Quote:
Originally Posted by Mountain
Outside of helping keep the valves clean, there is also a concern with what oil vapor/mist can do to combustion performance (relating to power) and possibly LSPI. The LT1 in the Camaro has a separator in the clean-air side of the PCV system, which is great. The dirty-air side is at the mercy of the PCV valve, which does allow oil vapor into the intake. At manifold pressures during track driving, the PCV valve is supposed to be more-less closed, with most of the crankcase vapor going through the clean-air side (think 80/20-ish).
There are a lot of depends associated... a lot with what oil is being used and how well a particular engine rings have seated.
This is always a hot topic. Keep it at "suggested". It's not "needed" per-say.
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interesting... that is what i was thinking that little black box was. so when you put a catch can you have to put on both sides of the engine? I guess i have to watch video to educate myself. thanks for ur answer