[Elite Engineering]

Originally Posted by 20Bluezl1

Elite, do you have any input on the above questions regarding for PCV valve not being fully ported compared to MM.

To clarify a few things.


First, the MM will allow far too much flow so it will actually allow more oil to be pulled from the crankcase. The proper flow for a V8 sized crankcase is 3-3.5 CFM, and that's why our fixed orifice is slightly larger than stock to achieve the proper flow. You NEVER want to allow full vacuum flow on the crankcase as this pulls in excessive oil. And as the MM is such an inefficient internal design and only traps a small amount vs what enters it, you are doing little to prevent KR from oil mist. But as they work under the assumption that allowing pressure to build and vent, it is probably needed to avoid seal failures. This will also play havoc with short term fuel trims as far more air is entering than is expected. We want to control the rate of flow as the industry has determined. No assumptions here like others. Science only.


As for the user with the JLT, that can allows far more to pass through than it traps as this shows from the same car, same miles:


JLT left, our design right:


https://hosting.photobucket.com/albu...psmltwd0tu.jpg


So there is a huge disparity in what a "catchcan" traps. And most just look and see they caught something and assume that is a benefit. With a truly effective and efficient separator you wont find ANY oil coating your IM as it works its way out when ingestion is stopped. So most are thinking they are helping, but a GDI engine cannot tolerate any but the smallest amount of ingestion.


As for power lost and regained. At Chris's level of coking, I estimate he will regain 8-14 whp after a cleaning. Here is a LT1 at 20k miles that regained app. 20 whp. Same day, same dyno:


https://hosting.photobucket.com/albu...psudzvlz5x.jpg


And his valves looked like this before cleaning:


https://hosting.photobucket.com/albu...psuvonhsxx.jpg


Here is a picture of Chris's:


https://hosting.photobucket.com/albu...pscexl1eee.jpg


So, as his is boosted and the 20 whp regained was NA, I assume the boost is going to overcome some of the disruption caused by his coking. So it's possible he could regain that much. And we have never done a study on X amount of miles equals x amount of power loss, as every engine is different. Best to do your own before and after. Dyno before and then clean manually, and same day dyno the after on the same dyno and you should have a good idea. It's going to be directly related to the severity of the deposits. Chris only has app. 4500 miles on his I believe.


So unlike some others, we DON'T play games. All is based on science and we don't blindly follow others, we lead.


Email direct for ANY technical questions: Tech@EliteEngineeringUSA.com