Lakeside53's --361 muffler mod w/photos
- Thread starter bri
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Here it is with the regular clutch cover on. The muff mod was never designed to cope with the regular cover but it goes on just fine and doesn't look too bad either. The chain brake touches the pipe but works fine 
hh1341
ArboristSite Member
820 PowerBee
Does anyone have any muffler mods for an 820 Powerbee motor. I need to build a muffler for the mill I'm building and need now only to build the muffler.
TIA
jerry-
Does anyone have any muffler mods for an 820 Powerbee motor. I need to build a muffler for the mill I'm building and need now only to build the muffler.
TIA
jerry-
gonecountry
ArboristSite Operative
Here it is with the regular clutch cover on. The muff mod was never designed to cope with the regular cover but it goes on just fine and doesn't look too bad either. The chain brake touches the pipe but works fine
So BobL is ther any video of your saw running so we can hear that pipe. If it has been posted before I havent found it. If it hasnt you should make one:greenchainsaw:
muffler mod on small poulan
heres an easy mod on a small poulan saw,,,
1st, drill out the baffle holes, i added an extra one at the bottom,, next, i closed up teh small original slit it the muffler case, it came out the back, and got oil all over teh saw,,then assemble teh screen, and baffle back in the case,,, finally, i cut out the front case, and migged in an outlet pipe,,,
still need to re-assemble the saw, adjust the carb and cut some wood...........
heres an easy mod on a small poulan saw,,,
1st, drill out the baffle holes, i added an extra one at the bottom,, next, i closed up teh small original slit it the muffler case, it came out the back, and got oil all over teh saw,,then assemble teh screen, and baffle back in the case,,, finally, i cut out the front case, and migged in an outlet pipe,,,
still need to re-assemble the saw, adjust the carb and cut some wood...........
Sorry but my DSLR has no video recording capability and my phone camera is kaput. I will see if BIL can come around with his camera to the milling yard and record the saw. With the 14 mm opening insert it sounds more like a very loud scooter than a chainsaw. I have installed the 15 mm opening but can't run the saw at home or the neighbors will go spare. I have 16, 17 and 18 mm inserts plus of course no insert , or fully open at 19 mm, that I will eventually try out. The reason I have done this is because this is purely a milling saw and I want to stay in tuning range of the main jet without going too lean. This is just a hobby for me so I am in no rush to do this, fortunately I'm fairly patient so this could take me a while to sort out.
gonecountry
ArboristSite Operative
BobL Thats alright, just curious as to how it sounds. When ever you get a chance to record some vid lets hear it. I bet it sounds good, different good 
hh1341
ArboristSite Member
My mod
This is an old thread, but it might be helpful.
I explain the math I used to arrive at my sizes.
http://www.arboristsite.com/showthread.php?t=90616
Carl
This is an old thread, but it might be helpful.
I explain the math I used to arrive at my sizes.
http://www.arboristsite.com/showthread.php?t=90616
Carl
Thanks Carl but I have no probs working out the relative area increases. What I don't want to do is open the pipe up so much that the saw runs too lean. The inserts allow me to open up the pipe in a controlled way to make sure I stay within the tuning range of the main jet. I don't want to increase the jet size to enable me to run at fully open (ie 19 mm) as this sucker is a milling saw and already uses enough juice as it is.
hh1341
ArboristSite Member
Inserts
Bob, I went with inserts too.
I found it worked best at 19mm, then I put a stubby 8 degree megaphone on it, just for laughs, and it even worked better. Ton more power.
Carl
Bob, I went with inserts too.
I found it worked best at 19mm, then I put a stubby 8 degree megaphone on it, just for laughs, and it even worked better. Ton more power.
Carl
Motodeficient
ArboristSite Guru
How much louder was it with slits in the side of the muffler? I might go this route on my 361
SLlandscape
ArboristSite Operative
okay, now that I have some free time (at least until the next page out) here are a few pictures of the muffler on my ms 310 that I want to mod. I'm looking for any suggestions on what size of hole to make and where I should put it. the 2nd pic is with the cover and spark arrestor removed. Thanks in advance.
A side note: directly above the 2 slots is a hole, above the baffle, that goes straight to the block with no obstructions. this is where I am considering the placement of my port. I hope I am not confusing any one in that description.
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on mine I connected the two outlet holes in the muffler and made a slot 3/8" wide between them then I cut out the bottom of the deflector so looking at it straight on you cant tell I did anything but if you look from the bottom you can see how its opened up. Made quite a difference in the saw.
Bowtie
Gearhead
I have about 2 tanks through the new 361. Couple more, and Im gonna Lakerize it. Best muffler mod yet in my opinion. It works awesome, and looks classy! Plus, its easy to do. 
Stihlman441
Addicted to ArboristSite
Even a saw as new as the Stihl 441 can be easily muffler modded!!!
How much differance has this mod made to your 441
Cheers
Smokeeater514
ArboristSite Lurker
MS 180c
Would there be any reason to do a mod on my MS 180c (if so what is recommended) that I just picked up for $20?. Im rebuilding it for something to do.
Would there be any reason to do a mod on my MS 180c (if so what is recommended) that I just picked up for $20?. Im rebuilding it for something to do.
absoulutely. you need to put a different carb on it though cause the stock one isnt adjustable. look here for the carb mod http://www.arboristsite.com/showthread.php?t=98067&highlight=adjustable+carb
Its really easy to do and well worth it.
Its really easy to do and well worth it.
JJay03
ArboristSite Guru
Still havnt done mine yet but I love using the saw even stock.
