Quote:
Originally Posted by Schurkey
Not if there's no air flow through the "baffled" grommets.
Photo(s)?
Kinda guessing this system brings crankcase fumes to the air cleaner (carb vacuum) rather than the intake manifold (manifold vacuum).
If this directs fumes to manifold vacuum, I suppose it relies on a restrictor orifice like some of the LS engines are using in lieu of a PCV valve.
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You do commonly see this setup on modern muscle cars, LS's, Hemi's etc. ecxept for the air/oil seperator, there's not restrictor occurring here. There is an open grommet in the valley pan with a barbed fitting to -8 AN hose connector. This is routed to the draft can, oil is separated there, then recycled to the back of the manifold.
The draft can is closed, so I'm recirculating blow by gasses until there is pressure at which points it will vent the system.
https://www.mightymousesolutions.com...page/draft-can
According to mighty mouse, without the PCV valve installed, this provides enough crank case pressure relieve up to around 800hp. I'm nowhere near that power level, but due to my engine sitting for about 15 years before I got the car on the road, it's ring seal isn't that great and does produce a bit more blow-by.
