Fundamental PCV systems

The Convert

Captain
Jun 4, 2017
1,487
1,052
0
Ride
335
Sorry about that.meant manifold vacuum @ 22"hg
Manifold vacuum is completely unrelated to crankcase vacuum. Best way to measure crankcase vacuum is to buy the Bmw tool that is basically an oil cap with a barb fitting in it and you just run a line from it to your gage of choice, provided your gage measures vacuum and not just boost. Only downside to the bmw tool is it’s ~$100 of course.
 

syn909

Specialist
Jun 27, 2018
64
22
0
Ride
'07 335i
Radium has a new Air to oil separator with return catch can! It sure does seem awesome having not to empty the low side catch can every so often. Caveat is needing a plumb back into oil system and feeding coolant to heat it. You would just need to empty this of water occasionally http://www.radiumauto.com/Universal-Air-Oil-Separator-Return-AOS-R-P890.aspx
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