Spark Plug Information

Started by mvair, February 03, 2007, 02:12:17 PM

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JimCno

That's because someone (I believe it's Champion) currently makes an A7 spark plug that is made for lawnmower engines. They are not the same as the original A7s for our beasts.
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12905

What variety of idiots do you deal with? There are plenty of 6-cyl. engines (V and inline) out there that still use conventional plugs. Many of these are considered "current". What would they say if you told them you have a 5 cylinder?
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Ed_Ungerman

When ever I buy plugs for my car, they want to know what size lawn mower I have that takes 6 plugs.   :D
We will be remembered by the tracks we leave behind.

1937 Plymouth Business Coupe
2005 Dodge Hemi Magnum
2000 Dodge Dakota 5.9 R/T
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mvair

#6
Quote from: mvair on February 03, 2007, 02:12:17 PM
Was the Autolite A7 sparkplug original equipment on a '41 engine?? If not, what was original? If yes, are the plugs still available? If yes, where (I have looked at NAPA.). If no, what is the correct replacement for a show car?

Thanks!!

The orginal question is repeated above.? This is strictly a question for those interested in making the car as close to original as possible.? Replacement plugs are readily available everywhere for a couple of bucks each.
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JimCno

I'm not sure what the question is. Do you just want a spark plug that will fit and make the car run? If that is the case, you can get them at NAPA or any of the big box stores. Or is is a matter of having a spark plug that will have the same number and logo as an original one for the purpose of scoring points for a show?
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mvair

#4
I checked with "Mr. Spark Plug" and got the following information...

The original spark plug on a '41 was the Autolite A7.? There was also a heavy duty Autolite AT8 that probably was not original from the factory but was available.

The A7 was produced with a star printed on the plug and without the star.? The earlier version (and the one probably original in 1941) did not have the star.

When Ford Motor Company sold Autolite to Fram in the early '70's they were required to change the numbering system on the plugs.? The replacement A7 is still available today, but with a different number.

The original A7 plug is available from "Mr. Spark Plug" for $12.50 with the star and $15.00 without the star.

This is all according to Mr. Spark Plug!! The contact address below is correct but the H in the PO Box is just to let Mr. Spark Plug know if the address was copied from his Hemmings ad.? There is no H in the actual address.

Thanks for the lead to this resource.
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mvair

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johnRFain29U

Write Donald McKinsey, PO Box 94H, Wilkinson, IN? 46186.? Known by some as ?Mr. Spark Plug?, he only uses snail mail.? He is an expert on antique spark plugs and can tell you what plugs were original equipment for your car.? Send him $2 for his catalog.
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mvair

Was the Autolite A7 sparkplug original equipment on a '41 engine?  If not, what was original? If yes, are the plugs still available? If yes, where (I have looked at NAPA.). If no, what is the correct replacement for a show car?

Thanks!!
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