| Kenneth M. | -- 08-19-2013 @ 8:39 AM |
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Are the spark plugs for the 39 and 40 the same H-10? Kenneth M. Stewart
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| kubes40 | -- 08-19-2013 @ 11:29 AM |
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Yes, 1939 and 1940 utilized the same Champion H10 plug in their passenger cars. Authentically they had two ribs vs. the later and much more common five rib design. Mike "Kube" Kubarth
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| Kenneth M. | -- 08-19-2013 @ 1:58 PM |
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What do you mean by later for 5 rib?Looks like I will half to find a set of 2 ribs for my 39. Kenneth M. Stewart
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| supereal | -- 08-19-2013 @ 2:44 PM |
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I use Champion RJ14YC plugs instead of H-10. They have a longer snout that extends into the combustion area, and burns off deposits.
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| ford38v8 | -- 08-19-2013 @ 3:30 PM |
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Ken, The 2 rib H10 plug Mike refers to was original equipment, used today only for showing on the Concourse, cost about $800 per set, expensive unless you have it point judged, which would be more expensive in lost points for incorrect plugs. The 5 rib H10 was introduced in 1953, it also is harder to find today, being replaced by Champion with H10C plugs, which are still used for some small engines such as gasoline lawn mowers. The H10C plug can be had for $2 each, and despite being knocked by some well respected V8ers, this plug works well for many others, including myself. For looks, you can easily blacken the bright base with a felt marker to appear more original, but wouldn't pass a competent V8 Judge. Alan This message was edited by ford38v8 on 8-19-13 @ 3:39 PM
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| kubes40 | -- 08-19-2013 @ 3:38 PM |
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Ken, The two rib plugs are pictured in the attachment within my initial response to you. The authentic plugs are expensive when found. I recently acquired a set of (8) NOS for $425 and thought that to be a deal. On the concourse, five rib plugs will result in an eight point deduction on any '39 or '40 Ford. The five rib plugs were actually introduced in the midst of WW11. By 1946 - 47 Fords were equipped with the five rib plug. H10 five rib plugs (not H10C) can be had with some frequency for about $20 - $25 a set. Hey Alan, I am with you on the H10's being a good plug. I have heard from numerous folks that the Autolite equivalent performs better. I have no hands on experience with that. I use gun bluing to darken the bases when necessary.
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