Sodium filled valves???

[50scoot]

Ok, I've seen sodium filled valves on some lower end cars before, some chevy's for instance. I didn't think these engines would have them but you can't be to careful with sodium, its nasty stuff. I know Porsche has used them on certain models because of the air cooling the heads tend to run hotter and the valves are used to shed some of the heat away. I just didn't want them to explode on the machinist or anything lol