Quote:
Originally Posted by Andrew7dg
A setup like your only take care of half of "crankcase ventilation", it will be enough to relief pressure in most cases but it will do nothing to ventilate crankcase due to lack of vacuum in the system, ventilation as in removing blow by and contaminates which will settle into your oil if not pulled out.
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What do you think the PCV is for???
Here is how it works, at idle and cruise intake vacuum from the intake manifold is transfered thru the PCV hose, throught the PCV valve, thru the engine and on to the breather. All the breather does is supply incoming air to counter act the vacuum inside the engine which removes fumes and contaminants by sucking them into the intake to burn in the engine. So whether you get the fresh air from the intake pipe after the air filter, but before the turbo or from an external breather, it doesn't matter to the PCV system. At WOT there is no vacuum, so the PCV shuts closed and is not used.
So would you rather have the fumes and contaminants go out thru an external breather/catch can or feed it into your turbo at WOT?
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