Vented Valve Cover

[armenh7]

Hey guys, I am going to copy his catch can setup. Using a M56 aluminum valve cover, the stock CCV parts are gutted from the inside and a metal cap is welded onto where the membrane is. Are there any issues you guys see with this setup? Won't I need some sort of PCV valve to regulate the vacuum? Everything from the stock CCV is removed and the intake manifold is tapped and plugged where the stock air distribution piece used to sit. I've seen a lot of Honda's run this setup but don't know what they do for the vacuum regulation
https://drive.google.com/open?id=1ri...4reNI3NEPLIIgr

[Hova]

Sure that would work. I would make sure the hole you drill is above a baffle so it's not just going to be blowing oil out. You'll obviously get oil mist, but that's what the catch can is for.

I like the idea. AN-10 or AN-12 fitting would do quite well here.

A lot of the boosted LSx people run a similar system to this, and even run a breather on their oil cap.

A diy version would be:
https://www.youtube.com/watch?v=oYNm3EN9K1c

If you want to blow the money, Vargas makes a great design:

https://www.ecstuning.com/b-vargas-t...-crank-breath/

I run one on my N54 along with a catch can.

[armenh7]

Sure that would work. I would make sure the hole you drill is above a baffle so it's not just going to be blowing oil out. You'll obviously get oil mist, but that's what the catch can is for.

I like the idea. AN-10 or AN-12 fitting would do quite well here.

A lot of the boosted LSx people run a similar system to this, and even run a breather on their oil cap.

A diy version would be:
https://www.youtube.com/watch?v=oYNm3EN9K1c

If you want to blow the money, Vargas makes a great design:

https://www.ecstuning.com/b-vargas-t...-crank-breath/

I run one on my N54 along with a catch can.

Thanks for the reply! Yes, I will be keeping in mind to drill above a baffle to prevent oil from splashing out. I don't need any sort of vacuum regulation?

[Hova]

Thanks for the reply! Yes, I will be keeping in mind to drill above a baffle to prevent oil from splashing out. I don't need any sort of vacuum regulation?

Just add a PCV valve somewhere in the line. So air can leave the crankcase, but not come in.

Something like this;
https://www.turnermotorsport.com/p-5...2-check-valve/


It would be wise to take out that baffle, so you can make that hole, and also clean out any debris.

[armenh7]

Just add a PCV valve somewhere in the line. So air can leave the crankcase, but not come in.

It would be wise to take out that baffle, so you can make that hole, and also clean out any debris.

Without it, it would be seen as a vacuum leak, correct? Something like this https://www.amazon.com/FV345-Positiv.../dp/B000C31K72

[Hova]

Without it, it would be seen as a vacuum leak, correct? Something like this https://www.amazon.com/FV345-Positiv.../dp/B000C31K72

Correct.

[armenh7]

Correct.

In the picture, it actually looks quite restrictive. It seems as if that would eliminate the purpose of having such a big vent. The person I got the idea from isn't running one and his car is fine so far. Should I just not run it unless I get issues?

[Hova]

In the picture, it actually looks quite restrictive. It seems as if that would eliminate the purpose of having such a big vent. The person I got the idea from isn't running one and his car is fine so far. Should I just not run it unless I get issues?

You could, sure. Just be aware that you'll have a huge vacuum leak.
How much blowby are you expecting to happen? Usually people run one catch can and call it a day. One catch can, plus a vented cap, etc. would be enough for a lot of blowby.

[armenh7]

You could, sure. Just be aware that you'll have a huge vacuum leak.
How much blowby are you expecting to happen? Usually people run one catch can and call it a day. One catch can, plus a vented cap, etc. would be enough for a lot of blowby.

Just one catch can with two -12AN ports on the catch can and valve cover.
By the way, I really appreciate you commenting on the post. I also posted in the Boosted E36 facebook group and many people are running the same setup without a check valve and they say it's been working great. Any reason they aren't having issues?

[Hova]

Just one catch can with two -12AN ports on the catch can and valve cover.
By the way, I really appreciate you commenting on the post. I also posted in the Boosted E36 facebook group and many people are running the same setup without a check valve and they say it's been working great. Any reason they aren't having issues?

You can run it without a check valve, but really the correct way for a street car is to have a one way valve. Try it without a one way valve, no harm in trying it.

[armenh7]

You can run it without a check valve, but really the correct way for a street car is to have a one way valve. Try it without a one way valve, no harm in trying it.

I will try it out and see what happens.
I just thought of something - if I were to run that valve, will I be putting it right under where the breather filter will sit? If that's the case, I might be able to find a valve that isn't restrictive such as this http://www.eliteengineeringusa.com/elite-engineerings-one-way-check-valves/

I just saw your post #4 and the link to that check valve. The one I linked looks familiar. Sorry that I missed it. I bet that check valve would work good

I might go with this (http://www.uprproducts.com/billet-check-valve.html#1) as it has a cracking pressure of 0psi so it shouldn't be restrictive.

[armenh7]

I had to zoom out a lot so it's a little hard to read but they''re saying since there's no vacuum in the crankcase, air won't be sucked back in through the vent in the catch can https://ibb.co/PCB9Y4V