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Thread: Got my 5 inch silencer mocked up today finially

  1. #1
    Join Date
    May 2010
    Location
    Ripon, Wisconsin, United States
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    861

    Got my 5 inch silencer mocked up today finially

    Put on a extra shock I had with out a spring to check for clearance. The turn down and the inlet pipe were just come scrap pieces I stuck on got the picture. Its 5"x18" I'm always gonna run a gas rack on the back. Hope this solves my problem with noise on the trails.
    Attached Thumbnails Attached Thumbnails 2012-05-19_12-18-52_580.jpg   2012-05-19_12-19-01_837.jpg  
    ]1986 ATC 330R
    1985 ATC 250R vintage PSI racing ported motor
    Get your replacement ATC 250R decals and custom Big Bore #'s here http://shop.3wheelerworld.com/catego...=2&pagegroup=1

  2. #2
    Join Date
    Sep 2011
    Location
    Stevens Point, WI
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    149
    holy cannon batman

  3. #3
    Join Date
    May 2010
    Location
    Ripon, Wisconsin, United States
    --
    861
    The year I got my r's we rode almost 1 day every other weekend 2-4 tanks of fuel each time. Gonna run into a warded sometime. They eat that up! as they told me" 3 wheelers are old and worn out and will never pass a db test so we like to stop and check them" Dicks! As 3/4 of the people that ride by are all over the blood alcohol limit in Wisconsin.
    ]1986 ATC 330R
    1985 ATC 250R vintage PSI racing ported motor
    Get your replacement ATC 250R decals and custom Big Bore #'s here http://shop.3wheelerworld.com/catego...=2&pagegroup=1

  4. #4
    4x4van's Avatar
    4x4van is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jan 2012
    Location
    SoCal
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    157
    Not sure about Wisconsin, but in most states, ATVs don't have to pass the latest db limits, they only have to pass the db limits that were in place when they were manufactured. So diferent year models have different db requirements.

  5. #5
    Join Date
    May 2010
    Location
    Ripon, Wisconsin, United States
    --
    861
    Wisconsin and Michigan are strict in the state of Wisconsin no atv can emit more than 96 db use the sae testing procedure. Its very vague so you have a rattly tool box on a new atv technically you will get a ticket they prob wont bother unless you are revving the piss out of something like a new sportsman 700. Gatta blend in they set up check points all the time and stop everyone our trails are mostly old rail road grades used for snowmobile trails in the winter.
    ]1986 ATC 330R
    1985 ATC 250R vintage PSI racing ported motor
    Get your replacement ATC 250R decals and custom Big Bore #'s here http://shop.3wheelerworld.com/catego...=2&pagegroup=1

  6. #6
    Join Date
    May 2007
    Location
    Orange County, NY !
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    1,672
    Blog Entries
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    How does it sound? What is the design? I wonder how much performance you lose?

  7. #7
    Join Date
    May 2010
    Location
    Ripon, Wisconsin, United States
    --
    861
    I will snap some pictures when i work on it this week. Im sure ill loose some power but in reality a 350xfilter is more than enough power for the trails in wisconsin. I got a 330r now. Im not in compitition so its still got alot of power for me.
    ]1986 ATC 330R
    1985 ATC 250R vintage PSI racing ported motor
    Get your replacement ATC 250R decals and custom Big Bore #'s here http://shop.3wheelerworld.com/catego...=2&pagegroup=1

  8. #8
    Join Date
    May 2010
    Location
    Ripon, Wisconsin, United States
    --
    861
    I found this cut away. Is this gonna be so restrictive it will cause extra heat in the motor? Where would the packing go in this muffler?
    Attached Thumbnails Attached Thumbnails muffler_crosssection_1500-3.jpg  
    ]1986 ATC 330R
    1985 ATC 250R vintage PSI racing ported motor
    Get your replacement ATC 250R decals and custom Big Bore #'s here http://shop.3wheelerworld.com/catego...=2&pagegroup=1

  9. #9
    Join Date
    May 2007
    Location
    Orange County, NY !
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    2
    I am no expert on exhaust system designs, especially for two strokes, but I don't see how a restrictive muffler would cause more heat. It would only slow the motor down, which would leas to less heat? I am looking for a nice quiet muffler that I can run in some places where the power isn't as important to me. I guess you should also check your jetting after you change mufflers, and let us know if there was a required change. That would tell you a lot about the muffler.

    That is a cut away of your muffler? Did you build it, or buy it?

  10. #10
    Join Date
    May 2010
    Location
    Ripon, Wisconsin, United States
    --
    861
    That is a picture I found searching google of a KX muffler
    ]1986 ATC 330R
    1985 ATC 250R vintage PSI racing ported motor
    Get your replacement ATC 250R decals and custom Big Bore #'s here http://shop.3wheelerworld.com/catego...=2&pagegroup=1

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