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Bored&Stroked · 11-06-2019, 07:35 PM

Me - if I had a set of the Offy heads, I would spot-face the gasket surface down whatever is required so that I could run 1/2" reach plugs. Depending on the type of electrode, the other approach might be to put a 45 degree chamfer on the combustion chamber side - which would allow a more projected nose plug.

Lots of ways to skin this cat . . . and most of them quite doable on a good drill-press. Then just chase the threads when finished.

No biggie boys, no biggie . . . LOL

11-06-2019, 07:35 PM	#53
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,067	Re: Spark Plug Protrusion into Head? Me - if I had a set of the Offy heads, I would spot-face the gasket surface down whatever is required so that I could run 1/2" reach plugs. Depending on the type of electrode, the other approach might be to put a 45 degree chamfer on the combustion chamber side - which would allow a more projected nose plug. Lots of ways to skin this cat . . . and most of them quite doable on a good drill-press. Then just chase the threads when finished. No biggie boys, no biggie . . . LOL