029/290 muff mod - found the sweetspot

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chainsaw1

chainsaw1

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I dont know if their is a saw out their that was choked off more than that MS650 when i got it, but after the port job it really really brought that to life also, but now with the BB kit it should be even better yet.
 
LazyJ

LazyJ

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SectorB, taking close note when I took my limiter caps off my H jet was limited to open only to about 7/8ths of a turn out, with muffler mod its now set to almost 1.5 turns out. Search on how to remove the caps and git-r-done before you melt a piston. Probably won't gain much power until you turn the fuel up anyway.
 
stihlboy

stihlboy

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Wild Mod

Picture054.jpg


i found the pipe in my garage it went to a motor scooter
 
SectorB

SectorB

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LazyJ,

I took the saw over to the shop to see what type of RPM's it was turning.

Idle was 3000 at WOT it was 13000 and some small change. I took it today and ran through some hickory with no problems. The saw is running great, but maybe a little more fuel will really help. Thanks for the info.

Sector
 
nmurph

nmurph

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B,
i took my limiter caps off by using a sheetrock screw. i have heard some say they damaged theirs using this technique, but i did not have a problem. once they were out, i took a razor and trimmed the tabs off and tuned it. don't forget to put the caps back on, as they keep the screws from moving from vibration.
 
SectorB

SectorB

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Lazy and Murph,

Took the limiter caps off, tuned it and it is running at 3000 and 13000 and sounds like a much better saw. Thanks for all the info. :cheers: Now i need to get a new chain. I hit a grown over pipe and ripped off a lot of cutters
 
Bruce Hopf

Bruce Hopf

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I'm planning on buying a Stihl 044, here in the very near future, for rebuilding, and for my use. I also am planning to do a Muffler Modification, as well.
I never knew, or never heard of Muffler Modification, until I joined AS. Can you fellas, tell me which design that you guys were so nice to post pictures, would be the best suited for this 044. I mostly cut Soft Maple, and Ash here in my Bush. All the help, and advice I can get is Extremely Appreciated. Thanks in advance for your help. Bruce.
 
blackoak

blackoak

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I'm planning on buying a Stihl 044, here in the very near future, for rebuilding, and for my use. I also am planning to do a Muffler Modification, as well.
I never knew, or never heard of Muffler Modification, until I joined AS. Can you fellas, tell me which design that you guys were so nice to post pictures, would be the best suited for this 044. I mostly cut Soft Maple, and Ash here in my Bush. All the help, and advice I can get is Extremely Appreciated. Thanks in advance for your help. Bruce.

Bruce does your 044 have a DP muffler on it, if not get one and you should be set to go as far as a muffler mods on an 044. Richen up the high side a little and let her rip.
 
Bruce Hopf

Bruce Hopf

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Bruce does your 044 have a DP muffler on it, if not get one and you should be set to go as far as a muffler mods on an 044. Richen up the high side a little and let her rip.
Now you have me lost. LOL. How do you tell if you have a DP Muffler, from the other? As you know, I'm new to this Muffler Modifications. Thanks Bruce.
 
Bruce Hopf

Bruce Hopf

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Bruce, here's some pics I posted of the DP cover.

http://www.arboristsite.com/showthread.php?t=72458

Thanks for the Picture Post. I'll just wait, and see what happens first once I get this 044 up and running, before I do any of this fancy work.
I might be not Bold enough to try it, until I get used to the Chainsaw First. The piston was seized, but with some real good penetrating oil, I was able to get it freed. Bruce.
 
Bruce Hopf

Bruce Hopf

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I took the Muffler off my Sthil 044, that I just Bought, and it didn't look anything like the Pictures posted here, Once I got the Plate off the Muffler, you could see the Exhaust Port. Is that supposed to be like this for a 044? Here are some Pictures of the Muffler. Your Advice is Greatly Appreciated. Thanks. Bruce.
 
Medman

Medman

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Newbie process to the muffler mod

I started to cut this morning and it started to rain hard so I found my self with some time to do some maintenance on my 029. Then I saw my drill and the rest was history.
I ran into some problems tuning it up but i think that i am close. I have the burble sound at max rpm. the response is great.
Now I am ordering a tach just so its right.
I haven't had a chance to test it on my 33 cord pile yet but tomorrow is another day.
I just want to say thanks to Lazy J for the pics. And to all the long time members of the site for all the information.
I have been a weekend warrior for many years and never knew how chains and mods could boost the performance.

P.S. What should my rpms be on a 029 with the muffler mod?\

Thanks again Lazyj and everyone.:cheers:
 

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