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  1. #1

    Question How to build a 2-stroke muffler the right way ??

    :confused6 :confused6 :confused6

    Hello !

    What should I think about when I building my own muffler/silencer for a 2 stroke engine ?

    Some guidelines ?
    How to ?
    Do and dont's ?



    Engine : Rotax 793 HO

    Max Rpm : 8000 rpm

    Number of cylinders : 2

    Max output : 140 Hp

    Carb : 2 * Mikuni TM-40




    ---------------------------------------------------------------------------------
    Lasse from SWEDEN.

  2. #2
    Join Date
    Oct 2004
    Location
    pennsylvania
    Posts
    14,217

    Default

    rule number one on silencer building ,-dont do it
    rule number two -buy one instead
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  3. #3
    Join Date
    Jan 2007
    Location
    Campbell Missouri
    Posts
    1,475

    Default

    yeah just buy one.. even if you go buy a stock one used... don't mess with trying to make one
    Rebirth of the blaster??

  4. #4

    Talking



    Who said life is easy ? *LoL*

    serious....
    I want to build my own muffler/silencer because there is no one out there for my aplication.....

    Someone have some advice ?







    .
    Lasse from SWEDEN.

  5. #5
    Join Date
    Jun 2007
    Location
    Pismo Beach, Ca
    Posts
    8,558

  6. #6
    Join Date
    Jul 2004
    Location
    Big Rapids, Michigan
    Posts
    2,332

    Default

    I visited Sweden just over a year ago. Beautiful country, & Beautiful vehicles.
    As for the silencer, I also have to admit that buying one is the most beneficial choice. However if you have a fabrication shop, they could be made. Does it have to be Spark Arrested?
    1985 LT250R Quadracer
    Manufacture Date: 12-84
    Hot Rod +8mm Rod, Cometic Alum. Spacer
    FloTek Drag/Dune port w/ Head Mod
    LA Sleeve STD Bore
    Weisco Piston
    AAEN Pipe
    FMF Turbine Core II Universal
    1Dirracing Ported Reed Block w/ Secrets
    Keihin 39mm PWK
    Nology Pro Fire Coil & HotWires
    7oz off FlyWheel
    Barnette Kevilar Clutch Kit
    K&N Cone Filter
    Burgard+2 +1 Chrome A-Arms
    +4 Chromoly Swingarm
    WORKS Fronts w/ Rezzys
    DuraBlue Rear Strut
    SRP Billet Twin Row Carrier
    LSR Axcaliber +2 Axle & LSR Brake Hub

  7. #7
    Join Date
    Jul 2007
    Location
    california
    Posts
    227

    Default

    that and your going to have to special order the muffler bearings. You could try and build them yourself but its alot of work
    "Second place is nothing more than the first loser"


  8. #8

    Arrow

    Quote Originally Posted by lt250racer
    I visited Sweden just over a year ago.
    Beautiful country, & Beautiful vehicles.
    As for the silencer,
    I also have to admit that buying one is the most beneficial choice.
    However if you have a fabrication shop, they could be made.
    Does it have to be Spark Arrested ?
    Nice that You liked our country !
    Welcome back !

    No, it not need to be spark arrested !
    Lasse from SWEDEN.

  9. #9

    Question

    Quote Originally Posted by SkinStroker
    that and your going to have to special order the muffler bearings.
    You could try and build them yourself but its alot of work
    I do not know the word muffler bearings ?
    Lasse from SWEDEN.

  10. #10
    Join Date
    Jul 2004
    Location
    Big Rapids, Michigan
    Posts
    2,332

    Default

    He was implying a joke. All you need is a outer case with a tube traveling though it, but in the tube must have holes all thru it (see pictures). I would reccomend using Aluminum.
    The smaller tube with holes then gets wrapped in a fiberglass cloth.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by lt250racer; 02-08-2008 at 08:31 PM.
    1985 LT250R Quadracer
    Manufacture Date: 12-84
    Hot Rod +8mm Rod, Cometic Alum. Spacer
    FloTek Drag/Dune port w/ Head Mod
    LA Sleeve STD Bore
    Weisco Piston
    AAEN Pipe
    FMF Turbine Core II Universal
    1Dirracing Ported Reed Block w/ Secrets
    Keihin 39mm PWK
    Nology Pro Fire Coil & HotWires
    7oz off FlyWheel
    Barnette Kevilar Clutch Kit
    K&N Cone Filter
    Burgard+2 +1 Chrome A-Arms
    +4 Chromoly Swingarm
    WORKS Fronts w/ Rezzys
    DuraBlue Rear Strut
    SRP Billet Twin Row Carrier
    LSR Axcaliber +2 Axle & LSR Brake Hub