I have a 01 Z06 with a 383 stroker (for now) moter that doesn’t have a pcv system and I would like to install one. When I bought the car it didn't have one installed. Right now I’m just using a breather on the left head on the passenger side. I installed an oil catch can as I been getting lots of oil in the intake manifold and inside of the breather. Also small amounts of oil will shoot out of the breather under heavy acceleration. Oil consumption is a also a major problem as it will consume about a quart of oil every 500 miles or so.

Does anyone have a diagram of some sort of all the parts needed for a full install? Does this seem like a crank case issue? Would installing a pcv system help?

 

What line is the catch can installed in at this time?

 

Well I found where the stock pcv tubing is routed




It's routed through the bottom intake and the valve cover connected through a T with a line leading to the oil catch can. The right rocker arm cover and throttle body covers are both sealed off. (Off topic), is the reason the air pump line going to the air filter is not being used because it's also deleted when you delete the pcv system? I took some pictures so you could see what I was talking about. Oil catch can is toward the front.

I did a search http://forums.corvetteforum.com/show....php?t=1732900 and it's kind of confusing as there’s not a real definite answer if a pcv system should be used or not. Some do and some don't. I just don't want to make the same mistakes with my new set up. I took some pictures so you could see what I was talking about. Oil catch can is toward the front.

 

You will get a lot of differing opinions on this topic and I am not sure that there is a best solution. I am still trying to decide what to do with my PCV system. Where does your catch can route back to, the discharge side?

 

Whats a PVC system.

 

So are you saying there is only one line on the catch can?

From the photos is looks like there is an open breather on the RH valve cover (oil fill cap). The two lines that go to the catch can are coming off the valley cover nipple (the normal PCV vacuum line) and the fresh air line that is on the RH valve cover.

Without more info or photos, I'd say there is no vacuum on the crankcase, which is something you don't want to do. You need the intake manifold vacuum on the crankcase so it can "wash out" the crap in the crankcase with some positive air flow.

 

Just purchased a catch can and installing this weekend. Quick question. Where did you get that breather cap? Been looking for one and can't find one.

 

Click here to learn more http://home.sprynet.com/~dale02/vac-pcv.htm

Yes their as an open breather on the RH valve cover. The PCV hole from the right rocker arm cover is pluged up,

As you can see in the above picture the PCV pipe from the right rocker arm nipple (just below the intake) is connected to the right fresh air line that is connected by a T leading to the oil catch can then the second line coming off the oil catch can leads to nothing just a line sitting out towards the bottom of the motor. I drew a crappy photo shop of how the lines go lol. The pvc hole on the intake is plugged up.





The line from the PCV tube from the right rocker arm cover and intake manifold has been blocked off all together. So what I need to do is reinstall the PCV valve to the valve pipe, right rocker arm cover, left rocker arm cover and install the PCV tube to the right rocker arm cover and intake manifold. The right rocker arm cover hole should be opened up and connected to the closed intake hole correct? But should the oil catch can line leading out to the bottom motor be connected to nothing? I drew another great picture lol. Is this how it should be connected?


You don't want the one that I have. You can tell it's not really made for the vette and doesn't fit in the oil filling hole real tight. I plan on getting this one or one like it for my new build up http://www.pfyc.com/pc/GN3020/VTUNDE...er+Filter.html

 

lccobra -- by looking at your latest photos, the setup you have has zero vacuum line on the crankcase, which means there is nothing pulling the crap out of you engine. Take off your breather cap and look at the underside and inside the valve cover and see if crud is starting to collect there.

The plugged hole on the intake manifold behind the throttle body is the point where the vacuum is applied to the PCV system.

I'll bet your catch can never catches any oil because there is really nothing to draw much vapor through it. The catch can setup on your car is basically another open breather with very restricted flow lines.

In your figure below, it shows the factory PCV setup for an LS1. The line that goes from the valve cover nipple to the throttle body is the "fresh air line". The two lines (one from each rear end of both valve covers) and come together in a Y on the RH side and then go to the PCV valve is the dirty vapor line. The dirty vapor line then connects to the intake manifold. It's all shown, minus you're black lines drawn in the figure.

 

I have LS6 Heads so i'm pretty sure my car is set up for the LS6 Pcv system. Also their is no second nipple on the top left hand coner rh. I'm really confused because from my understanding i'm suposed to have another nipple coming off the intake throttle body. As you can tell from the pictures I don't even have one. I'm useing the Nick Williams 90mm throttle body with LS6 heads.

 

Yes, that figure showing the 1997 to 2003 LS1 would be the stock PCV system with a catch can put in the dirty vapor line.

The green (#7) item is the piece you show in the other photo in your post below. It sucks the dirty vapors from the back/top of each valve cover, then comes to a "Y" before going to the PCV valve. The catch can does between the PCV valve and the intake manifold as the sketch shows.

The gray line (#8) is the fresh air makeup line, and it goes between the front RH valve cover nipple to the throttle body nipple. Since you have an aftermarket intake manifold and throttle body (?), I'm not sure if there is a fresh air nipple on our intake tract somewhere or not.

Anyway, that figure pretty much shows the OEM LS1 setup with a catch can installed.

 

I have it narrowed down and know through your help which way to route everything . But I reedited my post because I now believe my set-up is currently using the LS6 pcv system. But what do I do about not having a nipple on the Nick Williams throttle body?

 

Yes, the photo you posted above is the LS6 PCV setup, so if there is a hose nipple coming off the RH front corner of the valley cover then someone has installed an LS6 valley cover on your LS1, which is probably plugged on the hose nipple on your car.

As far as the fresh air line ... I think some guys have put a hose fitting in the intake hose just before the throttle body to connect the OEM hose from the RH front valve cover. Another option is to just keep using the open breather on the valve cover and just hook the catch can up in the dirty vapor line. If you are going to do some track time with this car, I would recommend retaining the open breather setup, as lots of WOT use will tend to backflow dirty vapors & possibly oil down the fresh air line to the TB.