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muffler mod on my 455 rancher with pics

Discussion in 'Chainsaw' started by o8f150, Feb 13, 2012.

  1. o8f150

    o8f150 Tree Freak

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    got bored today so i figured i would do an mm on this one,, now remember i did absolutely NO,,NONE,,0 cleaning on this saw,, this is the one i got last week,, anyway got the muffler off and decided on the right side, this muffler was easy to do,, no baffles or anything in the way,, i had the deflector so i fitted it to the muffler,, drilled a 1/2 inch hole the elongated it to 3/4 inch,,, added some screen then used 3 sheet metal screws to hold it all together,, here are the pics from start to finish,,,, it seemed to wake her a a bit,,don't know how much until i get her in some wood,, i did leave the factory exit port the way it was

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  2. jus2fat

    jus2fat Two Harley Fatboys

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    Nice job..o8..!!

    I much prefer a MM exit pointing forward rather than to the side..!!
    :cheers:
    J2F

    P.S...I would have guessed you would have sold that saw..it's really clean..!!
     
  3. ncfarmboy

    ncfarmboy Addicted to ArboristSite

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    Looks great! Very nice job. What deflector did you use? I need to do my 455.
    Shep
     
  4. o8f150

    o8f150 Tree Freak

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    it was off an echo,,, if i remember right it was the 600p
     
  5. 3000 FPS

    3000 FPS Addicted to ArboristSite

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    I have a 455 and will have to give that a try. Thanks for the pics. I just did this on a Poulan 3450.
     
  6. o8f150

    o8f150 Tree Freak

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    looks good 3000
    i normally would pipe and braze but because of the metal it is made of i was kind of scared to do it that way
     
  7. 3000 FPS

    3000 FPS Addicted to ArboristSite

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    I do not blame you. I did this with a tig and blew a couple of holes in it and then had to go back and weld them up also. Practice Practice Practice.
     
  8. Dylan19822017

    Dylan19822017 New Member

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    Im
    I can't seem to be able to load the photos and I am also looking to upgrade my 455
     
  9. Suzuki

    Suzuki ArboristSite Lurker

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    Photobucket decided to charge $400 a year to have "third party linking" now. (hosting the photo and having it linked to in forums such as this)
    Many individuals including myself opted to delete folders and bail on photobucket rather than pay $400 a year.....

    This thread is an example of the information that was lost to the world as a result of that move on Photobucket's part....
    I will never be able to trust that company again....
     
    CJ Brown, svk, 3000 FPS and 1 other person like this.
  10. 3000 FPS

    3000 FPS Addicted to ArboristSite

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    That is why I never used Photobucket.
     
  11. 3000 FPS

    3000 FPS Addicted to ArboristSite

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    Here is a few pics of my 455 rancher that I tore down and put back together. It was like brand new when I tore it down.

    001.JPG

    Notice how the two handles stay together and are one piece.
    002.JPG

    Here you can see the intake showing it is a strato saw and not a lot you can do to modify it.
    003.JPG 005.JPG
     
    CJ Brown likes this.
  12. 3000 FPS

    3000 FPS Addicted to ArboristSite

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    Not done yet.

    The bottom half of the crank case is molded right into the plastic and does not come out. As you can see it is a clamshell. It also has a o-ring for sealing. I used both the o-ring and some sealer on the crank case when I buttoned it up.
    006.JPG

    Look at where the transfers are located. both on one end.
    007.JPG


    External view of the covers where the transfer ports are at.
    008.JPG


    I took the covers off of the transfer ports to show how they are designed. I did open those up a little and cleaned up any casting ridges. Note that it uses a o-ring for sealing.

    009.JPG

    Then I opened up the muffler to get it to flow better and removed the limiters off the carburetor.
    002.JPG
     
    Suzuki and CJ Brown like this.

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