• Welcome to The Truck Stop! We see you haven't REGISTERED yet.

    Your truck knowledge is missing!
    • Registration is FREE , all we need is your birthday and email. (We don't share ANY data with ANYONE)
    • We have tons of knowledge here for your diesel truck!
    • Post your own topics and reply to existing threads to help others out!
    • NO ADS! The site is fully functional and ad free!
    CLICK HERE TO REGISTER!

    Problems registering? Click here to contact us!

    Already registered, but need a PASSWORD RESET? CLICK HERE TO RESET YOUR PASSWORD!

CDR valve relocated to stop oil suction......

deejaaa

deejaaa

Diesel Beginner
Messages
1,719
Reaction score
621
Location
Texas
had an extra 6.2 oil fill tube, not sure if it was military or not, the kind that has the extra nipple on it. had originally used it for the drain for the oil bypass filter but read somewhere that it could be used for the CDR. i still need to clean the old oil off the turbo hose but i think it got rid of the dripping oil when i had it vented to the road. put 240 miles on it so far with good results. there was one for sale on here but don't know if it's still there.
DSC01523.jpg

DSC01522.jpg

DSC01521.jpg
 
bison said:
Diff horse,same shit IMO
Click to expand...

Simon, Says!!!,.....;)

You do have to admit, if we were ever to run CDR's, I think that would be a good place to put them though.

I found a "better place" for mine, -the same place my PMD went.......
 
I ran a similar setup for a while. It seemed to work fine. I have since gone back to the original location on the valve cover. I can't say the oil fill vs valve cover made much difference. BTW, if say someone wanted a really slick modified oil fill tube with a vent like this one but with the later taller fill and screw on cap, you never know, there might be one for sale in the classified ads. :D
 
Ratman said:
Simon, Says!!!,.....;)
:hihi:

You do have to admit, if we were ever to run CDR's, I think that would be a good place to put them though.

On both covers would be better(spread the load)

I found a "better place" for mine, -the same place my PMD went.......[/QUOTE]

I lke my PMD :kiss:
Click to expand...
 
deejaaa said:
had an extra 6.2 oil fill tube, not sure if it was military or not, the kind that has the extra nipple on it....
Click to expand...

Less oil splash there for sure. Did you plug the valve cover?

BTW, clean your air filter, it'll help your situation.
 
Looks like your orange tube is throwing the same amount of oil around as mine is all the way back to the firewall...

The 6.2's had a splash shield around the timing chain. A lack of this part may influence the results.
 
For the record, I just unplugged my CDR and left the grommet in my valve cover. It's not making a mess, -probably because I don't have a lot of blowby.

I still have that wad of metal-wool in the valve cover baffle, -and honestly, it seems to be doing the trick for mine.

I realize the CDR debate is still alive and well, but this is what is working for me.
 
Someone please in small words explain a CDR. Explain venting to the atmosphere also and I have seen posts that talk about venting into a can to catch the oil if any drips. I am slightly confused.
 
CDR routes the Oil vapors from blow by to the intake pre turbo and burns it off through the engine. The turbo pulls the vapors from out of the engine.

Venting to the atmosphere means pulling the CDR out of the Valve cover and shoving a hose in it so the oil vapor flows at will to the ground though the hose. Some people put a catch can at the end of the hose.

That is how i would describe it but that might not be 100% correct just 95%
 
3500GMC said:
Less oil splash there for sure. Did you plug the valve cover?

BTW, clean your air filter, it'll help your situation.
Click to expand...

VC is plugged. i am getting a diff filter, hopefully relocate it lower for cooler intake. need to make a run to the JY Sat.
 
WarWagon said:
Looks like your orange tube is throwing the same amount of oil around as mine is all the way back to the firewall...

The 6.2's had a splash shield around the timing chain. A lack of this part may influence the results.
Click to expand...
the oil on the tube is the old stuff and i'm not even sure if this is making a diff. i need to clean it all off to tell. i have an extra splash shield from a 6.2 in the shop and will put it on whenever i need to remove the cover. i know that there are no more oil drips on the driveway compared to when i had it vented to the road.
 
Thanks Bison now I got it. My CDR stays in the valve cover but I run a hose from the CDR to the ground or a can so I dont spot the driveway. y the way congrats on being a Zillionaire!!!!!
 
bison said:
This is the easy way to vent the CDR to the world.
Been this way for near 100 K.
Click to expand...

HMMM.... That would be easier but isn't the CDR only "Open" when the turbo pulls air? That is why I say a hose with some sort of male to male barb in one end stuck in the grommet would be a better way to vent.

I am not really looking to argue about it or anything, I plan to use my CDR ran the way it was put by the factory with a provent added if blow by is THAT BAD.

Everyone has their own way of doing things and I support each way if that makes the user happy.
 
WarWagon said:
Looks like your orange tube is throwing the same amount of oil around as mine is all the way back to the firewall...

The 6.2's had a splash shield around the timing chain. A lack of this part may influence the results.
Click to expand...

Actually 6.5 NA's had the shield as well, not just 6.2s

GEPfrontcover.jpg

Here is the shield
 
tanman_2006 said:
HMMM.... That would be easier but isn't the CDR only "Open" when the turbo pulls air? That is why I say a hose with some sort of male to male barb in one end stuck in the grommet would be a better way to vent.

I am not really looking to argue about it or anything, I plan to use my CDR ran the way it was put by the factory with a provent added if blow by is THAT BAD.

Everyone has their own way of doing things and I support each way if that makes the user happy.
Click to expand...

You're certainly right about everyone having their own way of doing things. I have heard from several that the CDR was designed to promote negative crankcase pressure. I do not understand how that is possible unless there is vacuum present at the turbo inlet. The only way vacuum would be present at the turbo inlet is if there was a restriction through the air cleaner (which for most of us would be a non-existing condition). I guess I am at a loss in terms of understanding the benefits of having this little gold colored can handling my crankcase ventilation duties.

Looking at the way it is designed, it makes perfect sense as a way of containing/burning the crankcase vapors, and also makes sense as an emission control device.

However, I do not care one bit for the way the oil vapor skunks up the turbo inlet and manifold, -therefore mine is outta there.

I have no oil leaks as a result of removing mine, and I have a really clean intake and turbo to boot. I am going to add a barb and hose, -just to get it out of the engine compartment, -that certainly wouldn't be a bad idea. I am totally subscribed to the ProVent idea, -I think that would give the best of both worlds, -and help to keep the vapor-mess contained somewhat. I seem to recall several years ago now where either GMCTD or Quantum Mechanic fabbed up a veturi in an exhaust collector (with a hose going to the valve cover) to promote negative crankcase pressure, -I don't know if that worked or not, but the idea seems totally feasible.

Last but not least, as all of us 6-fivers know, LESS PARTS = LESS WEIGHT,...-and LESS WEIGHT = MORE SPEED :hihi:
 
You must log in or register to reply here.
Back
Top