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I see lots of catch can talk at Charger and Challenger forums. The idea makes sense to me. No oil no foul.
 

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Why are people with Chargers and Challengers discussing this?
There aren't any DI engines in those cars.
Because runoff goop going back into the intake is runoff goop going back into the engine, no matter what.
 

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Because runoff goop going back into the intake is runoff goop going back into the engine, no matter what.
True.
I know Chrysler is working on a cooled EGR for their engines for use when they go DI. Supposed to condense the vapors before they get to the intake valves.
But all that says to me is the goop is going to be stuck somewhere else instead of on the intake valves.
 

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True.
I know Chrysler is working on a cooled EGR for their engines for use when they go DI. Supposed to condense the vapors before they get to the intake valves.
But all that says to me is the goop is going to be stuck somewhere else instead of on the intake valves.
Hence the catch can. I should do one for my Soul.

Once you collect a couple of ounces, you can set it on fire in your back yard, thus disposing of it in an environmentally harmonious manner.:cool:
 

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Hence the catch can. I should do one for my Soul.

Once you collect a couple of ounces, you can set it on fire in your back yard, thus disposing of it in an environmentally harmonious manner.:cool:
Not without a permit :nono:
 

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Catch cans are cheap insurance.... Engines are thousands of dollars..... Now why wouldn't any of these auto manufacturers install this cheap insurance? The only logical answer is they not only don't work, they could potentially damage your engine.....stay away from catch cans!
 

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Read entire article:

Purpose of your Stock PCV System:

The PCV (Positive Crankcase Ventilation) system is designed to regulate and remove fumes from the engine crankcase, and to alleviate crankcase pressure which could cause oil leaks or seal damage. It’s a way for gases to escape in a controlled manner from the crankcase of an internal combustion engine.
During normal operation of an internal combustion engine, there’s a compressed air and fuel mixture inside the combustion chamber that is ignited and as a result, forces the piston down. A small amount of that ignited mixture leaks past the piston rings and ends up in the crankcase. This leakage is often referred to as “blow-by” (leakage past the piston rings), as well as oil mist.
Some of the oil mist and other products settle along the engine intake and over time form a “gunk.” The oil catch can collects the oil mist and condenses the fuel vapors while allowing “cleaner” gases to be passed back into the intake. Typically the blow-by gasses are passed through a wire mesh, which give the vapor droplets something to adhere to. Since the oil catch cans condense the vapor portion of the gasses, they will need to be drained periodically of all the oil, fuel and other contaminants.
In addition to the air/fuel mixture and oil mist, there’s also the possibility of condensation, or water droplets. Condensation is more susceptible in humid climates, but it can exist anywhere there is fluctuation in temperatures in a hot to cold environment.
If these contaminates are kept inside the combustion chamber, they will eventually make their way into the oil inside the crankcase and cause oil contamination and dilution or make their way back into the intake manifold.
This problem has been around forever. In the past, engines were equipped with breathers that would allow the crankcase to “breath”. The addition of these breathers resulted in moderate engine life improvement. However, it was not until the engine’s crankcase was fitted with a vent or evacuation tube that major improvements were experienced.

As the EPA and the powers that be mandated stricter emission laws the system was refined more and more ultimately evolving into what we have today. A completely sealed system that uses the vacuum provided by the intake manifold to draw these vapors out, and the filtered fresh makeup air is drawn from the main air intake system and filtered by the main air filter. This results in very clean emissions, but the unintended issues are the detonation or “knock” that occurs when oil is introduced into the combustion chamber that the knock sensors pick up (before we can hear it) and pull timing to protect the engine from damage, and thus reduced power. Another result is the carbon buildup on the valves & piston tops (any techs reading this can surely verify the amount) also resulting in decreased performance and less power made.

