Another ProVent/CCV option?

0311_DoC · **Posted:** Sun Dec 09, 2007 3:41 pm

Well I wish I lived somewhat close but do not. Or Id let him poke around the engine.

TheTDIWagonGuy · **Joined:** Fri Dec 07, 2007 11:00 pm **Posts:** 3

I will try to take a look around here and see if I can find one. All I need is 5 minutes and I could put one together.

Scott Langohr · **Posted:** Wed Dec 12, 2007 8:25 am

What would something like the air compressor oil separation filter at the grainger site do? It has a metal bowl with glass view and is rated for 175 degrees. We have these on our construction job site compressors and they filter out a lot of oil and water. They are not as cheep as 19.00 though. Granger has 4 pages of filters to choose from though.

http://www.grainger.com/Grainger/items/4RA16

dritchie · **Posted:** Wed Dec 12, 2007 10:37 am

Didn't see one in the picture, but shouldn't this have a pressure relief valve of some sort? If it was to clog, not likely, but it could happen, it would not be good for the seals.

Dave

chrispitude · **Posted:** Wed Dec 12, 2007 11:15 am

TheTDIWagonGuy,

So from everything I've read on the TDI forums, you build a great CCV filter! It's just a matter of finding a form factor that fits our CRDs well.

This is where I confess I'm not much help. I have not really done anything with our CRD since it's my wife's daily driver and she frowns upon me taking it from her to "play with it." I've not installed any CCV filtration in our CRD, and I haven't even done the EHM. Folks, what form factor and installation location would work best? I see a nice vertical space next to the radiator. I think I could even fabricate a mount for it there, and I could add a drain valve and tube to hang down if desired.

TheTDIWagonGuy, are there any drain valve or drain tube possibilities with your filters? Do you have any pictures of your filters, unassembled or assembled, that might serve as inspiration for us CRD folks to get something rolling?

I have a feeling there's not more traffic on this thread because I'm the last guy who hasn't installed some kind of filter...

- Chris

flash7210 · **Posted:** Wed Dec 12, 2007 11:34 am

I made this...

In through the bottom, out throught the top. ChoreBoy and white filter
material packed in between.

I later change it a little by adding an elbow inside to direct stuff more to the
bottom.

Threeweight · **Joined:** Mon May 14, 2007 5:57 pm **Posts:** 679

dritchie wrote:

Didn't see one in the picture, but shouldn't this have a pressure relief valve of some sort? If it was to clog, not likely, but it could happen, it would not be good for the seals.

Dave

The CCV is a very low pressure system. Most folks don't even put pipe clamps on the hoses.

UFO · **Posted:** Wed Dec 12, 2007 2:15 pm

I initally used the vinyl hoses, but they got so soft under the hood they started to leak on me. I replaced them with 3/4" heater hose. And maybe when I get time to lift the hood on my CRD, I can take pictures, but it's freezing here.

dritchie · **Posted:** Wed Dec 12, 2007 5:36 pm

Threeweight wrote:

dritchie wrote:

Didn't see one in the picture, but shouldn't this have a pressure relief valve of some sort? If it was to clog, not likely, but it could happen, it would not be good for the seals.

Dave

The CCV is a very low pressure system. Most folks don't even put pipe clamps on the hoses.

Sure it's low pressure when it's venting properly, but if it plugged up, the pressure would build pretty fast. that blow by gas has to go somewhere.

Dave

gmctd · **Posted:** Wed Dec 12, 2007 6:38 pm

Yep - ours did that - the drain hose, altho clamped, full of oil, blew off, got up against the downpipe, melted the then-open end - coulda been worse, had it blew off under a load, the hot oil flaming up on the downpipe at ~900deg EGT - needless to say, it's securely clamped now - and the Provent does have a pop-off vent - I really suspect the clamp was not cinched down properly during the original installation.

I discovered it when #2 son's mom started complaining about all the black spots in the garage and the driveway.

Turbo Tim · **Posted:** Wed Dec 12, 2007 10:46 pm

Yup, me too! I used to use those clear hoses until mine blew off. Not anymore.
Go to a hydraulics store and get a pump suction hose. It is very flexible but has a wire spring built into the hose. You can tie it into a knot, and the inside diameter will always be ¾ inch. High temperatures will not affect it. I think I bought 6 feet for $15.

Also the oil won’t bother it….

Threeweight · **Joined:** Mon May 14, 2007 5:57 pm **Posts:** 679

dritchie wrote:

Sure it's low pressure when it's venting properly, but if it plugged up, the pressure would build pretty fast. that blow by gas has to go somewhere.

