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Oil catch can?

C25A1guy

By C25A1guy
in Engines & Drivetrain

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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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Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted (edited)

Do we need to be worried about blowing out any gaskets/seals by disrupting the PCV system with an oil catch can? According this video on a Ram that was posted in another thread here on the forum, the guy in the video installed a catch can because of the oil blow by problems on PCV systems and he said it ended up disrupting the system to the point that the oil pan gasket failed and he developed a leak. He has since removed the can and returned everything to stock.

 

Fast forward to the 2:00 minute mark:

 

 

 

 

EDIT: In doing some more research it seems the issue this guy experienced is back pressure into the crank case caused by turbo charged systems on deceleration (I don't fully understand how that happens but that's what I've read), which the RX can prevents this with the check valve. I'm guessing this guy had a cheaper can without a check valve and that back pressure on the turbo charged EcoDiesel eventually blew the seals out.

Edited by Silverado-Hareek
POS VETT Enthusiast

POS VETT

Posted
Posted

That seemed to be a case in a turbocharged engine with a bunch of boost. The catch can must have been installed without a one-way valve, one-way valve installed backward, or the one-way valve was allowed to remain open. The result is the crankcase is pressurized as much as the turbocharger provides and creating seal problem.

 

This is a problem related to either a mistake in installation or component failure. Adding a catch can by its own doesn't create the aforementioned problem.

Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

That seemed to be a case in a turbocharged engine with a bunch of boost. The catch can must have been installed without a one-way valve, one-way valve installed backward, or the one-way valve was allowed to remain open. The result is the crankcase is pressurized as much as the turbocharger provides and creating seal problem.

 

This is a problem related to either a mistake in installation or component failure. Adding a catch can by its own doesn't create the aforementioned problem.

 

Great thank you for this clarification!

07Softail Senior Enthusiast

07Softail

Posted
Posted (edited)

 

Great thank you for this clarification!

The engine will ultimately breath better and rings will seal better with the Oil separator.

 

RT

Edited by 07Softail
Digger3 Enthusiast

Digger3

Posted
Posted (edited)

On the Vortecs, there is a nice large area on the alternator/power steering pump mounting bracket with two pre-threaded holes. It is a perfect place to mount the catch can. The Ecotecs do not have this, but they should have an empty threaded boss in the head that could be used..

 

 

 

Front of the LH head is where I mounted my Elite. Thanks for the tip Rick! I wanted to use both mounting holes in the head but the plastic line between the vacuum pump & brake booster was in the way so I used the upper bolt hole in the head with the lower hole of the bracket. It looks tight in the photo but there is plenty of room to unscrew the bowl.

 

WP_20150122_11_25_20_Pro_zpscd711292.jpg

 

WP_20150122_11_26_05_Pro_zps5794ced5.jpg
Edited by Digger3
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Crf450r420 Enthusiast

Crf450r420

Posted
Posted

That seemed to be a case in a turbocharged engine with a bunch of boost. The catch can must have been installed without a one-way valve, one-way valve installed backward, or the one-way valve was allowed to remain open. The result is the crankcase is pressurized as much as the turbocharger provides and creating seal problem.

 

This is a problem related to either a mistake in installation or component failure. Adding a catch can by its own doesn't create the aforementioned problem.

 

I thought I heard the guy mention it was from the tube size in the catch can being to small. Probably a more standard 3/8" size like the RX for out motor when that boosted motor would need a larger 1/2" or something.

sugarjohnson Enthusiast

sugarjohnson

Posted
Posted

Anyone know what GM calls the quick connect tube that goes from the valley cover to the intake on a 6.2L. Its the one piece tube with fittings on both ends that you remove for the catch can install. I have a Rx installed but my dog chewed it up and I want to order a spare incase in need to restorte to stock some day. I can't seem to find it on any of the parts sites. Its the lower one not the two topside PCV tubes. Thanks!

Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

Anyone know what GM calls the quick connect tube that goes from the valley cover to the intake on a 6.2L. Its the one piece tube with fittings on both ends that you remove for the catch can install. I have a Rx installed but my dog chewed it up and I want to order a spare incase in need to restorte to stock some day. I can't seem to find it on any of the parts sites. Its the lower one not the two topside PCV tubes. Thanks!

 

I think it's just called "PCV Hose." When I ordered it from the dealer the guy said there were 3 PCV hoses, one dirty one from the crank case to the valley cover and 2 clean side hoses. I told him the dirty one and he pulled a diagram up on his screen to confirm the part and the order was right. Unfortunately I returned it so I don't have the paperwork with me but I'm pretty sure it was just called a "PCV hose."

sugarjohnson Enthusiast

sugarjohnson

Posted
Posted (edited)

 

I think it's just called "PCV Hose." When I ordered it from the dealer the guy said there were 3 PCV hoses, one dirty one from the crank case to the valley cover and 2 clean side hoses. I told him the dirty one and he pulled a diagram up on his screen to confirm the part and the order was right. Unfortunately I returned it so I don't have the paperwork with me but I'm pretty sure it was just called a "PCV hose."

Thanks! If you come across a part number let me know.

 

My parts guy found it. Pricey freakin tube.

Edited by sugarjohnson
Paulmart Enthusiast

Paulmart

Posted
Posted

Anyone know what GM calls the quick connect tube that goes from the valley cover to the intake on a 6.2L. Its the one piece tube with fittings on both ends that you remove for the catch can install. I have a Rx installed but my dog chewed it up and I want to order a spare incase in need to restorte to stock some day. I can't seem to find it on any of the parts sites. Its the lower one not the two topside PCV tubes. Thanks!

Just wondering how well your can's working for you on your 6.2. I ordered mine about 2 weeks ago, should arrive any day now.

 

Does anybody know if I am going to have a problem with my can if that moisture that I cant in it freezes in the winter time? That could be an issue couldn't it?

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