PCV valve - install into the intake?

[Cantedvalve 128]

Kicking this idea around. On my intake, I have a large open area between runners 4 and 8. My PCV hose connects to the back of the carburetor.  What if I put the valve itself into the intake in that open area?  With the appropriate baffle on the underside. Would be a cleaner look than running it to the valve cover. What you guys think?  Any downfalls you see?

[Ridge Runner 1,112]

It would not remove crank pressure ,it would be working backwards,un less you mean it will be going into the crank case ?

[barnett468 418]

It will work the same except it will be exposed to a lot more oil even with a baffl;e, so you might also need to add an oil catch can.

[barnett468 418]

8 hours ago, Ridge Runner said:

It would not remove crank pressure ,it would be working backwards,un less you mean it will be going into the crank case ?

He means into the intake valley between the intake runners, not in the intake runners.

[JayEstes 172]

I have a few random thoughts:  

1. I'm not sure how similar the pressures and airflow are inside the intake -vs- inside the valve cover.  If different at all it might affect the performance of the PCV.  There's obviously a lot more fuel in the intake than in the valve covers.
2. Will exposure to ethanol in the gas ruin the PCV?  
3. If the PCV vents, will you smell the gas?
4. Surely a statement of the obvious: You would have to drill the intake off the engine, otherwise - metal shards in the engine.

IDK.  Seems like a big change.  I've not seen it done, but not saying it can't be done.

[1969_Mach1 333]

Just leave the PCV in the valve cover.

[Rsanter 152]

What engine?

early small blocks and even FE engines has their PVC located there. They used a mesh basket as an oil trap.

there is not much oil splashing in the lifter valley.

if you have a baffle and some kind of oil trap you will be fine

[barnett468 418]

7 hours ago, JayEstes said:

1. I'm not sure how similar the pressures and airflow are inside the intake -vs- inside the valve cover.  

The pressure is identical.

[Cantedvalve 128]

It’s not a now thing. Maybe next winter.

[stangman69 17]

Researching my own eventual installation of a PCV valve...probably going to use the adjustable one.

The Fox Mustangs had it mounted at the back of the intake with a line running out to a valve cover.  I planned to put an adjustable valve in that spot, and run the intake line to either (or even both) valve covers with a catch can in between possibly if oil pickup seems like a problem.

[barnett468 418]

2 hours ago, stangman69 said:

Researching my own eventual installation of a PCV valve...probably going to use the adjustable one.

These are mostly useful on carbureted engines that have cams that are bigger than stock.