a small air leak at a crank seal or an intake gasket will cause the usually perfect fuel air mixture in the crankcase to become slightly lean sometimes very lean this lean mixture can quickly result in a seized piston air leaks are by far the number one cause of vintage engine piston seizures
Lugs are the electrical connectors that terminate the electrical circuit. Lugs are made of copper, aluminum, or bronze. They are made for the smallest wire size, 26 gauge to the largest 2000 MCM. Lugs can be mechanical or set screw; compression or crimp, solder or weld; or clamp type.
Wire is made from a wire-drawing process, where the thicker material is pulled through rollers of different sizes. copper, and/or gold. those are the two best electricity current thingies. i forgot. but they are the two most effeicient i'm sure of it. copper is used the most though. Made out of metal through wire drawing machine. Generally electrical wires are copper because it has very good electrical conductivity. The wiring in some american houses form the 70s are aluminium because of the high price of copper at the time.