The purpose of a proper oil separating catch can is to route these gasses through a baffle system that provides the most contact possible with the outer surface resulting in the oil being trapped and removed from the other gasses that do continue on through the intake and are burnt and consumed. It does NOTHING else in ANY way to the engine oil itself….it can’t.

Not all Catch Cans are created equally! Often imitated, never duplicated. Most Catch Cans on the market are just comprised of an empty container with 2 ports. While that simple design may trap a few oil droplets, a well-engineered Catch Can is designed to condense the oil vapor and trap the oil inside the container. CatchCan

A test proven design incorporates a stainless steel mesh and screening mechanism that acts like a maze to collect and condense the oil vapor. Once the oil vapors condense into liquid droplets, it falls to the bottom of the can. In addition, the top assembly is specially designed to keep any liquid from climbing out the exit hole during aggressive driving conditions. You will be amazed by how much oil a well designed and engineered Catch Can will catch! Don’t settle for an empty can without any internal baffles and collection systems. The lack of an effective baffle system allow oil to be pulled directly through the intake manifold.

In comparison, the “O-Reilly” or “Autozone” oil separator, it will, and does catch a small amount of the oil but the majority still gets past into the intake.

Why don’t the auto manufacturers incorporate something similar? Cost and the added maintenance was deemed something that would NOT be accepted by the general market (even though it is as simple as draining the can at each oil change).

Bottom line is this: The OEM system does a great job of meeting emission standards and removing the harmful contaminants, but the unintended consequences are the oil that is drawn into the intake charge. For an engine to produce the maximum amount of energy per explosion (of the A/F in the combustion chamber) you want air & fuel only….any amount of oil in this mix will hamper the explosion resulting in less energy released, detonation, and carbon buildup. Trapping and removing this oil before it gets into the combustion chamber is the ONLY solution to maintaining the maximum efficiency and prevent excess carbon buildup. A correctly designed and installed Oil Catch Can solves this problem.


http://oilcatchcan.com/

http://www.e90post.com/forums/showthread.php?t=413398
 

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So a $20 catch can was deemed to expensive to save a couple thousand dollar engine....and it could be emptied at every oil change....how simple....Or maybe Not need!!!!!
 

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So a $20 catch can was deemed to expensive to save a couple thousand dollar engine....and it could be emptied at every oil change....how simple....Or maybe Not need!!!!!
Look. Think what you like. I don't care to try to convince you. If you think it's a bad idea, fine. Don't friggin buy one.
 
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Got mine in the mail the other day.

Just need to wait for the thaw to get it installed. This winter has been the worst in memory :mad:
 

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So a $20 catch can was deemed to expensive to save a couple thousand dollar engine....and it could be emptied at every oil change....how simple....Or maybe Not need!!!!!
Why would a manufacturer spend additional money to add a catch can at X dollars per vehicle, which then is another component needing regular service (while customers are demanding their vehicles require as minimal maintenance as possible)?

The engine with the world's worst PCV system will still make it through the warranty period with a sludged up intake costing mpg and horsepower without blowing up. Why then would the manufacturer spend more money to design and install any type of catch can?
 

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What your suggesting is that ALL automakers don't care about their customers beyond the warrenty period! They want to destroy any good will to save $20 per engine....are you insane?
 

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Got mine in the mail the other day.

Just need to wait for the thaw to get it installed. This winter has been the worst in memory :mad:
bah, I helped my buddy swap out the transmission in his Reatta, in a snow storm
 

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Why would a manufacturer spend additional money to add a catch can at X dollars per vehicle, which then is another component needing regular service (while customers are demanding their vehicles require as minimal maintenance as possible)?

The engine with the world's worst PCV system will still make it through the warranty period with a sludged up intake costing mpg and horsepower without blowing up. Why then would the manufacturer spend more money to design and install any type of catch can?
Why indeed?

What your suggesting is that ALL automakers don't care about their customers beyond the warrenty period! They want to destroy any good will to save $20 per engine....are you insane?
Yes we can!
 
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