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Old 02-26-2017, 08:45 PM   #1
Jbelmonte
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Join Date: Sep 2016
Drives: 2013 Subaru BRZ, AVO Stage 2 Turbo
Location: Kenosha, WI
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Excessive oil in PCV side air/oil separator

I'm running an AVO turbo kit with their upgraded turbo PCV Valve. Originally I was using the AVO breather tank system but recently swapped it out for a dual Jegs Air/Oil separator setup.

This setup consists of one separator on the PCV side and one on the breather side. It's routed in a similar manner as the dual Radium kits:
  • On the PCV side, the hose goes from a fitting in the PCV hole on the block to the separator, then from the separator through the AVO PCV valve terminating at the Intake Manifold
  • The breather side goes from the breather port in the block, through the second separator terminating at the pre-turbo intake tube


Since installing these Jegs separators I've noticed that the PCV side separator fills up with oil after only 20 minutes of normal city driving, the breather side stays dry.

What could be causing the PCV circuit to be pulling so much oil?

The only thing I can think of is when I had the AVO setup, the PCV circuit air flow was diluted between the breather tank and block. Now, all the air going into the PCV is directly from the block

Any ideas or suggestions would be much appreciated
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