Show off your muffler mods

[kurtz]

Added two holes to my Echo 7310 exhaust today. It’s not ported and it needs all the help it can get.

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[CJ Brown]

Added two holes to my Echo 7310 exhaust today. It’s not ported and it needs all the help it can get.

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Very nicely done. I also like the felling dawgs on your saw - just about the perfect size I think.

 

[Moparmyway]

Muffler mods ...........

 

[kurtz]

Very nicely done. I also like the felling dawgs on your saw - just about the perfect size I think.

Thanks. I like those dawgs too. They’re the factory ones from echo. One of the better things about the saw.

 

[farminkarman]

562xp muffkin mod

 

[farminkarman]

Ended up making a new screen as well.

 

[farminkarman]

Customer wanted a pipe outlet on his 395xp.

 

[Kiwioilboiler]

Customer wanted a pipe outlet on his 395xp.
View attachment 349872

WHAT!!??

 

[farminkarman]

WHAT!!??

She aint that loud, lol.

 

[Moparmyway]

Getting the rear sections fully welded. Autogenous (no filler)



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[farminkarman]

Getting the rear sections fully welded. Autogenous (no filler)

View attachment 349940

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Looks great!

 

[Dolkitafreak]

7310

 

[Kiwioilboiler]

Getting the rear sections fully welded. Autogenous (no filler)

View attachment 349940

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Wotcha working on Kevin?

 

[Moparmyway]

Custom stainless exhaust for the wifeys 69 convertible mudstain

Pics in Grease Monkey Garage thread

 

[charles.mann]

Started on this build late thur afternoon and finished up a lil after lunch yesterday. Still learning to tig, learning the machine and getting it dialed in.

I used 1/8” on the bolt on base and 0.080” for the curved section and sides. I used a piece of 2 1/4” od stainless tubing, tack welded the piece to the tubing and used a rose bud to heat the strip up and persuaded the metal with a brass hammer to roll/fold over the tubing. Tacked the top and sides together, then tacked to the base plate and stitch welded everything in hopes to prevent warping, which it still warped but only about a penny thickness on one ear.

I gotta order some woven stainless mesh and some 0.060” and 0.032” 1’x1’ plate and try it again, and put an upward deflector plate to keep the heat off the case half and tree dogs.

 

[Lee H]

Started on this build late thur afternoon and finished up a lil after lunch yesterday. Still learning to tig, learning the machine and getting it dialed in.

I used 1/8” on the bolt on base and 0.080” for the curved section and sides. I used a piece of 2 1/4” od stainless tubing, tack welded the piece to the tubing and used a rose bud to heat the strip up and persuaded the metal with a brass hammer to roll/fold over the tubing. Tacked the top and sides together, then tacked to the base plate and stitch welded everything in hopes to prevent warping, which it still warped but only about a penny thickness on one ear.

I gotta order some woven stainless mesh and some 0.060” and 0.032” 1’x1’ plate and try it again, and put an upward deflector plate to keep the heat off the case half and tree dogs.

View attachment 349971 View attachment 349972

Learning the welding machine and wire size are crucial, Once you get that you will see
how easy it is. In certain applications adding gas to the opposite side helps greatly it helps
like in building pipes.

 

[charles.mann]

@Lee H
Yes sir, filler wire was to big and even though i was at 75 amps (should have went to probably 90-100) it took longer to heat the two pieces up and melt the filler. I guess having a 1” thick, 8” round ingot of copper to help pull the heat worked to good, until everything was hot. Once the muffler was hot, i backed off on the foot throttle about half way and was flowing the filler good once it melted.
Ill get some 1/16” filler and build another one out of thinner material. Plus i think i needed to swap from the #10 cup, to a 6 cup since i dont need a lot of stick out on my tungsten.
Plus, that was my 2nd time welding stainless. I bought the machine for aluminum and still need a LOT of practice for AL. My stainless and mild steel welding is better than my AL, but my steel is far better than my stainless.

 

[Moparmyway]

Stainless can be very difficult to weld, it needs lots of shielding gas, and larger cups than you would think !! Good job getting yourself outta your comfort zone, one step at a time and you’ll get there !!! My R.O.T. Is to set the machine to 1a for every 0.001 thickness and use my foot to just keep it going

 

[Moparmyway]

WARNING:
Photo heavy posts coming up.
This 500i has been well used indeed, some weaknesses have allready begun to show up, but nothing major yet. I’ll let the pictures speak for themselves and comment here/there.

Id also like to thank @TINYHULK for sending me his saw to put up here as we go through this process !!!

 

[Moparmyway]

Some of the damage from normal use in a daily worked environment.