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Spark Plug Seals (washers) yes or no?
https://slantsix.org/forum/viewtopic.php?t=58176
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Author:  notpaul [ Tue Aug 04, 2015 10:13 am ]
Post subject:  Spark Plug Seals (washers) yes or no?

Hey, all!

I had to put a different L6 in my '76 Duster ... I am told it is a 1963.

I read that between '63 and '74 you are NOT supposed to use the washers on your spark plugs ... is there a definitive way to know FOR CERTAIN whether or not I need these washers?

Please PM. Thanks!

Author:  SlantSixDan [ Tue Aug 04, 2015 11:42 am ]
Post subject: 

Asked in public, answered in public: Do not use the metal ring washer gaskets on spark plugs in any '63-'74 model year cylinder head. Use them only in '60-'62 heads. See here.

Also, tune-up parts and technique suggestions (including spark plugs) are in this thread.

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