2000

I F you're venting the crankcase with a breather on the oil filler neck do you need fresh air coming in from somewhere??

fsvaasam

If i understood your question correctly, no you dont need any other ventilation if your filler neck is breathing to enginebay.

2000

I was wondering if I needed fresh air going into the engine from the valve cover on the driver side as the passenger side is venting.

fsvaasam

Im in a middle of same kind of modification here. Im planing to keep stock like venting from driver side to passanger valvecover and venting only on filler neck. If you dont have to worry any emissions or so, it will work. My only worry is if i get any fumes to cabin. i dont think so.

2000

I didn't smell any fumes in the cab of my car. I have only driven it twice since I had a breather on though.

fsvaasam

If your goal is not having oil to intake, you have acieved it.

99Bluz28

iTrader: (35)

For your engine to be getting fresh air from the breather filter there needs to be a vacuum source to pull air in through it, and through the engine. Otherwise your breather filter is only a filtered crankcase pressure vent.

fsvaasam

Does this engine need any other ventilation?

Paul Bell

iTrader: (9)

The easiest way to do this is having filtered air on one valve cover and the other valve cover hose to a PCV valve then to engine vacuum.

This pretty much describes the way the factory did it. Original LS1 factory PCV system isn't great and fails quickly. Many have upgraded to the LS6 system. Adding a catch can makes it even better.

This will help you: http://www.ls1howto.com/index.php?article=18

And for us to help you better, tell us what vehicle this is: https://ls1tech.com/forums/generatio...g-threads.html

2000

2000 camaro ls1. Deleted the AIR and EGR. Installed a typhoon intake. Now just having trouble getting the right crankcase venting going. So far I just have a breather on the oil filler neck. Thanks.

peedot36

For a 2004 GTO, only mods are ported 5.3l heads, possibly a cam, (not sure), and catback flowmasters.

I am thinking of venting the crank and adding a catch can as follows:

1. Install catch can from Valley to throttle body.
2. Vent crank from DS VC to breather and inline oil/air seperator.
3. Cap PS VC nipple and the spot of the throttle body where it connects.
4. Install breather at filler neck.

Any porblems here for my particular setup?

VandykeT/A

When I deleted my pcv I completely removed all the lines from the car and put a Metco breather in place of the cap and on the driver side I took a pcv valve and cut the bottom off of it and took the guts out so that it was hollow and bought one of the 3/8 clamp on breathers (spectre) from autozone and clamped it to the pcv and stuck it in the grommet. Wouldn't running a breather and a pcv valve be a small vacuum leak.

Zach-R

I'm running a oil cap breather from hawks third gen and a k&n 3/8 breather on drivers side. No Pcv and all other ports capped. It's a 98.

2000

How long have you been running like that? Any problems with that setup?

99Bluz28

iTrader: (35)

I hope you do frequent oil changes.

99Bluz28

iTrader: (35)

FYI. just so every is clear on this, if you cap everything off and install a breather filter you do NOT have ventilation, only a vent. They (vent, ventilation) are not the same . If you want ventilation then you need the vacuum pull from hooking up a line from either the a LS6 valley cover port or a valve cover port to the vacuum port on the passenger side of the intake manifold.

99Bluz28

iTrader: (35)

This is what I suggest.
Mighty Mouse, PCV Can
http://www.ws6project.com/user_stor/...oducts_id=6352

1989GTA

"The easiest way to do this is having filtered air on one valve cover and the other valve cover hose to a PCV valve then to engine vacuum."

This.^^^^ You need filtered air on one valve cover. It can be from a small filter installed on the oil cap or as the factory did and have it take off from the air intake track between the air filter and the throttle body.

The other cover needs to go to a point behind the throttle body. On my car the oil cap and the point for the factory filtered air is just about at the same location so I left the factory PCV system hooked up and added the oil cap filter. I have a stroker motor and I am interested in bleeding pressure off if the crankcase goes positive.

MIGHTYMOUSE

iTrader: (59)

thanks 99bluz28.

Yes my can comes with a new boost proof pcv valve on the outlet side so flow to the can from the engine is unrestricted, and of course any extra pressure is free to leave the breather valve at can top, so it is not just one mod but 3. catch can / pcv relocation / crank pressure relief.

these are in stock at the above ws6store.com link