✅ SOLVED Old spark plug.

[Desert Don]

I have so many odd things that I have found over the years. In time, maybe the forum can help to identify some of them. For now, here is one. I know this is an old spark plug. I've been told that it was from an old Ford Model A or Model T. It is just a guess. I found it some months ago, before I joined this forum. It appears from the screw top that is can be rebuilt. I found it 10 inches down with the metal detector in the middle of the old 20 Mule Team road leading out of Mojave California. The road was used by freight wagons from 1883 to 1889 to transport Borax ore to the rail head in Mojave. After that, it was used for many years as a trail to other mining towns along the way. I do metal detecting on the trail a lot. It is my favorite place to go around here. I continue to find old nuts and bolts, washers and other items that probable fell off some early wagons or automobiles. Most of it is just junk, but every now and then I get a surprise. This plug was a pleasant surprise. There are no marking or numbers on it at all. The nut on top appears to be brass. Under that is what appears to be green colored porcelain or glass.

It would nice to know the name of this plug, and the year it was manufactured

.

 

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[villagenut]

Looks like a valve used for single supply water line like in a shower.

 

[Sallysue]

Looks like a valve used for single supply water line like in a shower.

I agree if we could see the end of it we would know for sure

 

[cudamark]

Yes, we need to see a better photo of the electrode end. Just from this one photo, it could also be a glow plug or maybe even a temp sensor.

 

[villagenut]

It does look like I see an electrode at the left end, so a few more pics would help nail it down for sure

 

[Tony in SC]

It's a Splitdorf three piece sparkplug. Most had a 1/2" pipe thread. Without looking it up I think they came out about 1906 or so. The Champion No. 25 also a three piece came out about the same time. They could be taken apart and cleaned. They were used in some hit&miss engines and later cars. Tony

 

[jewelerguy]

looks like this Splitdorf spark plug. Model T vintage, so it would date to the late 1910's The Donaldsonville Automobiles The Donaldsonville Auto Co.

 

[CTwoods]

It's a Splitdorf three piece sparkplug. Most had a 1/2" pipe thread. Without looking it up I think they came out about 1906 or so. The Champion No. 25 also a three piece came out about the same time. They could be taken apart and cleaned. They were used in some hit&miss engines and later cars. Tony

looks like this Splitdorf spark plug. Model T vintage, so it would date to the late 1910's The Donaldsonville Automobiles The Donaldsonville Auto Co.

If you note the extended "longer reach" part, below the end of the threads? That extension determines which engine it will fit correctly. I don't have a T plug here, but the reach looks about right. T's needed the certain length, as the head casting was very thick at the plug hole. That's a really nice looking plug for a collector, with green and the hex shaped insulator...very nice find IMO

 

[Desert Don]

Yes, we need to see a better photo of the electrode end. Just from this one photo, it could also be a glow plug or maybe even a temp sensor.

Here are a couple of better photos of the end. This thing is definitely a spark plug. click on the photo for a larger view.

 

[Desert Don]

It's a Splitdorf three piece sparkplug. Most had a 1/2" pipe thread. Without looking it up I think they came out about 1906 or so. The Champion No. 25 also a three piece came out about the same time. They could be taken apart and cleaned. They were used in some hit&miss engines and later cars. Tony

Wow...you guys are good. I saw the photo on the web page at The Donaldsonville Automobiles The Donaldsonville Auto Co. That's my plug. After I posted this, I used a magnifying glass to look closer at the green part. Sure enough, I can just barely make out the name "Spitsdorf". I did not see that before. Thanks to all.

Desert Don

 

[Anduril]

Just sayin'...

I'm blown away by how quickly and accurately some "widgets" are identified on this forum!
Nice job guys.

This "what-it?" forum is a nice break from the monotony sometimes.

 

[Desert Don]

I agree with Anduril. Very impressive! I don't wish to sell this plug, but does anyone know what it is worth?

DD

 

[Tony in SC]

Good condition, in the box, about $50/70, or so. I do the antique engine and tractor show circuit and see a these from time to time. Tony

I agree with Anduril. Very impressive! I don't wish to sell this plug, but does anyone know what it is worth?

DD