The official FABO machinist/member collaboration, busted 340 thread

New lifters don't have to cut the mustard, they just have to open the valves... :rolleyes:
Yep they open the valves for sure, then (in more instances than we'd like to see) as time passes they wear the cam lobes, valves don't open as much, fine metal particles circulate "everywhere" and all sorts of fun begins.