PCV questions

[93AWDDSM]

You must be logged in to view this image or video.

Do I need to cap the hose from the intake manifold and run the pcv line to a catch can and then recirculate from the breather on the VC?

I’ve done this and wondering if it’s acceptable. I’ve extended the hose off the Intake manifold and installed a check valve and then connected it to a hose and routed to the PCV on the valve cover.
—also the breather line has a small inline filter to catch any oil debris.

You must be logged in to view this image or video.

 

[Vegas Smith]

That's what I've done to mine. I have the vc exit going to my catch can and then the catchcan going to my intake pipe for vacuum.

 

[1990TSIAWDTALON]

The second picture is correct. Run the "breather" line to your catch can inlet and put the filter on the catch can outlet.

 

[93AWDDSM]

I don’t have a catch can. As of right now mine is set up as picture #2. The breather isn’t going to a can and it’s not getting vacuum supply. Is it necessary to have the vacuum?
I have a dejon 1g Intake pipe so no extra sources for vacuum on that. I’ll be switching to a stock 2g intake tube soon.

I’ve got bigger fish to fry then this but would I need to get this type of can and reroute in the future?

You must be logged in to view this image or video.

 

[Vegas Smith]

You don't have to have a vacuum source but it's the "best" way. The vacuum pulls air/vapor whatever out of the catch can and engine so that the piston rings seal better. You wouldn't want to run that line directly to your intake because it will also pull oil and that stuff will eventually coat your intercooler. Back in the day, a big free mod was cleaning your stock intercooler with gas to get rid of all that smut that developed over a decade. Also, you can drill and tap a nipple into your intake pipe very easily.

 

[talon77]

I would recommend running that line to a vacuum supply. I'm sure people get away with not doing so, but I wouldn't risk insufficient crankcase ventilation under boost by not running that line to vacuum, that's my opinion.

 

[93AWDDSM]

You must be logged in to view this image or video.

I’m just confused as all hell .

 

[Vegas Smith]

^^That picture is what my setup looks like, so I don't think you're confused.

 

[93AWDDSM]

OK great. Guess I’ll look forward to putting something like this together!

Thanks everyone.

 

[2gmitsueclipse]

You can even add a second catch can for the VC to IM line. Try to stick to a sealed catch can instead of a vented one.

 

[93AWDDSM]

You must be logged in to view this image or video.

OK well not sure of the difference but I was going to put this one on my checklist of stuff to buy to help preserve the engine. (Don’t care so much for the color or “racing” description )

 

[chrysler kid]

It has to be a sealed unit

The problem isnt the pcv hose, it is the valve cover breather hose. Air is discharged from the valve cover in boost situations, and it is also a suction point at idle.

To make it more confusing for you, you technically should have 2 catch cans on the breather hose with 2 check valves.

Honestly its not worth worrying about. I just use clear hoses for my breather hose. Hardly any oil is expelled because of the baffling in the valve cover.