[ThePeoplesCamaro]

Ok someone please educate me. My end game intent is to clean up the mess of hoses for the pcv system. I’m reading that some can be capped off with just a tiny filter cap. Which one exactly. What I would like to do with the rest is use flexible 3/8 hose so that I can route and tie the lines in a more attractive manner. Especially since I’ll be running a LT2 manifold with cover. The plastic unmovable lines just look ugly and out of place. How doable is this? Can the one going to the intake tube be deleted. Will the required lines being longer effective their performance? Etc. I need some schooling lol

[Jaxcam02]

My advice would be too not touch any of it. It's a tricky game to play and can have unintended consequences of bad engine performance of you screw something up.

If you are dead on intent to do this, you need to read and research the PCV system and know every little aspect of it's operation.

[Spaceme1117]

I agree with Jaxcam02, unless you research the PCV system and know exactly what you are doing, best not to mess with it.

You could end up causing a ton of problems.

[95 imp]

It's really not complicated.

Back in the old days, you had a "road draft tube" that vented the CC at idle and created a slight vacuum cruising. (Bernoulli Principle)

As emission controls started to be added, the "closed loop" or "Positive Crankcase Ventilation" system was used to help prevent HC emissions.

The way it works is under high manifold vacuum it sucks fresh air from the intake tract
(hose to the intake tube) that will go to the crankcase.

The other side has a spring loaded "metering" valve. Again, when manifold vacuum is high enough, it sucks open the valve and the fresh air/unburnt HC, etc. go into the manifold to be reburned.

If there isn't enough vacuum (WOT), the valve shuts and the air rushing thru the intake
creates the vacuum (Bernoulli Principle) and the flow reverses. (There is no fresh air going into the CC during WOT. It is under vacuum only)

[Jaxcam02]

Originally Posted by 95 imp

It's really not complicated.

Back in the old days, you had a "road draft tube" that vented the CC at idle and created a slight vacuum cruising. (Bernoulli Principle)

As emission controls started to be added, the "closed loop" or "Positive Crankcase Ventilation" system was used to help prevent HC emissions.

The way it works is under high manifold vacuum it sucks fresh air from the intake tract
(hose to the intake tube) that will go to the crankcase.

The other side has a spring loaded "metering" valve. Again, when manifold vacuum is high enough, it sucks open the valve and the fresh air/unburnt HC, etc. go into the manifold to be reburned.

If there isn't enough vacuum (WOT), the valve shuts and the air rushing thru the intake
creates the vacuum (Bernoulli Principle) and the flow reverses. (There is no fresh air going into the CC during WOT. It is under vacuum only)

Yea the principle is easy to understand. But if he's looking in the engine bay and doesn't know which hose does what, then he shouldn't be touching anything. A full understanding of the hose routings and air flow should be achieved before altering anything. It's too easy to allow unmetered air into the system or have vacuum leaks.

[95 imp]

Not if you do one at a time...

[ThePeoplesCamaro]

Where can I find a write up of what each hose does to learn. I understand the line my catch can go to. Replace the short line on the driver side of the engine with the in and out of the catch can. To easy. It’s the lines from the valve covers that connect to the little plastic box on the passenger side of the engine that’s third connection attaches to the intake that has me stumped.

[Jaxcam02]

That little component your talking about is the clean side oil separator. I haven't dug too much into the LT1 PCV, but I would assume the two lines coming from the valve covers flow from the oil separator into the valve covers. I think the line in the middle comes from the intake. There's a drain in the bottom that allows the oil to seep back into the oil pan.

[Hotwheeltat]

It's really not that big a deal. I just ordered a bunch of various fittings and hose from Mighty Mouse when I ordered my catch can. The hose routing for the PCV and fuel line are horrible. Rerouted the PCV lines and added the strut tower brace to block the view of the fuel line.

[ThePeoplesCamaro]

Originally Posted by Hotwheeltat

It's really not that big a deal. I just ordered a bunch of various fittings and hose from Mighty Mouse when I ordered my catch can. The hose routing for the PCV and fuel line are horrible. Rerouted the PCV lines and added the strut tower brace to block the view of the fuel line.

Nice. Exactly what I’ll be accomplishing.
Of course now I have another issue. A buddy was being an extra hand during a oil change and leaned on one of the lines. Broke the nipple on the factory clean side oil separator........ seems like I can attempt a plastic weld repair because I’m not about to pull a water pump for a emissions ventilation system. Lmao

[Hotwheeltat]

Thank you. Good luck on your repair.

[ThePeoplesCamaro]

Well guys I did it. Did my research figured out it would cause no issues. And damn does it look good.

[Jaxcam02]

Nice job. Glad you got it the way you wanted

[mrkyleman]

Looks great! Where did you get your parts from if you don't mind me asking?