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AnthonyG · 11-02-2019, 02:04 PM

Gary (GOFAST), not sure exactly what ur asking but here’s all the geometry. The most end feature of the plug is .308-315”to the head’s gasket surface, the same plug feature is .370-.377” to the slight recessed area of the ignition chamber it protrudes into. I count 3.5 female threads in the head to the first engagement of the plug male thread. Hope that gives u what u were asking? My question is still “is the protrusion OK”? If u see the color of the porcelain in the ignition area of the plug the color ain’t bad!? What do u think? Wasnt planning on pulling other head as the issue I thought I had w compression only effected cyl. #2. But if the Geometry is wrong & that critical on this side I will?

11-02-2019, 02:04 PM	#5
AnthonyG Senior Member Join Date: May 2013 Location: Pa. Posts: 2,166	Re: Spark Plug Protrusion into Head? Gary (GOFAST), not sure exactly what ur asking but here’s all the geometry. The most end feature of the plug is .308-315”to the head’s gasket surface, the same plug feature is .370-.377” to the slight recessed area of the ignition chamber it protrudes into. I count 3.5 female threads in the head to the first engagement of the plug male thread. Hope that gives u what u were asking? My question is still “is the protrusion OK”? If u see the color of the porcelain in the ignition area of the plug the color ain’t bad!? What do u think? Wasnt planning on pulling other head as the issue I thought I had w compression only effected cyl. #2. But if the Geometry is wrong & that critical on this side I will? __________________ Nomad