Quote:
Originally Posted by toomany MBZ
That hose inserts to a drain that goes to the oil pan, sorta, an oil separator.
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Yea i saw that too. BMW's have a simular setup on there PCV system too. The system is working just not well and its still breathing in quite a bit of oily vapors and making everything nasty. I have no idea how many miles it has on it, the odometer was inop. when i got the car a couple of weeks ago and it stopped just shy of 300K miles. Its well worn, has alot of
blow-by in the crankcase, im sure a leakdown test would show fair leakage, so this is in large why its producing so much oily vapor. Its ok for now, It still runs pretty good, starts fine if you let it glow, plenty of power for an old engine. When it gets to the point of beeing a problem, ill look into doing an overhaul but for now, ill run it and maintain it as is. And tonight i finished the Oil/Vapor separator. Works pretty good, needs a couple of refinements but not bad. The factory unit in the air cleaner is plugged off. The valve cover port is now routed round the back of the V/C to the top of the separator on the left/firewall in front of the brake m/c.
(ill try to get pics) Its a 1' piece of PVC pipe with end caps, inlet into the top cap and has a copper "straw" soldiered into it that takes incoming vapor to the bottom of the unit inside, then it re-routes back up the chamber through stainless media to collect the oil from the air and oil drips back out of it to the bottom to be drained off via ball valve, the vapor travels through the media to the outlet at the top/side of the unit and is routed via hose down the engine bay to the underside of the chassis where it vents to atmosphere. I'm in a non-emmisions state but if i wern't its much cleaner now and could be routed back to the intake now. Im still working on media efficiancy to get it better. I'd like to use a cyclonic action to centrafugally spin oil out of the air aswell. More experementing to go!
Side Note: I made a simular system for my buddies Powerstroke, these too have oily induction issues, they end up with deteriorated boost plumbing and boots from oil contamination which they can blow off or split open. Also dirtys the intercooler up and drops effiency. Dirty engine compartment. More smoke and emissions, etc. BD diesel makes a nice separator unit for PSD's and I dont see why it cant work on any diesel but it is pricy. Thought I'd share!