05-11-2010, 01:54 PM
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#1
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Senior Member
Join Date: May 2010
Location: Windy City
Posts: 2,919
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Radioactive Spark Plugs!
I picked these up (carefully with gloves!  ) at a swap. 7/8 thread, they fit a Model A.
...........Anybody ever use them? .........Any idea as to the heat range?
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