Home › Forum › Ask A Member › RPH Welch Plugs? › Reply To: RPH Welch Plugs?
January 15, 2019 at 8:10 pm
#163771
The cylinder block was dipped in the corrosion inhibitor before being machined. Since the crankcase is not submerged in water (hopefully), no need for the coating. The two are then mated and final machining done.