Edison plugs

O

old car guy

Senior Member
I just found 4 new in the box and loose Edison number 13 spark plugs. Are these correct for a model t ford. I can not find out any application for them so far. Thanks for any or all help
 
Are they 1/2 inch tapered pipe thread or straight thread? The Model T used the 1st as did a number of other cars and motors of the era. If they are straight thread what size? A photo would be of some help.
MarkG
 
Thanks for your reply here hope fully is a picture of the plugs
 

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Model T plugs have tapered bases (which is what 1/2 inch pipe thread would be) like the ones in the photo. They look to be correct for Model T. They are a double fire after market item. Nice find.
MarkG
 
Thanks to those who responded. Can any one tell me what they are worth. I do not want to give them away, but I certainly do not want to over charge anyone for them either. Thanks again
 
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