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GMS 120

Old 03-11-2010, 12:28 PM
  #1  
rcluver
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Default GMS 120

Hey all, I have a GMS 120 that I have in the nose of a Four Star 120, problem is that I have no muffler. Tower says late July. I can get a Pitts muffler for it, but the motor is mounted upright. My queston is, does anyone know if another muffler will work, or if there is a replacement muffler for this engine? I had a Tower .76 muffler laying around, and it fits the 120 with no problems, bolt holes line up and everything. Will this muffler be too restrictive for the 120? Or will it work. I have not run this engine yet, so I don't know if the .76 muffler will cause problems, don't want to damage anything. Any help appreciated. I hope someone with more engine knowledge than I have will know. Thanks.
Old 03-11-2010, 03:06 PM
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big max 1935
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Default RE: GMS 120

Too bad you missed it . I just got one off eBay for $22.00 mailed to me. I bought it for a Webra 1.20 ,it bolted right on . Max H.
Old 03-11-2010, 06:37 PM
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jimmyjames213
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Default RE: GMS 120


ORIGINAL: rcluver

Hey all, I have a GMS 120 that I have in the nose of a Four Star 120, problem is that I have no muffler. Tower says late July. I can get a Pitts muffler for it, but the motor is mounted upright. My queston is, does anyone know if another muffler will work, or if there is a replacement muffler for this engine? I had a Tower .76 muffler laying around, and it fits the 120 with no problems, bolt holes line up and everything. Will this muffler be too restrictive for the 120? Or will it work. I have not run this engine yet, so I don't know if the .76 muffler will cause problems, don't want to damage anything. Any help appreciated. I hope someone with more engine knowledge than I have will know. Thanks.
it wont hurt it it may just be down on power, how much idk
Old 03-11-2010, 06:40 PM
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p100d
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Default RE: GMS 120

I wouldn't hesitate trying but understand your reservations. The 1.20 size muffler is about 1" longer than the .76. But the exiting hole is the same size. So I don't think it would be any big deal.

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