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woodiewagon46 · 02-13-2018, 03:46 PM

Since you are dealing with a flat surface under the plug base, I would try McMaster Carr. Listed under "Low Carbon Steel Round Shims", are a variety of ID dimensions and thickness of .0005 and up. Stack them up and get the electrode where you want it.

02-13-2018, 03:46 PM	#7
woodiewagon46 Senior Member Join Date: Jun 2012 Location: Long Island,NY Posts: 1,554	Re: Indexing Spark Plugs Since you are dealing with a flat surface under the plug base, I would try McMaster Carr. Listed under "Low Carbon Steel Round Shims", are a variety of ID dimensions and thickness of .0005 and up. Stack them up and get the electrode where you want it.