New Sealed Power Nissan 300ZX intake valve coating remove?
New Sealed Power Nissan 300ZX intake valve coating remove?
(OP)
Should I grind the intake valve faces and remove the black coating or just instal them as is. I chucked them in the grinder and they show no runnout with a last word indicator (0 to 0.001") and the finish is visually smooth using a 500x surface comparator.





RE: New Sealed Power Nissan 300ZX intake valve coating remove?
Rod