GB SISSON Well-known member Mar 27, 2016 #21 cmbrucew said: Cast iron plugs expand and retract at the same rate as the cast iron block. Copper or brass does not.. Bruce Happy Easter to you all. Click to expand... Good point! Hadn't thought about that aspect.
cmbrucew said: Cast iron plugs expand and retract at the same rate as the cast iron block. Copper or brass does not.. Bruce Happy Easter to you all. Click to expand... Good point! Hadn't thought about that aspect.
