Well this weekend I decided I wanted to do this PCV mod before I put too many miles on her and coat the turbo with oil. Too late really as I pulled the PCV apart it was coated with oil, which is now on the turbo impeller.

I just capped off the fitting on the intake, and cut the hard PCV line and tee'd off that with 5/8" heater hose hanging down aimed at the ground near the frame rail. Similar in concept to my Cummins.

While I was at it I blocked my EGR with the kit I bought from Kennedy that has the finger stick. GREAT product, and was a snap. No more soot in my system.

I'd like to know how the environmentals think that sooting and oiling up an engines intake system is suppose to make it run cleaner.:rolleyes:

:nopics:


GOT ANY PICS. Been thinking of doing the same.

:nopics:


GOT ANY PICS. Been thinking of doing the same.
:exactly:

I'll get some tonight!

Yeah, maybe a little mini "DIY" would be nice :)

If you don't want oil on your driveway don't do this mod this way.

Worst case, if it drips oil on the driveway is to put an oil/water seperator on it at the end of the line.

There should not be that much oil coming out of it.. if there is, that is even more reason to get this mod done.... I'm not sure what GM was thinking.

Every Cummins engine in existance has this kind of vent. I will report if there is any leaks. So far, there is not.

Just an update.

300 miles of driving and no oil exiting from the line. I can stick my finger in the hose and it is dry inside.

Sorry no pics yet can't find my digital camera... around somewhere.

So if there was no oil in the line...why did you have oil all over your turbo?
ac

Good question!! Don't know.:confused: Maybe had something to do with the vapor? Hard to say.

The stock LB7's came with a tube that just dumped to atmosphere.....after some time it would put a lil coat of oil down below.

I would say that becasue stock in the LBZ its in the intake tract and its getting sucked on. I would realy like to score me a oil seperator and put it inline and that way its still sucking yet its not coating my whole intake tract with oil. Only hold up is I cant find a sealed seperator(just inet and outlet, no vent, still under vacume from the intake) that looks like deccent quality and isnt an arm and a leg.

Phil if you find one let us know that is the way I wanted to do it, but I haven't looked into it yet.

Just an update.

300 miles of driving and no oil exiting from the line. I can stick my finger in the hose and it is dry inside.

Sorry no pics yet can't find my digital camera... around somewhere.

Give it a little time, the oil will come. Mine stays relatively dry until I run it hard or tow. I zipp-tied a rag at the end of my vent hose, which I change after every couple of oil changes.

The reason he isnt getting oil is because now it isnt under a vacuum. This is not the desired case. A vacuum in the crankcase has been shown to aid in the production of more horsepower on numerous vehicles. If you do not like the concept of some oil vapor running over your turbo or into your intercooler you should use an oil separator. I found one at the local Harbor Freight for $3. Plumb that in between the crankcase and the intake. You want to maintain that slight pull the intake gives you.
ac

I have wondered about that as well, and asked the question in this post... http://dieselplace.com/forum/showthread.php?t=85417

I have not noticed any effect one way or the other with the crankcase vented to the atmosphere, but would assume that the standard PCV does offer some good (aside from lubricating your turbo:)).

I took a look at the PCV on my LBZ. How is everyone adding oil separators? That line appears to be rigid plastic.

Anyone have pics?
ac

I also would love to see pics. I installed a boost gauge recently and after 15000 miles my intake is coated in oilly crap.

The LBZ has rigid plastic, an easy way to help you out is go to the dealer and purchase pcv tube for an LLY, It comes with steel ends and rubber between, You cut the rubber hose off and install your vent hose onto the steel fittings and route the vent hose to the desired location.

Cant post pics since I posted them in another link go there and look at post at bottom #80 http://www.dieselplace.com/forum/showthread.php?t=66728&page=8

I have not fully investigated this yet, but I am planning on a seperator to maintain negative pressure in the crank. Pretty much right in line with what ratlover posted. I know on the race engines we actually use a modified air pump to create negative crank pressure (ring seal). So based on that, I was checking out Stefs (www.stefs.com) and there it was, air to oil sealed seperator.... BUT NO PICS. Plan on calling tomorrow to get some detail.

Keep us up to date