Quote:
Originally Posted by Elite Engineering
Yes. A NA engine relies on intake manifold vacuum for evacuation of the damaging compounds that enter the crankcase as blow-by (all engines have some) and when you accelerate, or run at WOT, there is no vacuum present due to the reversion pulses traveling back up the runners from cam lobe overlap.
So the second outlet (were talking NA engines here, FI is a bit different) is used to provide a secondary evacuation suction source, and that is the area just upstream of the throttle body as the reversion does not reach past the TB until well over 8k RPM.
The check valves (almost all new engines today now come with them from the factory in the stock PCV valve assy) prevent any back flow that could bring the separated compounds back in, and also prevent any pressure entering through this path.
The 2 check valves go in the outlet side lines (Exit) and will automatically open and close as needed to default to the strongest suction source providing full time evacuation of the contaminates. Why is this good? During any stagnant periods (and the vents, breathers, and "tanks" were seeing people use allow far more, or most all to remain in the crankcase contaminating the engine oil, etc. if used greatly increasing internal wear, etc. and allowing pressure to be present so you always want to pull suction VS letting pressure build and vent) the abrasive and damaging compounds all engines have entering has a chance to settle and mix with the oil, and once there, most is there to stay.
So yes, the benefits are many with our latest designs, and a must with and direct injection engine.
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Okay, I was afraid of that. So...in order to fully protect my engine like I wanted with the original E2, I have to now upgrade to the E2x to get full complete protection. I wish I knew this beforehand because I would have waited for the E2x instead of buying the original E2 catch can.
Whenever I inquired about this second exit port on the E2x with optional check valves, I was told this was primarily for FI applications, not N/A. Now, I being told this is also good for N/A providing even better protection against coking compared to the original E2 catch can.
Is there any way to upgrade the E2 to provide the same benefit of the E2x? You know, like perhaps running a splitter on the exit port with a second hose line to the TB to provide an additional source of vacuum under high reversion situations? If not, then I think it would be a good idea to offer some kind of core/credit replacement program for those who originally bought the E2 catch but now want to upgrade to the more effective E2x.