Quote:
Originally Posted by cured13
The only problem and question is how to keep that catch can accurately restrictive for healthy engine?
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I forgot to comment on this fully. Not all engines are turbocharged, and would those will not benefit from any oil coating. This is a good line of thinking which I believe many engineers have also reasoned with, since we cannot prevent 100% of the oil from exiting the crankcase at WOT for 200,000 miles, and many consumers will not be savvy enough to realize the need to wash their intake plumbing every so often (sigh), why not design a very small "catch" device which can be easily cleaned and is small enough to not impede WOT pressure drop?
Such a device does exist, I've seen it. Here is one such company which offers that device.
They make some catch devices for corvettes, naturally aspirated, which will reduce or eliminate the oil which can gradually coat the throttle body (since there is no turbocharger or intercooler plumbing).
Its not really a can. Its just a small air/oil separator, and excellent idea and minimal volume. The same company also offers inline restrictors to correct pcv function as necessary.
So you are correct to imagine such a thing. It is not such a bad idea. I am not against oil CONTROL. Its just that there are soooo many ways to screw up the necessary design of a PCV system... you really have to be a master enthusiast or an actually experienced+engineer to relate the details... volume, flow, viscosity of fluids, intended effect. And this is the most critical system on the engine in my opinion. It literally controls the quality of engine oil, the longevity of an engine, the leakiness or potential for oil leaks of the engine, the piston ring function, and the cleanliness of the engine's internals over a long period of time. It is the most important thing to understand about performance, and often the last thing, most highly neglected aspect of all that people will understand... if ever. Ironic