OK, I finally couldn't take the thought of oil film eventually coating my intake system so I pulled the CCV line from the intake to turbo.

It took me about 2 minutes to figure out how to pull the CCV tube from the intake to turbo (turn ring CCW and pull).

I then capped the intake to turbo with a thick rubber cap and band clamp. I am satisfied this is tight and will not allow any atmospheric air (potential dust) to enter.

I then re-routed the CCV line around the oil fil tube and added a 1-1/4" rubber hose down behind the wheel well. It took some electrical tape to build up the hose so it fit snug in the CCV connector - I've never seen this type before. I then zip tied this in place in three spots.

Now the $64 question...what does the harness and connector attached to the CCV tube do (I don't see a sensor, etc... all I can figure out is that the harness completes a circuit...?)

 

I did this with my 6.0. You are the first I have seen to try it on their 6.7. Keep us posted.

 

Uhhmm, okay.

Anyways I'm sure that connector doesn't mean anything on a $60,000 vehicle with perhaps millions of dollars of engineering research and design in it, other than maybe it tells the system not to coat the intake with oil.

You should forward this apparent design flaw fix to Ford engineering so they can incorporate this into their next design. Someone at the table has got to say "why didn't we think of that?".

(tongue planted firmly in cheek).

 

...sarcasm...do I detect a little sarcasm...

 

Yeah, smart *** just couldn't stay inside anymore!

 

Hey, I completely understand the comments: $60,000 vehicle, Millions $'s in Engineering - R&D, etc...

Basically Ford's hands are tied - EPA mandated.

if any oil mist eventually comes thru CCV it will foul turbo intake, cooler, etc....and degrade performance.

I adressed it for peace of mind.

 

That harness connector will be connected to a sensor that's coming in as part of a CCV change which will monitor operation of the CCV system. My understanding is that a different interpretation of an emissions rule forced adding the OBD function. The electrical harness was released with the connector knowing that at some point down the road the rest of the CCV hardware would be available. Not sure it made it for the Job#2 trucks or not, haven't looked.

No comment on the "custom" road draft tube mod.

-Paul

 

Ok, so it took me a couple of read-throughs to figure out what this thread is about. Am I to understand that the crank case is vented into the turbo intake and in so doing the vaporized oil has the potential to eventually foul the turbo? Does the crank case always have positive pressure or is there a chance that unfiltered air can be drawn into the crank case?

Brian, we need photos.

 

All kidding aside, peace of mind is never a bad reason.

 

As I mentioned earlier, this is a common mod for the 6.0 engine. The 6.0 pushed a fair amount of oil vapor into the intake stream. There is so much of the 6.7 that is very different from the 6.0 that I am hesitant to try old methods. Many early 6.0 engines were severely compromised when 7.3 tactics were applied to them. I am being cautious for a while.

Regards

 

Epic CCV runs directly into intake! Most diesels are designed to run 2" water head pressure. Also with 6.7 CCV venting directly to turbo inlet, about 3" from compressor wheel, a vaccum should occur.

The CCV oil vapor issue was common on Duramax's. So much so there were/are many cases of oil leakage out of the compressor to cooler joint!

I assume the 6.7 has tighter ring tolerances, but no matter what design all engines have blow-by hence engine oil vapor.

Glad to hear the CCV harness for now is just a placeholder for future OBD...I thought I was losing it last night when I couldn't find sensor for the CCV!

 

If you try to read between the lines, Paul's comment says a lot...

 

I certainly read between the lines in Paul's comments...my tea leaf reading, "whew, my truck doesn't have a CCV sensor/OBD to monitor this!!!"

I wish I had pictures of the oil film in the intake and compressor blades of my 2004 GMC Duramax before I did this mod at 15,000 miles (I waited too long).

Poll question: would a couple of you with 15-30,000 miles that pull trailers remove the CCV hose from your intake and shine a flashlight in there and report back? (possibly wipe a white cloth or towel in the intake tube) Just checking to see if this engine is tighter and there is no to minimal oil film.

 

I have 21000 on mine but it is too cold outside to mess with it. I am curious though.

 

Come on Rick, buck up and take one for the team! You're one of the few with that many miles on a 2011.