This past week I had some time to get back into my free pile of Echos. Figured I would post some pics.
I did the tear down and clean a while ago. Parts have been trickling in so I finally got this one back together and running.
The first two 310s I did muffler mods on, I just pulled the muffler, drilled out the cat, then cleaned up the opening with a dremel.
I didn’t open up any holes because removing the spark arrestor assembly gave two additional small holes and the deflector was the major choke point (just removed it).
The cat from cylinder side of muffler.
I originally was going to take the same approach to removing the cat and got as far as drilling it out. The dremel work is not enjoyable so I decided to try and split the muffler and just remove the offending components.
Cat drilled out and cleaned up from a previous effort
2. As issued muffler with deflector and spark screen
3. OEM opening behind the deflector. Screen, deflector, and bolts discarded.
This was my first attempt at splitting a muffler and it went ok, I am sure I will get better at it with more practice. I used the smallest torch tip I had on my oxygen/acetylene rig and a screw driver.
Once the muffler was open, the guts fell out and I cut out the cat housing and baffle
All welded back together
Heated up the lip and folded/crimped the muffler and guts back together
Saw sounds pretty good. Once the new B/C arrive I will post a video of it running.
I have one more 310 then a 370 to do the same thing to so I will try and take some better pics as I do those.
I did the tear down and clean a while ago. Parts have been trickling in so I finally got this one back together and running.
The first two 310s I did muffler mods on, I just pulled the muffler, drilled out the cat, then cleaned up the opening with a dremel.
I didn’t open up any holes because removing the spark arrestor assembly gave two additional small holes and the deflector was the major choke point (just removed it).
The cat from cylinder side of muffler.
I originally was going to take the same approach to removing the cat and got as far as drilling it out. The dremel work is not enjoyable so I decided to try and split the muffler and just remove the offending components.
Cat drilled out and cleaned up from a previous effort
2. As issued muffler with deflector and spark screen
3. OEM opening behind the deflector. Screen, deflector, and bolts discarded.
This was my first attempt at splitting a muffler and it went ok, I am sure I will get better at it with more practice. I used the smallest torch tip I had on my oxygen/acetylene rig and a screw driver.
Once the muffler was open, the guts fell out and I cut out the cat housing and baffle
All welded back together
Heated up the lip and folded/crimped the muffler and guts back together
Saw sounds pretty good. Once the new B/C arrive I will post a video of it running.
I have one more 310 then a 370 to do the same thing to so I will try and take some better pics as I do those.