How-To: Install Catch Can on GMT900 L9H 6.2L.

[Brendan Cosworth]

I purchased an E2 catch can for my 2010 Silvy 6.2L with the flex fuel L9H. I am no slouch with mechanical stuff, being able to do most with my vehicles that doesn't require a lift. Perhaps this was my downfall as I was over-thinking things but I would suggest that without clear instructions for the 6.2L and without some knowledge you could very well cut into the wrong vacuum line.

 

First, the instructions are just a cut-away of the catch can. I could not find any 6.2L L9H instructions for the E2 can anywhere. I emailed Elite Engineering and I did get a few photos of one installed, however nothing specific. I did attempt to install it last night where they showed it, under the intake on the left front, however I found a few issues with this. First there is a baffle on my intake was in the way, second is that access to the can could be problematic, and finally it was rubbing on some coolant hoses so I am not sure how you could unscrew it. There was also mention of an alternative place to mount it which is along the passenger side near the alternator. This location is clear and ultimately where I chose to mount it.

 

 

Near the first header on the back, there is a bolt that holds some plastic piece to the block, just up above that there is a vacant hole. That is ultimately where I put the can.

 

Next was figuring out what the PVC line was, I was told it was this line here from E.E. According to all my experience (the size, the fact there was a solenoid in line, and there clearly wasn't a PCV Valve) and the lack of oil smell I was very sceptical. The actual PCV line goes from the back of the block on the passenger side, up the intake, and into the intake about half way with the PCV valve attached.

 

What I was told the PCV was....

 

Build sheet from GM showing this line (729 and 730 with is actually the EVAP canister). The PCV is 716. 716 is described as "716-TUBE,PCV(DIRTY AIR). Required: 01 For: CK1 6.2-2(L9H) (2009-2010) (2009 - 2010)."

 

Source for that info here: http://www.wholesalegmpartsonline.com/showAssembly.aspx?ukey_product=2670029&ukey_assembly=372199

 

 

To remove the PCV valve I removed both the pin for the engine cover as well as the bolt that holds the plastic plate that holds all of the wire loom across the top of the engine. Reach to the back and disconnect, then at the intake manifold twist clockwise until it pops out. At that time I used a hacksaw to cut at the start of both curves using as much existing as I could for both length and consistency.

 

 

Once in, I did some routing to make it clean for me. I believe the AC evap line also runs along this route so doubt there will be any issues, I followed that, tied them together and tied into the canister. I will say that I do not like that the can isn't perfectly vertical but it isn't a lot and I don't expect any performance issues.

 

For those who have installed it you may be laughing but the inconsistent information and lack of detail on how the design happens was frustrating. Was took me 15 minutes on a 2010 RAM took me over 2 hours over 2 days and over a dozen emails back to the manufacturer. Hopefully this saves someone from a mistake that will require a new hose soon.

 

 

Cos

[brannnor]

I wanted to know the reason for doing this please Norm

[Brendan Cosworth]

I wanted to know the reason for doing this please Norm

 

What the catch can or the how to?

[brannnor]

what the catch can is for thanks norm

[Brendan Cosworth]

The really long story short is that it pulls oil out of the PCV system from getting recirculated into the engine which causes oil to build on the intake, can cause carbon build up on the valves (especially bad on D.I. engines), and can lower the octane of incoming fuel. There is lots of good detail all over the Internet that better explains this, why it isn't oem (until now with the 2017 Camaro), and people just generally arguing about it.

[RyanbabZ71]

I wanted to know the reason for doing this please Norm

 

http://www.camaro5.com/forums/showthread.php?t=347649

[GDI Tech]

Good how to for the single valve can!!

 

Good work!

[R_W]

I joined this forum specifically to add to this thread.

 

I recently installed the Elite Engineering E2 catch can myself, and in a similar location.

The PCV tube that Cosworth labeled is correct. I actually used E.E.'s "L" bracket to mount mine on the alternator bracket so that it would be perfectly vertical. I did have to file down 1 - 2 mm off the alternator bracket to make it fit as I was picturing, but the result allows for ease of reach and space to unscrew/empty the can.

 

 

 

 

Passenger side of the Alternator bracket with the bolt threads protruding out of the back:

 

 

Then the drivers side of the alternator bracket to show that full thread engagement is present (just barely) with the L bracket of the catch can installed. I'm sure thread locker could be installed to add to peace of mind about the bolt backing out.

 

 

And finally, with the cover back on:

 

[GDI Tech]

Good pics! The installation location varies through the years, and it can also be mounted to the brake booster/master cylinder bolt. The routing is straight forward on these as the vacuum barb comes out the top of the IM and pulls vapors from the rear of the driver side valve cover. Simply install with the center of can to the PCV barb on rear of drivers side valve cover, outer fitting to the intake manifold vacuum port.

 

The E2, comes with dual outlets so if you opt for checkvalves you can also tap into the suction available just in front of the TB for evacuation suction while accelerating or at WOT when there is no IM vacuum present. The E2-X comes standard with over $100 worth of AN fittings, easy 1/4 turn chromed brass ball valve to drain, and check valves are all standard (extra with all others) so that makes it a bargain even though cost is higher.

 

Good install job!