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WC spark plugs
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Mark.Kuehn View Drop Down
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Joined: 20 Oct 2024
Location: NW Wisconsin
Points: 7 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark.Kuehn Quote  Post ReplyReply Direct Link To This Post Topic: WC spark plugs
    Posted: 28 Oct 2024 at 5:16pm
I'm attempting to find modern replacements for AN7 or AC45 plugs.

I read that Champion J8C is possibly an equivalent and so is NGK CS3. Is this true, and what have others used successfully?

If the plug is a match for depth (length), diameter, and thread is there a risk of using an equivalent plug?


Edited by Mark.Kuehn - 28 Oct 2024 at 5:41pm
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JoeM(GA) View Drop Down
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Joined: 12 Sep 2009
Location: Cumming,GA
Points: 4658 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeM(GA) Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2024 at 5:32pm
I run Autolite 295’s in my WC
Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB
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PaulB View Drop Down
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 4740 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2024 at 6:12pm
The NGK equivalent for an AC45 is a B6S non resistor, if you want a resistor plug use a BR6S.
 Back in the 70s I quit using Champion plugs for anything. In a box of 10 you could be sure 2 were bad, it was up to you to find those 2.
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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Steve in NJ View Drop Down
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11816 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 28 Oct 2024 at 6:47pm
Autolites or NGK's are usually the strong picks for AC Tractors. Autolite 295's are a warmer plug. The other Autolite choice that can be used is the 303. These are a little colder plug. Worn engines or engines that have some time on them where oil control may be a little bit of a problem, the 295's work great. The NGK B6S work great also. The choice is yours...
Steve@B&B
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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Alberta Phil View Drop Down
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Joined: 13 Sep 2009
Location: Alberta, Canada
Points: 3774 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Alberta Phil Quote  Post ReplyReply Direct Link To This Post Posted: 29 Oct 2024 at 10:33am
Your WC should have a magneto unless it's been replaced with a distributor.  Magnetos don't like resistor plugs or carbon core wires!
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