ran nearly a half tank of fuel through it so I could really get a feel for how it was cutting and to see if what I did made any difference,and then here is what I ended up doing to the muffler.

I drilled four 1/8 inch holes across the middle of the muffler,then I drilled two 1/4 inch holes through the actual catalytic converter inside the muffler.That was all I could get to.Then I took a Dremel tool and a carbide cutter and cut the pipe off that runs from the catalytic converter to the actual exhaust hole...I eliminated all of it that I could reach from the inlet of the muffler.
The difference was alot more than I expected.The saw now accelerates much faster and cuts faster as well.There is also a noticeable difference in free rev RPM'S by ear(I don't have a tach)....I always thought the saw sounded like someone trying to talk with their nose pinched,now it breathes and I'm very happy with the results.It didn't cut that bad anyway,but I knew it could be better...Now it rips.

 

[ford832]

Very interesting....maybe mine needs a little more...er...modification

 

[outdoortype]

....I always thought the saw sounded like someone trying to talk with their nose pinched,now it breathes and I'm very happy with the results:

Good analogy. My E-tech sounded the same. I think the non-cat mufflers sound way better.

 

[ford832]

It's funniny how the sound of something reminds you of something else.I always thought my 026 sounded like the proverbial cat in heat with it's head stuck in a tin can

 

[troutfisher]

I was at the saw shop today, some of the new Huskys are labeled "e-series". Is this the same as "e-tech"? cat mufflers?

 

[Urbicide]

Keep in mind that when you mod a muffler you need to adjust the carburetor. The carburetor was set for the airflow previously allowed by the stock muffler. More air is able to be drawn in since the muffler is now able to let out more exhaust.You will need to richen-up the fuel mixture. Your saw may suffer damage caused by an extremely lean condition if you do not. The best way to set the carb is to use a tach. They are not expensive, not nearly as expensive as a new piston and cylinder, and you can use it on all of the saws you will eventually end up owning. opcorn:

 

[trimmmed]

Keep in mind that when you mod a muffler you need to adjust the carburetor. The carburetor was set for the airflow previously allowed by the stock muffler. More air is able to be drawn in since the muffler is now able to let out more exhaust.You will need to richen-up the fuel mixture. Your saw may suffer damage caused by an extremely lean condition if you do not. The best way to set the carb is to use a tach. They are not expensive, not nearly as expensive as a new piston and cylinder, and you can use it on all of the saws you will eventually end up owning. opcorn:

 

[ford832]

I don't think mine was set for much as the high speed was about 2/3 turn out.A razor blade made quick work of the "stop housing" then the plastic caps themselves(without removing carb).I would have just shaved the caps but found the plastic slots prone to strippiing so got rid of them altogether.High speed now is about 1 1/4 out and works well like that Low stays at 1 out,where it was from the factory.

 

[keith c raymond]

Hey Timberhauler,Ive just run my 395 once to buck up some logs for my neighbor next door,just one tank.We have just came back from a vacation and have been busy at work plus doing a minor reno on the bathroom.Also we had a lot of ice and it has been dicey to work in the woods.I hope to run it more soon.Sounds like you have your 346 in good shape.You moght want to richen it up a hair if you opened it up,unless you think its ok.I know im happy with mine.