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Oil catch can?

C25A1guy

By C25A1guy
in Engines & Drivetrain

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mjj Enthusiast

mjj

Posted
Posted

I am new newer this forum. Been reading several of these catch can topics. I just had a few questions. Looking at mjj's picture up above in post #604, I had a question. Not knowing how the intake is plumbed, I noticed that both valve covers have a hose that run to the air intake "wing" apparatus? Is that air that is being pulled out of motor to be reburned, or pushed into the motor?

 

I was going to attach an edited picture, but have yet to figure that out.

I believe those are breather hoses to the value covers so they are just sucking air into the value covers. When I installed my catch can and I looked inside that funky shaped winged thing it was clean and dry. Now if somebody knows why GM made this the shape it is I'd love to know.

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ToesonTheNose
ToesonTheNose

Here at RX now they are doing a video install on my truck

Jay700
Jay700

My dealership said my catch can wasn't needed and wouldn't catch anything. I opened it in there shop after 2,000 miles and let it run on the floor. Lol

fondupot
fondupot

So, I added a second output fitting to my Original RX catch can. I had been emailing with the RevExtreme folks about the benefits of a dual output can, and they were gracious enough to send me the par

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chevy2tuff2006 Enthusiast

chevy2tuff2006

Posted
Posted (edited)

et, I think you have all officially scared me into getting one lol?

 

I have the Elite Engineering catch can. The entire can unscrews from the top so you can see inside. Its less expensive than the RX but possibly hold less, the bottom part is about the size of a pop can. It works great and looks and feels very well built.

 

i have an elite also and i think you have yours plumbed wrong. the top fitting is the inlet from the crank case and the side fitting goes to the intake.....

Edited by chevy2tuff2006
07Softail Senior Enthusiast

07Softail

Posted
Posted

I believe those are breather hoses to the value covers so they are just sucking air into the value covers. When I installed my catch can and I looked inside that funky shaped winged thing it was clean and dry. Now if somebody knows why GM made this the shape it is I'd love to know.

GM made the Intake tube baffled like that so it would be quite inside the cab. Some people do not like the intake noise that you get from say an Airaid CAI.

 

RT

mjj Enthusiast

mjj

Posted
Posted

 

i have an elite also and i think you have yours plumbed wrong. the top fitting is the inlet from the crank case and the side fitting goes to the intake.....

Maybe the pic doesn't show it well as the lines cross in the pic but I do have the top port of the can coming from the side of the engine and the side port on the can going to the front of the engine right below to intake opening.

chevy2tuff2006 Enthusiast

chevy2tuff2006

Posted
Posted (edited)

no it has to go the other way the front of the engine (pcv valve or crankcase it called) to the top fitting of the can and top side of the engine (intake manifold) to the side fitting on the can... it is wrong right now your catch can isn't working the way it was designed.....

Edited by chevy2tuff2006
mjj Enthusiast

mjj

Posted
Posted

no it has to go the other way the front of the engine (pcv valve or crankcase it called) to the top fitting of the can and top side of the engine (intake manifold) to the side fitting on the can... it is wrong right now your catch can isn't working the way it was designed.....

Here's the diagram for it (fyi, the can was initially ordered for a v6 Acadia). I thought it went into the front by the throttle body to be burned off? If mine is backwards I'm totally misunderstanding how the pvc system works???

post-138443-0-94611100-1425235064_thumb.jpg

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chevy2tuff2006 Enthusiast

chevy2tuff2006

Posted
Posted

If you look at your instruction by the Exit connection it says to the intake manifold and the inlet connection it says from the engines pcv system which is located under the throttle body. The system is a vent for the crank case so it vents into the intake manifold to be burned in the heads with the intake stroke of the engine. When your crank is rotating during use it creates pressure were the crank is housed in the engine so there for it needs a vent somewhere so you don't blow gaskets and such. This is nothing new on modern engines it is just a problem with direct injection because the fuel and air are no longer mixed in the intake manifold like the vortec or other multiport injection, the fuel is injected directly into the piston chambers. Thus in older vortec engines the gas would clean the valves so hense no oil build up on them were as now the gas doesn't get to the valves as much to clean them. So the system works from under the throttle body (pcv system, crank case) vents the oil/moisture saturated air to the intake manifold (top side of the engine half way down the black intake manifold) were it enters the intake and gets sucked into the heads on the intake stroke of the engine. So ya just switch your connections around and you will be all good...Hope this helps.

mjj Enthusiast

mjj

Posted
Posted

Yep, well I guess I misunderstood how the system on the truck worked. I appreciate the info. I think Digger3 also tried to tell me this in a PM earlier. I guess I was sure I had it right. The thing sure did still collect stuff though. Well only 2 weeks and about 450 miles with it installed this way so hopefully no real damage. Again I appreciate the info, which is one of the great things about this forum. 30 seconds to swap my hoses at the can, which I've just completed.

wmtrucker Enthusiast

wmtrucker

Posted
Posted (edited)

My setup, drained today

 

db259cf9ff134f7ccf36d3d261676274.jpg

 

 

Ryan

got any better pics of how you run the hoses for this catch can ? I ordered my mike moirris can tonight want a better ideal how and where your hoses are ran,also is everything included with the set up or do I need to buy hoses and clamps thanks also mine is for the 5.3 with a airaid filter set up already installed Edited by wmtrucker
Asells Enthusiast

Asells

Posted
Posted

Put mine on this weekend. I day of driving (36 miles). This is what i got just about an ounce.

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post-137286-0-99912200-1425334853_thumb.jpg

thetruck454 Enthusiast

thetruck454

Posted
Posted

I was talking to some reputable shops on the camaro side about what to do for the clean side of the PCV. I already have a elite engineering E2 can ordered for the dirty side. They said the clean side separators work great, but in cold climates they tend to collect moisture and then dump that moisture back into the engine which would be bad. I know of my dirty side can on the 03' in the winter months I have to empty it often and it's always more water than oil. They suggested putting another catch can on the clean side instead. What are peoples thoughts on this?

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

got any better pics of how you run the hoses for this catch can ? I ordered my mike moirris can tonight want a better ideal how and where your hoses are ran,also is everything included with the set up or do I need to buy hoses and clamps thanks also mine is for the 5.3 with a airaid filter set up already installed

What year is yours?

 

 

Ryan

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