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Nick m 
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Joined: 14 Nov 2016
Location: Michigan
Points: 56
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 Topic: Wd45 spark plug confusion
Posted: 13 Mar 2018 at 4:46pm |
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I read a couple places autolite 295's are a good plug for these. It has champion rj12yc in it. The champions don't cross to the autolites. Look to be the same overall length and thread size, but definitely different from the hex down. Probably over thinking again but that's me. This is the one I just bought that's been sitting for 15ish years.
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dawntreader74
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Joined: 28 Oct 2013
Location: Manteno
Points: 1770
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Posted: 13 Mar 2018 at 5:12pm |
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had best luck with AC-45 or 46' them other plugs are not hot . them lawn mower plugs with cold spark don't work very good in the old tractors if your working it.
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Bill_MN
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Joined: 12 Sep 2009
Location: Sioux Falls, SD
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Posted: 13 Mar 2018 at 5:32pm |
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Forget about those Champions and just put some Autolite 303's in.
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1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow
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Rltool
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Joined: 17 Jun 2013
Location: Middleville ,MI
Points: 1822
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Posted: 13 Mar 2018 at 6:02pm |
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I’ve had pretty good luck with the Autolite 295 plugs.
I don’t work them that hard either.
Ray W.
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MACK
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Joined: 17 Nov 2009
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Posted: 13 Mar 2018 at 10:05pm |
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Any thing is better than champion. MACK
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dawntreader74
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Location: Manteno
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Posted: 13 Mar 2018 at 11:14pm |
mack ;; you hit it right on the head 
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Sugarmaker
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Joined: 12 Jul 2013
Location: Albion PA
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Posted: 14 Mar 2018 at 1:01pm |
I also use the 295's and they preform well. I also do not like Champions. I guess its like a Ford or Chevy thing? I drive Fords!:) Regards, Chris
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D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet.
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mdm1
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Location: Onalaska, WI
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Posted: 14 Mar 2018 at 4:22pm |
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I just put a set of NGK B-4 in my B haven't used it much yet. I have 295's in the others.
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Everything is impossible until someone does it! WD45-trip loader 1947 c w/woods belly mower, 1939 B, #3 sickle mower 1944 B, 2 1948 G's. Misc other equipment that my wife calls JUNK!
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Gerald J.
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Location: Hamilton Co, IA
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Posted: 14 Mar 2018 at 8:59pm |
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For at least a quarter century Champion tractor pugs have been junk. Their choice of ceramic is bad. When it gets a bit of carbon it from full choke starting it doesn't clean from running normally hot and the carbon really hurts the spark and the engine running. Its not Ford vs Chevy, it is simply an inferior product.
Gerald J.
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old farmer
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Joined: 12 Oct 2011
Location: Sturgis, Mich
Points: 341
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Posted: 14 Mar 2018 at 9:06pm |
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Champions have been a problem as far back as late 50s. Uncles disliked them.
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Sugarmaker
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Location: Albion PA
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Posted: 15 Mar 2018 at 9:41am |
I think my dad must have had stock in Champion plugs. Thats all he ever used in the Allis WD series and the B. He would buy them a dozen at a time and go through them like water. J-8 is still stuck in my mind! Regards, Chris
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D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet.
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alan-nj
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Posted: 15 Mar 2018 at 10:01am |
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Bought a CA 18 years ago that had Champions. Finally changed them last year. Worked well for the 17 years I used them........but I haven't ever bought any more Champions. I was using Autolite, but have switched to NGK
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If ignorance is bliss, than happy days are here again.
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
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Posted: 15 Mar 2018 at 10:17am |
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Autolite 295's are the hotter plug. 303's are the colder plug. When our customer's ask me about what plugs to use, I tell them either Autolite's or NGK's seem to work quite well in AC Tractor engines. In worn not rebuilt engines, the hotter 295's work quite well. In newer engines or freshly rebuilt engines, the 303's work great, especially with a Battery ignition. Anything with a Mag, the hotter plugs (295) work great. The NGK B6 works great also...
Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Butch(OH)
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Location: Lucerne Ohio
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Posted: 15 Mar 2018 at 11:09am |
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Go to Ebay, punch in AC45 and buy some of the old stock AC45 that abound there. Be careful as there are now reproductions AC45 sold there too. Never heard bad (or good) about the repros buy why take the chance. No they are not $1.50 a piece but if you watch you can get them for $3-4 by the box full. If your head has been changed and you need long reach the number is 45XL and they are much cheaper than 45 to boot.
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Butch(OH)
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Location: Lucerne Ohio
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Posted: 15 Mar 2018 at 11:14am |
 Butch(OH) wrote:
Go to Ebay, punch in AC45 and buy some of the old stock AC45 that abound there. Be careful as there are now reproductions AC45 sold there too. Never heard bad (or good) about the repros buy why take the chance. No they are not $1.50 a piece but if you watch you can get them for $3-4 by the box full. If your head has been changed and you need long reach the number is 45XL and they are much cheaper than 45 to boot.
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Like these https://www.ebay.com/itm/8-Vintage-GM-AC-45-Fire-Ring-Spark-Plugs-J396/282848977777?epid=658263563&hash=item41db1ce371:g:UewAAOSwG1NahPjU&vxp=mtr
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ac45dave
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Joined: 23 May 2015
Location: SE(IN)
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Posted: 15 Mar 2018 at 12:16pm |
That's the cheapest I'v seen those in a good while,good buy.They would be mine if I was't already stocked up. 
Edited by ac45dave - 15 Mar 2018 at 12:23pm
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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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