Dave

If the hose blows off and lands against something hot like gmctd, yah, thats a problem. If it just slips off, you'd be running the elephant hose mod. Just use hose stock ment to handle high temps and oil and it will be fine.

chadhargis · **Posted:** Thu Dec 13, 2007 4:25 pm

What the heck am I doing wrong then?

I'm using vinyl braided hose to and from the filter and standard vinyl hose from the drain. I have the drain hose zip tied to the wheel well so it stays off the down pipe. I have a barbed to threaded fitting on the drain tube and I screwed on a threaded PVC cap. I empty it when I do an oil change. Typically only a ounce or two in there. My CCV hose is black and dirty, and the return hose is clean, so I know it's working.

I've never had anything blow off. The pop off vent in the Provent works on very low pressure, so if a hose were to get kinked, it would simply blow oil vapor out. If you have enough coming out to make a fire, then you've got some other issues, like perhaps an overfilled crankcase.

The factory CCV has a blow off too. You can snap off the top of the puck and take a look.

gmctd · **Posted:** Thu Dec 13, 2007 6:24 pm

Sounds like yours is correctly installed and finished out - ours was done by someone when the p\o had it - I've since reworked it with all new hoses and fittings from loewe's - but it still pumps a lotta oil - reckon I needta take a look at the ccv puck, now, as it's a centrifugal filter and should be removing some of the oil up there

Also got in mind to drill\tap the oil pan next oil change, put that oil back where it belongs

Turbo Tim · **Posted:** Thu Dec 13, 2007 8:41 pm

When I had those clear reinforced hoses on mine, I noticed that there was an oil film on top of the engine. Then one day it popped off. Then I figured out what was happening.
The under hood temperatures were so hot that the hoses would collapse. Depending on where the turns were and how it was routed, it had no choice but to collapse and kink.
That’s when I went to the hydraulic suction hose. No more problems.

chadhargis · **Posted:** Thu Dec 13, 2007 9:16 pm

Yep...they will get hot and kink if you bend them too far. I ended up cutting out the side of the engine shroud so the hose didn't have to bend under it then back over the CAC hose. Then I used safety wire (since I have plenty of it from wiring my track bike) and I used my safety wire pliers to squeeze the hose so it doesn't kink.

I made sure the hose from the CCV puck runs uphill so any big mass of oil drains back to the CCV. I have a little bit of oil on my valve cover, but not much. Nothing on the hoses, mainly because they are siliconed and clamped together. I don't think anything is getting past.

chrispitude · **Posted:** Wed Dec 19, 2007 1:40 pm

Hi all,

I have been emailing with TheTDIWagonGuy about how to design a CCV filter for our CRDs. I am leaning towards using the space between the radiator and the airbox. There is a nice space there for a 10" long, 2" diameter cylinder. The inlet would be 4" up from the bottom, and the outlet would be 1" down from the top. The bottom inlet would probably be an upward right angle barb, and the top outlet would be a straight barb. We would have some sort of drain on the bottom, but have not worked out the details of that yet. I also have not figured out the best way to mount it in there. I'd prefer that it is rigidly mounted, rather than just letting it sit in the space. I can get two mounting straps around the tube, but I am not sure where the straps would attach.

Does anyone have any thoughts on such a setup? I have never installed a CCV in a CRD and these are just my thoughts from looking under the hood. Obviously, those of you who have installed filters will have more experience on what works well and what doesn't.

Thanks!

- Chris

dgeist · **Posted:** Wed Dec 19, 2007 2:06 pm

chrispitude wrote:

Hi all,

Does anyone have any thoughts on such a setup? I have never installed a CCV in a CRD and these are just my thoughts from looking under the hood. Obviously, those of you who have installed filters will have more experience on what works well and what doesn't.

- Chris

I'll bet having it there will asssist with condensation (cool air flowing over the chamber of heated oil mist). As far as mounting, I'd zip tie it first for proof of concept then worry about firmer mounting after you know the location works and doesn't cause problems.

Dan (P.S. My provent is STILL zip-tied in place after 4000 miles...)

Threeweight · **Joined:** Mon May 14, 2007 5:57 pm **Posts:** 679

Anyone have any luck working developing this mod?

UFO · **Posted:** Mon Jan 28, 2008 3:35 am

I'll see if I can take some pictures of my home-made CCV. I used black heater hose and a large PVC reduction T filled with a stainless dish scrubber. I plumbed the drain with vinyl with a drain valve. Three months, so far so good. I didn't document any of it as I thought I was just gambling.

Another ProVent/CCV option?

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