The Ford Barn

guam2250 · 01-24-2022, 06:07 PM

Evening all. Can anyone ID this Model A spark plug chart? It has a#17 at the bottom corner, so it was part of a book? Some of the info is in conflict with judging standards, such as the "3" in the 3X plugs has a flat top, not rounded. There is a 3X , dated 1-29 to 11-30, with the knurling different than the standards. Curious where this came from and accuracy issues.

rotorwrench · 01-24-2022, 06:50 PM

It came from a MARC newsletter. Here is a link.
https://www.fordbarn.com/forum/showt...2931&showall=1

Mike Peters · 01-24-2022, 06:53 PM

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It's signed by Ed Eaton and dated 1986. If memory serves, Ed Eaton was involved with the Judging Standards committee back on the 1980's. Perhaps someone else can shed more light on this??

01-24-2022, 06:50 PM	#2
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,410	Re: Model A spark plug chart identification It came from a MARC newsletter. Here is a link. https://www.fordbarn.com/forum/showt...2931&showall=1

01-24-2022, 06:53 PM	#3
Mike Peters Senior Member Join Date: Aug 2012 Location: South East Wisconsin Posts: 1,283	Re: Model A spark plug chart identification Sponsored Links (Register now to hide all advertisements) It's signed by Ed Eaton and dated 1986. If memory serves, Ed Eaton was involved with the Judging Standards committee back on the 1980's. Perhaps someone else can shed more light on this??