PCV valves

oldskoolchuk

On my car I, at the original turbo install, they deleted the pcv valve on the passenger's side to make room for the pipes and it lead to some nasty problems. In order to put a pcv valve back in I had to machine up a low profile elbow fitting to sneak out the pcv line in the limited space, and now I use an inline pcv valve that is 3/8" hose barb to 3/8" hosebarb.... problem is the one I used was a PoS and cracked in half after a single season of limited usage.

Does anyone else also use one of these pcv valves who has found a higher quality valve?

Also, perhaps it's just too restrictive of a valve so it doesn't last. I can't really find anything to educate me on how they're rated for flow, nor on how to select a proper valve. Perhaps someone could lead me down the right path here.

I attached a picture of the elbow fitting for the curious. I actually had to again modify it by milling off the hose barb, drilling and tapping it with a pipe thread; then I machined a fitting with a pipe thread and a hose barb that then threaded into the elbow block to get her installed. Machinist for the win.

Attached Images

20210710_184116.jpg (636.6 KB, 9 views)

THE BULL

Ive never opened an OEM pCV before however the OEM brake booster hose has a 3/8s plastic check valve pellet that goes inside of the hose.

I tend to use this pellet on engine swaps that ask for a small booster hose the pellet does wonders and could help out for the PCV.

Now being that you are boosted I'd suggest to do away with the factory routing. The factory routing will be pushing total boost psi into the check valve which is possibly the reason why they crapped out.

For a boosted setup the ideal setup is one that maintains a vacuum source but not from the intake manifold ( reason why is the strain of the valve)

Many folks end up gutting the PCV valve and route a hollow valve and hose to the inlet of the turbo/SC. Doing it this way will keep the crankcase flowing.

If you plan on using the turbo/sc feed to suck these gasses you wont need a PCV. You can put filters on your breathers and route the PCV hoses to the turbo intake. You can put a catch can in between to filter these gasses so you wont burn them.