Greetings,
I read a thread a while back where some people were talking about how they had bought a K&N filter model RU-1000 and attached it directly to the turbo housing. It sounded like a novel idea so I went ahead about bought the filter and it came today. I plan on making a new oil separator, but for the mean time, what will happen if I attach the K&N to the turbo and bypass the original filter, but let the original oil separator keep on working? That is, what will happen if the oil separator works without any source of vacuum (originally created by the air flow in the filter housing)? I just re-read this and I'm not sure if I worded it so that it will make sense. I hope it does, I'm sure there's someone who is as scatter brained as I am who will be able to figure out what I'm trying to say. Thanks.

Alex

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1983 300D (parked for four years)
2012 VW Sportwagen TDI Manual
2001 Miata SE
1962 Chevrolet Corvair Rampside

Unless you plug the inlet/outlet to the air filter housing up the crankcase gases will just be vented to the atmosphere. Not a healthy thing for the environment but OTR trucks did this for years. The oil separator should continue to work as designed. I would wait until I had all the pieces to do the conversion completely. RT

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When all else fails, vote from the rooftops!
84' Mercedes Benz 300D Anthracite/black, 171K
03' Volkswagen Jetta TDI blue/black, 93K
93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K