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  1. RoaringFork

    Wits End Turbo Owners

    The intake tube(pre turbo)is not always under vacuum(when throttle valve is closed, ie idle or deceleration), it is however always open to the breather hose so crankcase venting can happen anytime if that is the path of least resistance. this is all correct This has me thinking… the following...
  2. RoaringFork

    Wits End Turbo Owners

    I’m having trouble picturing what you’re describing? “cap off manifold and move the PCV line to the intake tube” so both PCV and breather hoses to intake tube? Or eliminate breather hose? How about a visual? the theory behind 2 hoses is the gasses will always have a source of suction to...
  3. RoaringFork

    Wits End Turbo Owners

    The majority of the crankcase pressure is created by blow by, for any flow circumstance. The difference is where the suction to evacuate the pressure is coming from… the picture above is describing flow when: the manifold is no longer the source of suction(ie when under boost or open throttle...
  4. RoaringFork

    Wits End Turbo Owners

    there is really no way around PCV unless you vent it to atmosphere or the exhaust, but that would be against emissions laws… I would like to see the PCV valve moved or another check valve added closer to the manifold(green circle in pic below)… as pictured boost pressure fills the hoses and...
  5. RoaringFork

    Wits End Turbo Owners

    Ok, the PCV system flows as follows: ^^^ When the manifold is under vacuum, and there is enough crankcase pressure to fulfill said manifold vacuum… ^^^ when the manifold is under vacuum and crankcase pressure has been evacuated. This is an unsealed system, instead of pulling a vacuum on...
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