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AaronSEIA 
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Location: Mt Pleasant, IA
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 Topic: D17 Series 2 Muffler?
Posted: 25 Jul 2016 at 6:59pm |
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What should a D17 series 2 have for a muffler? I've seen the skirted style like a WD, and a round clamp style like the cheap farm store replacements. I really need a new one but am not sure which one is correct. By the parts book with a serial number of 33xxx it should be a 70234494. I don't see a diagram for how that muffler attaches to the manifold/tractor.
AaronSEIA
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DSeries4
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Posted: 25 Jul 2016 at 7:07pm |
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The series II uses the cylindrical muffler with a skirt at the bottom with 2 holes in it. AGCO carries them - they are the real Nelson muffler too (for a price).
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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AaronSEIA
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Posted: 25 Jul 2016 at 7:19pm |
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That would be the same as the series 1, but the parts book shows a split at 32,000 and a different muffler but no picture of it.
AaronSEIA
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DrAllis
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Posted: 25 Jul 2016 at 7:37pm |
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Series 2 gas mufflers are round yes, but are LARGER in diameter and have a larger hole in the hood. The mounting method is different too, as I think they had gone to the threaded pipe in the manifold with the larger muffler using a muffler clamp. They were trying to reduce the noise levels of the original Nelson muffler with this change.
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DSeries4
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Posted: 25 Jul 2016 at 7:38pm |
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I think the only different muffler was the oval mufflers that they switched to for the Series III and IV models.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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DSeries4
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Posted: 25 Jul 2016 at 7:42pm |
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Oops, I stand corrected. Dr. Allis would be correct.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Ryan Renko
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Posted: 25 Jul 2016 at 7:50pm |
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I hate to hijack your post Aaron but I have a very similar question. What would be the correct muffler for a Series IV gas?? Thanks guys, Ryan
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AaronSEIA
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Posted: 25 Jul 2016 at 7:52pm |
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Hmm. Not sure my manifold has threads on the inside. What size pipe did they use and what threads would it be?
AaronSEIA
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AaronSEIA
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Posted: 25 Jul 2016 at 7:54pm |
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Series 4 would be the oval one. I think the inlet and outlet were offset.
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DrAllis
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Posted: 25 Jul 2016 at 8:04pm |
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Series 3 and 4 are oval mufflers, again for a quieter running tractor.
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Joe(OH)
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Posted: 25 Jul 2016 at 9:25pm |
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If you find a source for the right one let me know. I'm looking for a good one for my series 2 D-17.
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Life is simpler when you plow around the stump.
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DrAllis
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Posted: 25 Jul 2016 at 9:59pm |
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Correct series 2 gas muffler is 4 inches to 4 1/2 inches in diameter. Old Nelsons were about 3 inches diameter.
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Joe(OH)
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Posted: 25 Jul 2016 at 10:52pm |
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Life is simpler when you plow around the stump.
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79fordblake
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Posted: 26 Jul 2016 at 3:23pm |
Just got this for my WD45 engine im building.  
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DrAllis
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Posted: 26 Jul 2016 at 3:46pm |
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That would be for all WD-45 and early generation D-17's.
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Brian Ahart
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Posted: 26 Jul 2016 at 4:13pm |
The larger diameter straight-through muffler for the D17 Series II (70234494) is still available through Nelson. The Nelson part number is 06923T. Check out seller "nelsonglobalproducts" on eBay. I bought one a few months ago just to have one in stock. http://www.ebay.com/itm/70234494-AGCO-VERTICAL-TRACTOR-Muffler-06923T-by-Nelson-Global-Products-/272256504861?
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ac45dave
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Posted: 27 Jul 2016 at 8:54am |
this gives a good clear side by side dimension comparison between series 1 and series 2. http://www.stanleymuffler.com/catalog/Fall2011.aspx#/6/
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54 wd-45gas ; 56 wd-45d N/F w/fact p/s ; 63 d-17 sIII N/F gas ; 60 D14 N/F ; 67 d-17 sIV N/F gas ; 63D15 sII W/F; 39rc#667 ; 2021 massey 4710 fwa ; gravely 2 wheel tractors
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AaronSEIA
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Posted: 27 Jul 2016 at 10:56am |
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Brian, does that current Nelson muffler have the same Nelson sound everyone is after? I see OK Tractors sells the correct series 2 muffler (or at least dimensionally accurate) and also has some kind of pipe adapter. Looks like it just slides into the manifold as opposed the threading in.
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Brian Ahart
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Posted: 27 Jul 2016 at 10:23pm |
 AaronSEIA wrote:
Brian, does that current Nelson muffler have the same
Nelson sound everyone is after? I see OK Tractors sells the correct
series 2 muffler (or at least dimensionally accurate) and also has some
kind of pipe adapter. Looks like it just slides into the manifold as
opposed the threading in. |
Aaron, I have not installed the muffler, so I cannot testify as to the sound. It does have the perforated interior as with other Nelson units. The input is slotted, with an ID of approximately 1.9 inches and a body diameter of just under 4.5 inches.
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DSeries4
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Posted: 28 Jul 2016 at 9:36pm |
AaronSEIA wrote:
Brian, does that current Nelson muffler have the same Nelson sound everyone is after? I see OK Tractors sells the correct series 2 muffler (or at least dimensionally accurate) and also has some kind of pipe adapter. Looks like it just slides into the manifold as opposed the threading in. |
If it is a Nelson muffler, it would still have that Nelson sound. They were OEM for these tractors.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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