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Old 12-25-2004, 04:31 PM   #1 (permalink)
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Question Spark plug cross reference.

I have Harley spark plugs in my Ultra now= 6R12.
What would that same plug be in a Champion?
I'm going to buy a dozen of them
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Old 12-25-2004, 05:08 PM   #2 (permalink)
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HDMD88 is reading this now saying WTF is this? HDMD88 is reading this now saying WTF is this?
Quote:
Originally Posted by Markcuda
I have Harley spark plugs in my Ultra now= 6R12.
What would that same plug be in a Champion?
I'm going to buy a dozen of them
Mark, Champion makes HD plugs. The differance between the two are the amount cermic balls under the metal bezzal where the cermic and metal meet. The air cooled plug has less cermic balls in that area letting the plug expand under the higher temp of the air cooled engine. Regular Champoins will work but it doesn't have the life of the HD plug because it can't expand as needed so it cracks the cermic under the bezzal and the plug starts to miss fire.
Now to answer your question....no I don't know the conversion.... :p ...sorry.
I'll bet you will find that the conversion will be a GM car plug, if that helps.
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Old 12-25-2004, 05:16 PM   #3 (permalink)
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Smile

The reason I'm asking for a cross reference is I sprayed WD40 a few days ago on the plug to loosen it up (because it was stuck, would not budge) but the WD40 did the trick. But I also think the WD40 ruined the plug. I can take the front plug, put it in the rear cylinder and take the rear plug ( which is the bad one and put it in the front) and the front cylinder won't fire.

So, here it is Christmas day, I was going to ride the bike a hundred miles, wouldn't you know it a $2.00 fricken item and I ain't got sense enough to have a dozen laying around. So, Sunday I don't think there is too many Harley dealers open but I can find a parts store open. That is the reason I want to get a Champion because its going to be mid 30's Sunday and I don't want a $2.00 fricken spark plug to keep me from riding my bike.
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Old 12-25-2004, 05:19 PM   #4 (permalink)
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HDMD88 is reading this now saying WTF is this? HDMD88 is reading this now saying WTF is this?
Quote:
Originally Posted by Markcuda
The reason I'm asking for a cross reference is I sprayed WD40 a few days ago on the plug to loosen it up (because it was stuck, would not budge) but the WD40 did the trick. But I also think the WD40 ruined the plug. I can take the front plug, put it in the rear cylinder and take the rear plug ( which is the bad one and put it in the front) and the front cylinder won't fire.

So, here it is Christmas day, I was going to ride the bike a hundred miles, wouldn't you know it a $2.00 fricken item and I ain't got sense enough to have a dozen laying around. So, Sunday I don't think there is too many Harley dealers open but I can find a parts store open. That is the reason I want to get a Champion because its going to be mid 30's Sunday and I don't want a $2.00 fricken spark plug to keep me from riding my bike.
You are a trip Mark.....take the plug in with you and match up the nose and the electrobes, that should be close enough to ride a few miles in 30 degree weather....... :p
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Old 12-25-2004, 05:26 PM   #5 (permalink)
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Smile

I did some digging and Champion says I need a "RA8HC" That should be easy to find I hope the parts counter guy can get me two of these till Monday I ain't been on the bike since Tuesday
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Old 12-25-2004, 08:02 PM   #6 (permalink)
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Just in case they're out of Champions here's some other options - don't want to see you go any longer with out riding

Cross Reference
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Old 12-25-2004, 08:21 PM   #7 (permalink)
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Cool

JW, thank you so very much I have been on that web site before, I think I got there through some other web site thou.
That will definately get me riding, I hope.
Now, if only the parts store has them
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Old 12-25-2004, 10:05 PM   #8 (permalink)
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Wink

At walmart in the auto section I found champ. spark plugs I think the p/n was 8610-1 their about $2.95 you'll find a book to cross the p/n at the plug section. hope this helps.
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Old 12-25-2004, 10:09 PM   #9 (permalink)
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Around here in these parts most of the Indy wrenches use the Autolite 4162. I'm not a FoMoCo fan but thats what I've always run without any problems.
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Old 12-25-2004, 10:20 PM   #10 (permalink)
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Farm@Fleet opens at 9:00 am, I will be the first biker through there door
I have never paniced so much over two little items like I am now
Mid 30s on Sunday :p Now you see why
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Old 12-25-2004, 10:47 PM   #11 (permalink)
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Mark, RA8HC is the correct one. I've been running them for the last year or so. They come gapped way less than .040 though, so you have to bend the ground strap at kind of an extreme angle. They work fine.
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Old 12-25-2004, 10:53 PM   #12 (permalink)
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Unhappy

Thank you all very much
Get this, as I type this, it is snowing(roads are covered) I may get the plugs but not get to ride, oh well.
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Old 12-25-2004, 11:55 PM   #13 (permalink)
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http://www.nightrider.com/biketech/hdsparkplugs01.htm
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Old 12-30-2004, 12:01 AM   #14 (permalink)
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Quote:
Originally Posted by 2kflhr
Around here in these parts most of the Indy wrenches use the Autolite 4162. I'm not a FoMoCo fan but thats what I've always run without any problems.

Why the Autolite 4162 vrs the 4164? I take it that the 4162 is a hotter plug. But why go with a hotter plug? The 4164 seems to work fine for me.

Just asking.

Correction: I should have said, that the 4164 is a hotter plug than the 4162. What was I thinkin????? Thanks Ed

Thanks

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Last edited by DMC; 12-30-2004 at 01:11 PM.
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Old 12-30-2004, 12:31 AM   #15 (permalink)
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4164 is the standard Autolite replacement plug for TC. 4162 is 2 ranges colder.

Autolite is NOT a FoMoCo company anymore.
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