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11-16-2020, 08:16 PM | #1 |
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Location: Lincoln, Nebraska
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Numbers on C-4 spark plugs
I've started working on cleaning up some C-4 spark plugs. After taking several of them apart I've noticed that there are numbers towards the bases of the porcelain that are hidden when they are assembled. Most have a number but some do not.
Any idea as to what the numbers represent?
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Dave / Lincoln Nebraska |
11-17-2020, 01:19 AM | #2 |
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Location: Oregon
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Re: Numbers on C-4 spark plugs
Pre bar code
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11-17-2020, 12:02 PM | #3 |
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Re: Numbers on C-4 spark plugs
I would guess some sort of production code.
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If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
11-18-2020, 06:57 PM | #4 |
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Re: Numbers on C-4 spark plugs
A mystery that may never be solved.
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Dave / Lincoln Nebraska |
11-18-2020, 09:32 PM | #5 |
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Re: Numbers on C-4 spark plugs
Probably which machine made the part, if there was a problem they would want to know where it was coming from.
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11-19-2020, 11:34 AM | #6 |
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Re: Numbers on C-4 spark plugs
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If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
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