Did you expect that the weight of the inlet and outlet valve is close to be identical, even with the inlet valve having a larger head diameter ?
About 80 grams each.
BTW: Valve stem diameter is 8 mm for both valves, which is very solid.
Did you know, that the exhaust valve is made from two different materials ?
Tested it with a ball-shaped magnet.
Head isn’t magnetic, while shaft is.
Magnet sitting at the “border line” between these two materials.
