I've heard a little about routing the CCV into the exhaust and have been thinking about it since I put my new exhaust on and was wondering if any of you had it this way or what your thoughts were.

 

Gene has proof that putting the CCV to the exhaust will cause back psi and will start blowing seals. I don't know for sure about this because I have not done the CCV mod.

 

I currently have my CCV routed into my exhaust. Knock on wood, but I have not seen any problems as of yet. Due to recent talk on here about creating back pressure, I am going to be changing it very soon. If I had it to do over, I would not put the CCV into the exhaust.

 

I am actually beginning to rethink the open ended tube concept myself. I have the huge liquid trap, and am considering inserting it back into the intake again just to get rid of the smoking tube. Overall, though, it's a very low priority for me to take any action on that as of yet.

To the question... IIRC, Gene's proposal regarding the back pressure was that it CAN happen, and not that it always does. I believe it is under heavy towing loads and/or hard hitting throttle activity that sparks the oportunity. That said, the potential itself is enough for me to leave well-enough alone and recognize that an exhaust insert is an option that carries a certain element of risk along with it... a risk I am not willing to take.

 

Thanks guys! Dont think I'll be going that route either. I'll just move the catch can I got now to a better place, cuz it looks kinda ghetto now!

 

I'm not against the open ended design simply because that is what is used on farm tractors and bigger trucks, including IH applications of the T444E, or Ford's 650 models.

I don't remember exactly what Gene said either, but I would think the exact opposite is true. The heavy load on the engine should create enough flow through the exhaust to create a vacuum in the CCV hose and reduce back pressure. I would be more afraid of idle or low rpm deceleration since the reduced flow might tend to wander back up the tube. I do know it doesn't take a lot of back pressure to start causing problems.

Of course the RPM thing is all speculation on my part. I do agree keeping the CCV out of the exhaust would be a wise move.

 

I think you've talked me into admitting I may well have remembered the scenario incorrectly, Chris. I know about the open ended hose not being a problem... I just sort of feel a little "bad" every time I back up somewhere and see the small cloud of smoke. No major issue, though.

 

I'm a little confused on this subject. Isn't the race cars out there using the exhaust for the CCV? I've noticed on most cars they have a stainless line from the CCV down to the exhaust. I would think it's not any difference on a diesel. I've ordered the kit to run the CCV and was planning to weld a stub on the exhaust to run the hose... ...if it doesn't get too hot for the rubber. Just my thoughts on the issue.

 

U know you wanna do this...

 

Has anyone considered maybe using the venturi effect that would be similar to the 6.4 liter exhaust? If this style of venturi was placed under the truck all oil fumes would be "drawn" into the exhaust. If you wanted to put it nearer the tip just run metal tubing along side the exhaust pipe.

 

i did just that recently. i don't know if its the synthetic rotella oil, or what, but mine was smoking A LOT more than i wanted to put up with. i like to ride with the windows down if its not too hot, and the smoke was bothering me inside the cab, even when i had the hose exiting the right rear of the truck. i have a catchcan just below the driver seat, then the hose is routed back up to the intake. specifically, i removed the filter minder from the 6637 filter, since it's never budged, and plumbed the CCV into the opening.

i did this just a few days ago, so i need to monitor the trap as well as the inside of the intake to see if it is getting nasty. i couldn't stand the smell of the fumes, and i tried just running it back to the outside of filter in hopes that the intake would pull the fumes through the filter. it didn't work, and if i turned on the AC (not max AC) the fumes came into the cab. since i don't want to asphyxiate myself or my passengers, i ended up plumbing it as mentioned. i would have just reused the stock CCV coupler, but i have a homemade intake pipe that i didn't want to lose. i'm hoping since it is at the end of the 6637 filter, the suction won't be great enough to suck out more oil. i'm thinking the trap (which has a mesh screen in it) may be a small restriction, and maybe the intake can provide just enough suction to counterbalance it. we'll see how it works. i need to snap a few pics, but here's what i used for my trap. i has a fine wire mesh screen inside

http://www.tractorsupply.com/wcsstor...00/2106991.jpg

 

Can someone tell me exactly what the smoke is? Is it burnt oil? My reason and my reason only for not doing the CCV mod is because with the ULSD we have to use now, I would think the smoke will add a little lube to the air going into the cylinder. I know it blows out oil, because I see lots of engines with all the oily boots. I don't worry about that because I keep my engine clean. I may be totally wrong on this. But thats my story and I'm sticking to it. lol

 

Don't do it!! I did and now I don't. I argued with Eugene repeatedly about this. (Damn engineers think they know everything LOL) I used a check valve and a venturi tube, did everything right. I have been fighting a valve cover oil leak for almost a year, resealed twice, new gasket, proper torque, locktight, you name it I tried it. Finally I diconnected the CCV mod from the exhuast and the leak stopped. Just save yourself the hassle. Don't install the Mod into the exhaust. Barney

 

Gene proved that it *does* happen by measuring *POSITIVE* CC pressure at the oil cap on several trucks. It's not a theory, it's been proven. I was going to do it as well, but not after seeing that discussion. IIRC, it *can* work with a gasser because the exhaust pulses are undisturbed as they traverse the exhaust pipe. After pushing through a turbo, they're no longer distinct pulses -- just high pressure flow that wants to push back up the "venturi" that really isn't.

 

Rick. It's basically oil vapor, which is why in condensed back into oil and leave the mess. I never thought about any lubricity benefits provided from this.