Case breather for a carb'd engine: Do they fail?

[Air_Cooled_Nut]

Are the case breather boxes for the carburated engine just a fancy flow-through box? Like, how do you know if one is good or bad?

Pictures of what I'm talking about:
See the image in BusDaddy's post:
http://www.thesamba.com/vw/forum/viewtopic.php?t=4...highlight=

Better picture of a solid top (no funnel):
http://www.thesamba.com/vw/classifieds/detail.php?id=752343
_________________
Toby http://www.aircoolednut.com/
Did I mention that I'm an original Darksider?
'72 VW Squareback, 2007cc, GB 5-speed, rag top; '76 VW Riviera Penthouse Sundowner 2.0L; 2015 Audi S5 Cabby w/Stage II APR; '06 Ducati Sport Classic 1000; '14 Ducati Diavel Strada
The First Invasion

[germansupplyscott]

pretty sure the carbed breathers are just a baffle, all metal inside.
_________________
SL

[Rubber Duck]

Mine is exactly as pictured. Nothing in it to fail. Just a box with a large hose nipple, to which (on standard unmolested fuel systems) is connected back to the air cleaner.

In my twin weber setup, the nipple is connected to a hose that's road-drafted. Mine is special in that it serves as the only way for me to get engine oil into the engine!
_________________
---------
Rubber Duck
1974 Westfalia