Excessive Crankcase possible problem and solution.

[keltalon]

Well for the last couple of week I have been having this problem with oil blowing out of my valve cover ports and getting all over my engine bay. After doing much reading I was thinking maybe I have a blown piston ring or something else seriously wrong. I did a compression check and everything looks exellent 165 across the board. leak down test also was good.

No vapor coming out of valve cover at idle nor any vapors out of the dipstick tube. Spark plugs looks clean with no oil buildup what so ever. I tap for more ventilation on my valve cover and even installed a greddy oil catch can this stopped the oil mess on my engine bay. But another problem developed I began to fill up the oil catch can pretty quickly. I knew something wasn't right. So I started to read extensively online join all kinds of turbo forums trying to seek answers. After many hours reading and digging I found on one site a similar issue and how he fixed the problem.

He suggested that his baffles under his valve cover had lost his sealing properties and suggested that i check mine. Lo and behold problem found and oil blowing all over everything and filling up catchcan a thing of the past. So if you are having a similar problem and you engine is health check you baffles and make sure they haven't come loose. Here is a video of what I am talking about this was taken before problem was fixed.

<iframe width="420" height="315" src="http://www.youtube.com/embed/o7rx2WzmLAw" frameborder="0" allowfullscreen></iframe>

 

[bastarddsm]

That's sort of a bandaide fix. treating the symptom, not the problem. The real problem is that you have waaay to much oil floating around in the head.

Kiggly's HLA regulator, or even the JDM regulator goes a long way to fixing the problem.

Our oiling systems goto shit in one hell of a hurry once you start tuning some rpm with big boost.

 

[2slow4now]

Maybe excessive blow by is getting alot of oil up there but that baffle does need sealed back up. Any oil that gets slung on it from the cams gets pushed right around it instead of letting it just settle back to the oil drains. I just did a tech how to on resealing the baffle. Did you see it? http://www.dsmtuners.com/forums/art...emoval-reinstallation-valve-cover-baffle.html

 

[keltalon]

That's sort of a bandaide fix. treating the symptom, not the problem. The real problem is that you have waaay to much oil floating around in the head.

Kiggly's HLA regulator, or even the JDM regulator goes a long way to fixing the problem.

Our oiling systems goto shit in one hell of a hurry once you start tuning some rpm with big boost.

I understand what you are saying but I would have oil come out just at cruising rpm very messing when boost hit. I have fixed the problem and no more oil. That torn baffle is just like running the car with no baffles oil just goes right out. I have done numerous pulls to 8500 and no oil what so ever I will be hitting the dyno friday for sure.

 

[keltalon]

Maybe excessive blow by is getting alot of oil up there but that baffle does need sealed back up. Any oil that gets slung on it from the cams gets pushed right around it instead of letting it just settle back to the oil drains. I just did a tech how to on resealing the baffle. Did you see it? http://www.dsmtuners.com/forums/art...emoval-reinstallation-valve-cover-baffle.html

Yeah I saw that. I am a woodworker so I drilled the holes out cleaned the valve cover and put it back together and now I am happy

 

[bastarddsm]

I saw a huge improvement in oil in my catch can after going to the jdm regulator. I'm planning on venting the crankcase directly from the balancer shaft hump area.

 

[talonalex92]

I saw a huge improvement in oil in my catch can after going to the jdm regulator. I'm planning on venting the crankcase directly from the balancer shaft hump area.

That's pretty common on evo's, I'm suprised more dsmers don't do it actually.