Crankcase ventilation/Oil Separator Mod - PeachParts Mercedes-Benz Forum

whunter · #10 09-30-2006, 09:19 PM

Quote:

Originally Posted by ForcedInduction

I got a free air line water/oil separator from work. The bowl has a small crack and hissed with the 160 psi line pressure. It works with centrifugal force and a porous plastic filter.

So far it's working pretty well. After a hard run to get the engine hot, it no longer looks like I have a steam engine under my car. The exit is still vented to the atmosphere until I'm satisfied the system works. The air cleaner and u-tube are from a 79 300SD (The reason for the lack of an CCV port in the lid and the plug in the u-tube.)

It's already gathered a few drops worth of oil, but it's only been on for 30 miles.

Warnings:

oil tube
http://www.peachparts.com/shopforum/showthread.php?p=552609

I removed my oil separator!
http://www.peachparts.com/shopforum/showthread.php?p=770906

The oil separator has three legs.
#1. Crank case vapor pressure output...
#2. Vent to intake air, (draws off pressure).
#3. Oil return line, (pressure neutral, gravity feed).
Loose any of these, and it will damage your engine.

* Lose #1 and spray oil out, potentially until the engine is empty.
* Lose #2 and build crank case pressure until you blow enough seals/gaskets to relieve pressure.
* Lose #3 and drain oil out, potentially until the engine is empty.

Look at http://www.924.org for an alternative 924T air/oil separator.
http://www.924.org/parts/PartsPics/931_oil_separator2.jpg

Lingenfelter Oil Air Vapor Separator Replacement filter element
http://www.lingenfelter.com/store/ln-tt33fl.html

Moroso Oil/Air Separator
http://www.jegs.com/webapp/wcs/stores/servlet/CategoryDisplay?storeId=10001&catalogId=10002&catalogIdentifier=Jegs_Direct&categoryId=78209&parentCategoryId=10475

Have a great day.