Edelbrock Air-Gap PCV Baffle

When you reinstalled did you cut holes threw the valley pan for your line or did you do under?  Im having same issue..  But I hoping installing a torker with the proper OIL Baffle will solve it..  MY RPM has a small baffle designed by Edelbrock  Do not know if it was first RPM intake generation or after...  

Thanks

I'm performing thread necromancy to add my version of a separator for this manifold.

I'd solved the issue of oil getting into the intake by installing a Mann & Hummel ProVent, but since 2+ oz of oil was getting in the ProVent during autocrosses, I figured I'd try to fix that if I ever had to pull the manifold.  A lifter issue reared its head, so the manifold had to come off.

This is the Edelbrock-supplied louvered plate which comes with the manifold.  The reason for including this pic is to point out where I've run a yellow line across the plate.  Note that on the left side of the pic where the plate is below the yellow line, there's a bit of a shadow.  This is because the machining was not flat in this area, leaving an 0.050" step where the yellow line is, causing a gap between the manifold and the plate.

I leveled off the area with a large file...

... then bent up a baffle/box to hold some stainless scrubber material.  To ensure the vapors/droplets don't have a "shortcut," I epoxied the corners and will use some sealer between the box and manifold, then lay a bead of silicone on the "ramps" of the removable lid and in the vee between the box and manifold.  As Greyhounds_AMX did with his baffle, this has drip edges, plus a couple of drip points on the lid.

WesternRed wrote: Some nicely engineered solutions there, about the only observation I’d make is the factory baffle pan is quite large, which would help to slow the air velocity down.

Thanks.  Your observation is valid, but the shape & size of the area available back there with the Air-Gap won't allow anything close to the combined volume of the factory baffle & PCV "plenum." I could have extended the box further and/or angled the forward side to match the bathtub of the manifold,  but didn't want to try a more complicated shape. 

In any event, the perimeter gap at the inlet "lid" is 0.420 sq in, which is probably at least 8x the cross-sectional area of the Edelbrock plate's four small louvers, and the 20 1/4" holes in the box total 0.982 in sq.  A 3/8" hose has a 0.110 sq in cross-sectional area, so the velocities through the perimeter gap and holes will be ~4x and ~9x slower than the hose, respectively.  I might add some holes to the lid, as none of this is permanently installed yet.

WesternRed wrote: For competition use, I’d be inclined to ditch the PCV and run a catch can off the valve covers, well that’s what I’ve done anyway.

For competition use, sure.  My car sees mainly street use.