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Yes, it's another valve cover vent port, the line should run down into the main air intake tube. You can cap the line with a breather filter and close off the inlet on the main air intake to avoid oily pcv residue building up in your intercooler w/o throwing a code.
When the PCV valve is open, it’s a fresh air source for the crankcase. When the PCV valve is closed (high manifold vacuum), it’s effectively a vent outward.
The system goes back to at least the sixties; my van has one. The breather is the oil cap, and there’s a line from the PCV valve to the carb.
Yes, it's another valve cover vent port, the line should run down into the main air intake tube. You can cap the line with a breather filter and close off the inlet on the main air intake to avoid oily pcv residue building up in your intercooler w/o throwing a code.
interesting. what does the "breather filter" look like
I remember someone running a cylindrical filter like you’d put on a small block, though it may have been smaller than one of those.
Yep. I had added a small cone type filter on that breather outlet and posted a picture of it here on NAM, after installing my Catch can.
I was kindly informed by a credible contributor here, that the Supercharged Mini engine is a and intended as a 'closed system' and furthermore a filter on that outlet only defeats its engineering and is not recommended.
I removed the filter and ran the hose back to original/stock.
