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Is AC 45S the same plug as the K-11? Champion J12 ?
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They are not the same,what are you trying to find plugs for?
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Joined: Jan 2002
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ChatMaster - 25,000
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The AC45 would be a better plug than the 45S. S indicates extended tip.
Gene Schneider
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Typo. I did order R45. Could not find the non resistor. But I will have the radio hooked up next week. So it may help that.
Thx.
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Joined: Jan 2002
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ChatMaster - 25,000
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I ran AC R45 in my'34 with good results. No condensers etc. were installed and had no ignition noises.
Gene Schneider
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Joined: Aug 2008
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Backyard Mechanic
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Backyard Mechanic
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I have some K-11 plugs if you need them.
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Joined: Aug 2008
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Backyard Mechanic
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Backyard Mechanic
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Shade Tree Mechanic
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Shade Tree Mechanic
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I also have a '35 Std with the 207 engine. I have been running the AC 45S plugs in it for a long time with excellent results. They are only recommended for overhead valve engines; with the extended tip they will be a problem in a flathead; No misfires at all, and the center porcelain is always a light tan color. The other plugs mentioned should be OK, but my experience with the 45S has been very positive. I wouldn't hesitate about using them again, if I can find them!
flip
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Joined: Jan 2002
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ChatMaster - 25,000
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The extended tip (S) plug used to burn holes in the top of the pistons on the 1953 and up aluminum piston engines.
Gene Schneider
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Joined: Aug 2008
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Backyard Mechanic
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Backyard Mechanic
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Joined: Aug 2008
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Backyard Mechanic
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Backyard Mechanic
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Joe, I posted a photo of the K11 plugs in the gallery section.
I also have a few K9 and K10
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Shade Tree Mechanic
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Shade Tree Mechanic
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Thanks for to heads-up! That may be why I have not had a problem; my engine still has the cast iron pistons! Phil
flip
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