The Stovebolt Site Forums The Shop Area Engine Shop PCV valve location: Air Flow Direction

I've been thinking about PCV installation since Denny's thread on how wives react to how trucks perfume a garage after shut down.

If an air filter could be fit into the draft tube, a PCV valve could be mounted to the rocker cover (preferably over the oil transfer fitting to minimize exposure to splashing.) I think that many engines in the 1970's had PCVs in the rocker cover.

This would allow for a shorter PCV tube run and a less intrusive installation - it might look more original.

Any thoughts on pulling the air through the engine "backwards"?

Just wondering aloud.

Bill

I had the same thought and went as far as finding parts.

Oil Cap

Spectre - Oil Breather Cap

Haven't check to see if that oil cap will fit yet.

I'd be interested to hear thoughts on this as well

If you have a 216, you will have several vents in the valve cover to deal with. I will bet that the valve cover vents are the biggest, if not the sole source of the lovely smell, which I enjoy as much as Hoppes Gun cleaner, and the smell directly extracted from freshly shot ammunition brass.
Carl

A friend of mine bought a 51 willys wagon and when he got it home he noticed a tuna can hanging from the draft tube with wires with screws mounted to the draft tube and tuna can. He said the owner did not like the small oil/condensation drops on his concrete but said nothing about the smell. I told him to check to make sure he did not put a carbon filter in the tube.

Here's a good article. Draft Tube Upgrage

...A few years later PCV was standard on the 261 and optional across the line on the 235. I wonder if the earlier Heavy Trucks of your vintage might have been equipped or could be optioned with PCV, which would mean Factory Parts are out there?