Crankcase Vacuum Question [Archive] - Toyota MR2 Message Board

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Just got to thinking about something today on my 3SGE Beams. Anyone notice that our PCV system looks like its designed to keep atmospheric pressure (neither pressure nor vacuum) in the crankcase? Are our rings designed to work with this? I would think it would be better to have vacuum building in the crankcase to promote ring seal. I currently run a Greddy catch can with baffles installed in it. It does a good job of separating the oil from the air, keeping the intake plentum pretty clean. I