They used to sell push-in and screw-in breathers for Chebbys that had the PCV in the top, and the guts stuffed with a nylon mesh to act as a vapor separator.
I had a PCV problem once. Running a Rally-Cross, with the tranny in 2nd gear,and
the engine at 5000/7000 most of the way, but sawing on the gas pedal. But it went away by itself,afterwards,lol.
I manufactured more and better baffleage and it never happened again. I pump more oil to the top than most guys, so all that aluminum up there gets protection, and for cooling, and for a long engine life;100,000 plus miles now and counting.
If you make your own baffles, you have to provide an escape path for the oil, cuz there will be a ton of it in the mesh; it has to be able to escape.
However, I still agree with all the guys who are pointing to other sources. Consider where the oil is piling up, when going down hill. It normally runs along the head and drains down at the back. Not so when going down hill. It all piles up at the front and if the front valve seals are compromised, it will immediately show up. If enough time goes by, the oil will back up to the pushrod tunnels and escape down into the valley and then down to meet the crank, which will beat the snot out of it, creating a ton of additional windage. Then your whole engine will fill up with that slimey storm, and the PCV was never designed to deal with that.
So, before you drive yourself crazy,messing with the PCV, consider that.
Put the PCV back where it belongs. Time the downhill run until it starts belching smoke and note the vacuum reading in the PCV line. Then run it long enough to empty the muffler. Then repeat the test on flat ground. You may have to begin the test from a higher speed to get the vacuum to come up.
