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flatjack9 · 11-17-2019, 12:31 PM

On a set of Offy heads I used spacers with the N5C plug measuring a total of .210 consisting of spacers and a second spark plug gasket.
as noted by Tubman, plug depths will vary from cylinder to cylinder. Quality control is not the best.

11-17-2019, 12:31 PM	#122
flatjack9 Senior Member Join Date: May 2010 Location: Oshkosh, Wi Posts: 4,527	Re: Spark Plug Protrusion into Head? On a set of Offy heads I used spacers with the N5C plug measuring a total of .210 consisting of spacers and a second spark plug gasket. as noted by Tubman, plug depths will vary from cylinder to cylinder. Quality control is not the best.