Hey I'm finally getting back around to my neglected TD. I wanted to ask if any of you guys are doing anything for crank case evacuation? The reason I'm asking is because the last 2 builds on my engine I have had issues with blow by and blowing oil out of my valve cover breather. I was definitely pressurizing my crankcase.... I ran across the custom electric vacuum pump set up and I'm considering building something very similar to it. I wanted to get feed back from my fellow TD'ers. I've attached pictures below of the setup I was talking about and things a few statements that were in his post too.
Stated Benefits with a electric vacuum pump:
ELECTRIC CRANKCASE EVACUATION SYSTEM
Apply a vacuum source to the crankcase. Rather than putting a breather on the valve cover to let crankcase pressure out, pull the air out with a pump to create a vacuum.
Benefits of Negative Crankcase Pressure using an Electric Pump:
1) Prevents oil leaks from seals and gaskets by eliminating crankcase pressure.
2) Reduces parasitic losses from pistons pumping against crankcase air.
3) Improves piston ring seal.
4) Increases HP and makes your engine last longer.
5) Eliminates your PCV system and the possibility of oil being sucked into your engine keeping your intake system and combustion chambers clean.
6) Eliminates the need for mechanical belt driven evacuation pump that robs some HP and needs rebuilding frequently.
7) Superior to valve cover breathers and exhaust path suction type pcv systems which contaminate your exhaust system and mufflers with oil.
8) Pump can be set up with the filtered crankcase exhaust routed to air filter housing instead of out to breather if desired for a closed loop system (emission friendly).
9) Fits in factory battery tray for easy access to engine. (Battery must be relocated to trunk or rear compartment).
10) Ideal for Turbo, Supercharged and high compression engines which create higher crankcase pressures at high RPM’s/Loads.
11) Creates 5 inches of vacuum in your crankcase with a very high CFM air flow when needed at high RPM’s, exhausting and filtering all blowby, while still maintaining its vacuum for ring seal.
12) The waste oil level is easily seen through sight hose and drained through a valve on the side of catch can. If any oil vapors pass the modified Catch can, they will be condensed and caught in the Air Dryer before reaching the pump to ensure long pump life.