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06-01-2014, 07:20 PM | #1 |
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Join Date: May 2010
Location: Quincy, CA.
Posts: 1,708
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Firestone Spark Plugs
I recently acquired a NOS set of Firestone RL-15 Spark Plugs. There structure is almost identical to the Champion 3X Plug except they do not have the brass top (see attached photos).
I set the gap at .030 and installed them in my Roadster which has a touring engine with a Snyder 5.5 head. The engine runs great and the plug color is fine. Has anyone else used this type of Plug ?Any comments ? Ron Last edited by Ron in Quincy; 10-28-2015 at 08:16 PM. |
06-02-2014, 01:30 PM | #2 |
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Location: Quincy, CA.
Posts: 1,708
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Re: Firestone Spark Plugs
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