Thanks one and all...
My M/E Wagner is set up for 8-inches of vacuum at idle, and about 10 at 2000 rpm.
Here's a pix of my setup. I was still running the back of block vent then. I now have it capped off. Also, this pix is before the carb base plate was installed.
Doug, as you mentioned...is the carb base plate where the PCV hose is connected my biggest problen?
I'm also till thinking about running a catch can. I'd like anyone's thoughts and experience in running a closed system (no breathers on the catch can) vs an open system (with breathers.)
If you ask me after describing the symptoms that you are concerned about, I think that spacer connection is as the "Ghost Busters" might say, "is spook central". LOOK at the way the hose drops down below the oil level in the valve covers with the engine running. That's siphoning oil right there. That hose needs to be elevated.
You can see, even with Earl's post, that we are all dealing with similar situations.
I explained my observations of what my catch cans are doing. I can tell you that on my Audi TT, the catch can to that group is a PITA and is doing the same thing of largely collecting water and some oil droplets. However, the thing is connected differently away from the valve cover possibility of siphoning out oil.
Earl. What started this therapy session for me (working out these types of issues is therapy to me although I just heard a new term referring to me. What does "Bat s hit" mean? Is that good?)
Here's the pictures of my Pantera system. You can see the vacuum plumbing but the collector of those tubes is a fuel log under the heat shielding. More importantly, look at the catch can, plumbed to the valve cover and that runs to the "vacuum log".
I relocated the pcv port into the valve cover also as you might notice?
So here is a IR Weber system with a pcv, so don't say you can't do it.
Webers dump a lot of fuel because of this, "let's mash the throttle" mania that comes over you just because you can.
That eventually does a job on the top compression ring because of the cylinder washing. IF EVER there was an engine that would welcome more piston ring sealing BECAUSE of a pcv system, it's a Weber system like this?
Does it actually work? Maybe?
OH LOOK, you have one just like it? Small world?
These pics are mostly for Earl. You can plumb the Webers for vacuum and then add pcv to that system.
If you don't want to drill the intake, fabricate spacers for under the carbs that you can add a vacuum port to.
Necessity is the mother of invention.