You cant take 2 minutes of your time and snap a pic of the inside of you intake manifold? Your car would be the 1st that I have seen with a bone dry intake manifold, and I don't see how that is possible with a motor setup for a 300+ shot like yours is. And report this thread for what? Your the only one doing the name calling.

 

The amount of WOT runs, or using the car exclusively for racing maybe a major consideration on the issue of oil being pushed up the PCV system fresh air tube and ingested into the intake.

My new stroker engine had that problem and I do a lot of bracket racing. For example; I bracket race almost every weekend. I make two to three timing passes and if I’m lucky, I may go as-may-as five or more rounds in the eliminations. So, I can have as-may-as eight or more WOT passes on my engine in one day!

Conversely, people who go to the track “occasionally” to test-n-tune and maybe do two or three runs “are not” placing anyway near the stress and usage on their engine that I am.

Additionally, I believe at WOT the PCV vacuum is “greatly reduced.” Therefore crankcase ventilation with the OEM PCV system is minimal and crankcase pressure will increase. And, that is the reason race engines typically have crankcase breathers, or another system to ventilate the crankcase. However, I don’t see race engines using an OEM type PCV system to ventilate the crankcase!

WD

 

I wasnt being sarcastic. Why did you bold that, it was a statement of saying how well your car runs. I dont come on here often, and dont appreciate being titled as something I am not. No matter how much you are on here, your level of experience etc is irrelevant. I did not come across as a sarcastic individual.
In regards to the LSx engines in my question. I am wondeirng what the difference is on there PCV valve? WHat did the engineers find within the PCV valve to help reduce oil consumption. FWIW.

 

The new Gen III PCV valve that was released recently has a small hole in it to reduce on consumption.

http://www.ls1tech.com/forums/showth...&highlight=PCV

 

I took it as sarcasm, too. FWIW.

 

Okay, I am no English major or a Keyboard Commando trying to **** off people.
It was a statement of how well his engine runs, and we can learn from his expertise/build up to better our engines.
I learned from just the low tension rings, as it is not good for the street. My first engine in over thirty years where I listened to the builder, instead of what I knew was right, just to gain a couple extra HP.
NE ways, not sarcasm.

 

Actually the engineers for the LS1 engines from 1997 to '02 found a way for the PCV system to consume even more oil than its predecessor. Some LS1 engines had horrible consumption problems due to what some report is a bad placement of the PCV valve which is located in the valve cover. The fix is to get a LS6 oil valley cover which then places the PCV valve in the oil valley.

 

That helps with the pcv valve, but still doesnt stop oil from getting in the intake, and there is still the fresh air hose that lets oil get in the intake. The way I have my car setup shouldn't let ANY oil in the intake, atleast I hope not. 2 breathers, a catch can inline with the pcv valve and a husky water seperator after the catch can to make sure the catch can catches everything. so far the air/water seperator is still bone dry so I'll probably take that off and just run the catch can.

 

On yours I understand the logic. The air tube on the passenger side is able to flow both ways. And I could see it getting oil vapor into the throttle body with enough suction from the throttle body. But it goes from the throttle body to the valve cover , correct.? I guess in reality, to reduce the oil blow by, consumption etc, you just have to have a correctly built engine, with someone really having the knowledge of how the whole package works.

 

Actually it helps reduce or eliminate oil vapors getting into the intake. It does not just soley help out with the PCV valve. I was addressing this question:

 

No wonder your pcv system doesn't work. Have you ever heard of pressure loss? It works with vacuum just as well as it does with boost. Increase volume in a line too much and you loose vacuum.

 

Um not really. There is no restriction in the lines so it sucks in just as much air if there wasn't a catch can.

 

Put a pressure drop gauge on it and watch how much there is. IIRC each catch can is ~3kpa drop. Husky water separators are significantly higher.

 

Here is a good write up on catch can and pressure drops throughout the PCV line with one installed.
http://www.conceptualpolymer.com/PCV...oval%20101.pdf

 

I'm not too concerened if my pcv looses 10% of its flow, I'm sure it lost alot more than that when I put my cam in and lowered the vacume in the intake manifold. And I highly doubt they lowered the flow that amount since there is no restriction. I can blow through them like it is just a 3/8" hose.