| std1940 | -- 01-28-2012 @ 2:19 PM |
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Did the original H-10 champion spark plugs that came from the factory in new 1940 cars have Ford printed on them? I have 10 NOS H-9 #01T-12405 that have Ford on them. I have compared them to some original H-10's I have and the only physical is that the porcelain neck of the H-9's are longer.I am thinking of making them into H-10's if the Original H-10's came with Ford on them? What are your ideas on this? Thanks Tom.
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| kubes40 | -- 01-28-2012 @ 3:09 PM |
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Tom, It remains ambiguous whether or not our '40 Fords came with "FORD" (block lettered) H-10 spark plugs from the factory or those were service replacement plugs. I have sets of both - some with the "FORD" and others without. During my research, I have yet to come upon anything that is definitive one way or the other. Nor am I aware of anyone else that has any proof that would lead us to answer this with confidence.
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| supereal | -- 01-28-2012 @ 3:10 PM |
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The length of the porcelain neck on the plug is related to the "heat" rating. The longer the neck, the cooler the plug. I prefer to use Champion RJ14YC plugs instead of the H-10's. They tend to foul less. I don't show my cars, so being "correct" is less important.
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