Quote:
Originally Posted by PoorMans180SX
Again, I believe a properly integrated fresh air feed and PCV system is the superior way to do things. I also think that draining the catch cans to the crankcase is harmless and convenient.
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Integrated fresh what...? What does even mean
Superior way to do "what" things?
Be specific. I am very specific. The factory is very specific.
Specificity:
PCV implies a pressure below atmospheric.
Thus, there must be a vacuum inside the crankcase or it isn't pcv.
How much vacuum? Specifically: 1 to 3" of Hg of vacuum
It's as simple as that. Meet the criterion, and have PCV. Or not.
You sound like somebody who has never measured their crankcase pressure.
All advanced racing and high power engines 1000 2000 3000hp require crankcase pressure monitoring to determine engine health statistic. Or it is a novice installation.
The crankcase pressure must be kept in wet sump applications between 1 to 3" of Hg. That is wet sump PCV.
The air must always be filtered as high quality as possible (obviously). Every engine, every mechanical device, in every application around the world requires the cleanest possible air, this is a very obvious engineering and mechanical ideal to keep the engine clean inside. This is the only way to achieve high mileage.
Get it: Clean as possible air (
superior filtration) + PCV (
1 to 3" of Hg inside crankcase at all times) = high mileage capable, factory engine longevity. Daily drive-able
In this configuration, there is no oil aspiration or oil inside the intake manifold. How is that even possible? The turbocharger
compressor is ten miles from the intake manifold. The oil would literally have to pass through miles of plumbing and the intercooler to reach the intake manifold, it means the engine is bad, the intercooler needs to be removed and washed out, the pipes all need to be cleaned out, the engine needs to be fixed at that point. The intercooler must remain OIL-FREE thus a healthy engine cannot send any oil to the intake manifold if the oil cannot reach the intercooler. This is the only side of the system under any form of duress during power output. The manifold suction you seem to be referencing and pcv valve config is for IDLE/CRUISE Only which is the tamest/simplest/minimal PCV flow and has nothing to do with the bottom end or engine health.
You are confused about which side of the pcv system is "working". Like so many others you fail to see how the
air filter pressure drop influences the oil flow from an engine; If you remove the engine air filter then oil will gradually push from an engine due to the excess crankcase pressure. Only the air filter can provide the suction necessary to drive adequate PCV action at wide open throttle, otherwise there must be a vacuum pump or other source.