Guess I missed that post cause you called it make it four you have now seen broke off.
Yikes. Nasty.
Wondering too what rockers all the guys are using that have had the issue. Is that a rub/wear mark on the left flange? Or just the light?
Not the biggest engine guy, why or why not would I need the baffles?
A few reasons. But all have to do with making a mess.
If it's just the oil fill side, with no baffle oil will leak out of the filler in pretty quick order. If it's a filter type cap, it's a real mess!
If there is no baffle on the PCV valve side, the engine vacuum just sucks the daylights out of the oil mist and two things happen. You have a real mess inside the intake manifold (and everywhere it leaks out of the vacuum hose fittings), and you need to add oil every 1000 miles or so.
Neither of which is much fun.
There's a ton of oil (both liquid and mist) whipping around under the valve cover when the engine is running and hot.
How does that even break off? Vibration?
Was wondering the same thing. But yeah, those mounting tabs are not very substantial. And the vibrations inside an engine are substantial. Not to mention the heating and cooling cycles that cheap metals can't handle as much of.
But rocker interference could definitely be a cause as well. Changes the whole dynamic.
Paul