When ever I get into boost and shut the car off oil will drip from various seals, each which I have replaced more than once (intake, timing cover seals). I can't figure out how to make it stop. I run a PCV system with the line on the passenger VC run to a water/air seperator then to the inlet side of the turbo. I don't know if I should switch to an exhaust EVAC system or add a breather of some sort to keep the crank case pressure down. Any ideas would be great.

 

Where on the turbo inlet is it pulling in to? I have actually heard of people running lines to the fitting on the compressor housing (which is boost not vacuum). That would pressurize your motor and blow oil!

Just curious, and hopefully I didnt insult you

 

there you go again jon insulting people... j/k

are you running just one pcv line to the catch can or two? what size hose? if its the stock stuff it might not be enough.

 

Haha, no its hooked to the inlet elbow. I don't really get much oil in the seperator, most of it comes out everywhere else.

I'm running the stock "formed" hose to the seperator than I beleive 1/2 from then on. You can see it in this pic.

 

In essence, even with the change in your PCV system, you're still running a "closed system". This works fine when the intake manifold is seeing vacuum, but once the intake becomes pressurized, the PCV system does not work. Additionally, you are creating more crankcase pressure in boost than the motor sees under normal conditions and now the crankcase pressure has no where to go. SO, it starts to push against the seals. If you simply install a breather in the valve cover, it will more than likely just push oil out the breather while in boost and cause an oily mess under your hood. There are several threads regarding this topic going on right mow in this section. Search around a little and you will find there are some good options to correct this situation.

 

We need to create a thread regarding this topic and make it a sticky as well. Anyone know who the current moderator(s) is for this section???

 

Nice looking setup. I actually dont see anything wrong with it since technically, the crankcase venting to the tube (with it going to the suction of the turbo) should see no boost. The boost is getting into the crankcase from somewhere... and it could be by the rings.

You could try just running the valvecover breather to catchcan and not run any line to the turbo. I dont think it will cure your problem though as it should work just like your current setup.

 

Do you think adding a VC breather (or 2) and retaining the current system would help, or would that cause the system to be less effective?

I know you run a similar system, are you running breathers of any sort?

 

All that will do is cause you to pull in outside air thru the filter into the VC and then into the turbo inlet.

My car isnt up and running yet, but there have been 108943782348734819834 threads on ls1tech about this same issue and the typical setups to relieve crank case pressure are:

1. Your current setup

2. Lines from VC to catchcan with a breather on the top of the catch can

3. Lines from VC to catchcan with no breather, line from catchcan to turbo inlet.

Some people use evac systems too. You may try adding a vent line on the driver's side VC and run it to the turbo too.

 

i am running moroso pcv exhaust vent kit...

 

Yeah, oops I thought you were 97WS6Pilot for some reason after reading all the other threads on PCV problems.

This is probably what I'm going to do. Are you running two passenger side VC's or did you just puch a hole in the drivers side?

 

Thats a very nice looking setup you have there. What kinda hot parts are you running? Thats exactly what I want to run on one of my cars.

 

https://www.camaroz28.com/forums/sho...d.php?t=548340

 

I was talking to another member friday night and he mentioned that perhaps the boost in the crank case cant escape fast enough... possibly due to the single line and water/air seperator.

I would try adding a second line on the driver's side VC.

 

My Canton valve covers have two holes on the pass-side, one for oil fill, the other for PCV. I went with the Moroso locking breathers that have a built-in filter, and will be running this line to the turbo inlet. With this Moroso unit, the top comes off and can fill oil there, so I could essentially have two of these on the pass-side cover, then run them together and to the turbo inlet.

Any reason I should put one on both sides, or would both on the pass-side work?