1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)

Muffler Mod for the 290,310,390

Post in 'The Gear' started by southbound, Jan 22, 2011.

Thread Status:
Not open for further replies.
  1. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    yes every little bit helps up to 50-75 percent over stock then #'s start to fall the other way.

    Helpful Sponsor Ads!





  2. ikessky

    ikessky Minister of Fire

    Joined:
    Sep 2, 2008
    Messages:
    862
    Loc:
    Northern WI
    Well, with still going through the baffles and having all of the area that I opened up still covered by the deflector, I'm guessing I'm boarding on the 50% mark. If that even.
  3. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    Are you able to do a video? running in the cutt
  4. ikessky

    ikessky Minister of Fire

    Joined:
    Sep 2, 2008
    Messages:
    862
    Loc:
    Northern WI
    Probably at some point, not until I start cutting in the spring though. What are you looking/listening for?
  5. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    I like to hear the motor check (rpm's in the cut) how it holds them through out the cut, and the time it takes to make the cut. Chip discharge aswell.
  6. Jutt77

    Jutt77 Feeling the Heat

    Joined:
    Dec 18, 2010
    Messages:
    371
    Loc:
    Idledale, Colorado
    I modded my 026 muffler last week and its running a tiny bit lean. Bad news is that it has one of the stupid intellicarbs that doesn't have the H adjustment screw. Good news is that I just ordered a brand new WT-194 carb thats fully adjustable which should be here next week.

    I've never replaced the carb on this. Should I get anything else (gaskets, hoses,etc.) while I have the carb removed? Its running great so I dont think anything else needs replacement, just figure I would take care of some preventative maintenance while its torn apart.
  7. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    Gasket should come with it...easy install. Nice move on the Carb. aswell. I would darn sure put a new fuel filter, spark plug and clean the crap out of the air filter.
  8. Jutt77

    Jutt77 Feeling the Heat

    Joined:
    Dec 18, 2010
    Messages:
    371
    Loc:
    Idledale, Colorado
    Sweet, thanks Jay
  9. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    If not (gasket) save your next case of beer box.....could come in handy! lol
  10. ikessky

    ikessky Minister of Fire

    Joined:
    Sep 2, 2008
    Messages:
    862
    Loc:
    Northern WI
    I'll see what I can get for you, but it really depends on when I can get back to the woods. Right now I don't have anything easily accessible because we don't keep all the woods roads plowed in the winter.
  11. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    No hurry this is going to be a very long thread but its amazing what you can learn from a video.
  12. ikessky

    ikessky Minister of Fire

    Joined:
    Sep 2, 2008
    Messages:
    862
    Loc:
    Northern WI
    I listened to the Madsen wav file again and am pretty sure I got it right. If anything, I'm a tad on the rich side.
  13. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    Thats where you want to be. Now if you can hear that listen to your saw and then you can apply pressure to keep it tune through out the whole cut...Thats where you need to be!

    Auto tune if you will...lol
  14. ikessky

    ikessky Minister of Fire

    Joined:
    Sep 2, 2008
    Messages:
    862
    Loc:
    Northern WI
    I'm with southbound. If this saw ever dies, I'm turning it into a 390. However, I'm also keeping my eye on ebay to try to find a 440 to rebuild.
  15. southbound

    southbound Minister of Fire

    Joined:
    May 26, 2008
    Messages:
    733
    Loc:
    mid south tn
    I f I ever get back to work I may be able to help with a 046 project saw....


    I have to wait and see now....
  16. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    440/460/660 keep your eyes open on craglist too.
  17. ikessky

    ikessky Minister of Fire

    Joined:
    Sep 2, 2008
    Messages:
    862
    Loc:
    Northern WI
    Not in my area! The only thing on craigslist around here are people looking for stuff. Next time I'm at my "local" dealership I'm going to ask them to keep me in mind when they take trade in's or rework jobs.

    I told my wife that a bigger, more powerful saw will let me cut faster so I can get done with my firewood quicker and have more time for her and the kids. Judging by the look she gave me, I'm guessing that she can see right through my plan!
  18. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    Still a soild plan...Everytime you cut just give her all bad news! Your on the right track.lol Another good thing about those saw you dont lose any money if you ever have to sell.....
  19. OhioBurner©

    OhioBurner© Minister of Fire

    Joined:
    Aug 20, 2010
    Messages:
    944
    Loc:
    Central Ohio
    Southbound, thanks for the informative post. I plan on trying to do this mod tomorrow (on my MS290), and be cutting this weekend, along with sharpening both my chains with a real sharpener for once - just picked up the Granberg File-n-joint... if I can figure it out lol.

    Anyhow I was just wondering if there were any new tips you might have. One thing I was contemplating was the size of the holes... you say if you were to do it again you would drill 3 1/2" holes... do you think this is probably best then? Most of my tools are yet to be unpacked / organized but I do have a step bit out so can cut to any size.

    I'm still a little fuzzy on the limiting cap thingies, but I think once I take a look at em I can figure it out (I hope).
  20. southbound

    southbound Minister of Fire

    Joined:
    May 26, 2008
    Messages:
    733
    Loc:
    mid south tn
    I think that the "best" would be the largest sized hole that gained the most.. I lust don't know what that is yet...

    If I was to do this again on one of mine I would save some time and trouble and just use one drill bit and it will be a 1/2 inch...

    I do not think you will have any trouble with a half I just have not done it so I can't recommend it....

    Good luck post some pic's and let us know how it turns out....
  21. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    029/290-7/16 seems to be the sweet spot. 1/2 close enough for me. Oh small stright pipe is even better! (this should be one whole not 2 or 3)
  22. OhioBurner©

    OhioBurner© Minister of Fire

    Joined:
    Aug 20, 2010
    Messages:
    944
    Loc:
    Central Ohio
    Just one 7/16 or multiple?

    I saw a pic of one with the little piece of pipe... looks neat I'd like to do it but dont have the time or tools handy right now. I could always wait to do it, but I bet it wouldnt be until summer when I was done cutting for the year.
  23. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    ONE!
  24. southbound

    southbound Minister of Fire

    Joined:
    May 26, 2008
    Messages:
    733
    Loc:
    mid south tn
    You sure????

    If so I open mine up way to much...
  25. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,972
    Loc:
    Anderson, Indiana
    lol My 460 is running a 3/4 inch small stright pipe.....Yea I am sure 3-1/2 holes in a 290 is to much probally better than stock but your losing power as well.
Thread Status:
Not open for further replies.

Share This Page