TDI Crankcase Ventilation Filter Costs and installation
- Thread starter ROVERTTDI
- Start date
Digital Corpus
Top Post Dawg
When I've read up on catchcans and the CCV system, one question I've not seen asked or answered is this:
The oil that is then retained, is it safe to put back into the engine?
The oil that is then retained, is it safe to put back into the engine?
dieselfuel
Veteran Member
The oil that is recovered is tarnished with water and blow-by exhaust vapors. It would have its lubricity factor lowered and thus not perform as well as fresh engine oil.
Additionally, the amount of recovered oil is so minimal for thousands of miles, it simply would not have any excessive amount worth value.
Cheers,
ROVERTTDI
Additionally, the amount of recovered oil is so minimal for thousands of miles, it simply would not have any excessive amount worth value.
Cheers,
ROVERTTDI
Digital Corpus
Top Post Dawg
Thank you Rover.
No, I'm not that cheap but it solves the simple disposal concern since it's not burned off in the engine.
No, I'm not that cheap but it solves the simple disposal concern since it's not burned off in the engine.
josh8loop
Veteran Member
- Joined
- Sep 15, 2009
- Location
- Vero Beach, Fl.
- TDI
- 2002 VW Jetta TDI Manual(performed 01M to 5-speed swap) - 183,000 miles and climbing!
Other vehicle manufacturers like BMW have no issue draining that oil back into the crank case. I don't see any issue either provided there is no debris from the new hoses etc that have collected in the oil-a simple inline gasoline oil filter on the drain line would take care of this. I thought one of the goals of something like this is to reduce oil consumption/oil refilling?
By the way, water vapor will stay in the vapor form provided that it remains hot enough to stay that way. The stock CCV system keeps it warm enough to keep condensation of water vapor at bay. Catch cans will allow water vapor to condense if they are cool enough-even still small amounts of water that would drain to the oil pan will instantly flash to steam and eventually find there way through the engine causing no issue to the engine oil. I personally wouldn't be worried about returning the oil to the crankcase provided it's filtered as mentioned above.
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By the way, water vapor will stay in the vapor form provided that it remains hot enough to stay that way. The stock CCV system keeps it warm enough to keep condensation of water vapor at bay. Catch cans will allow water vapor to condense if they are cool enough-even still small amounts of water that would drain to the oil pan will instantly flash to steam and eventually find there way through the engine causing no issue to the engine oil. I personally wouldn't be worried about returning the oil to the crankcase provided it's filtered as mentioned above.
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josh8loop
Veteran Member
- Joined
- Sep 15, 2009
- Location
- Vero Beach, Fl.
- TDI
- 2002 VW Jetta TDI Manual(performed 01M to 5-speed swap) - 183,000 miles and climbing!
By your mileage vs months numbers it looks like you are basically saying you have collected .5 ounces in 3 weeks(approx 1000 miles). That seems like a lot to me-Especially with a new installation. I know that newly installed systems generally need some time for the hoses and cans to become wet enough to allow effluent drainage. I'm wondering if a certain fraction of that .5oz is from water vapor that has been condensed by your relatively cool catch can?
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A5INKY
Vendor , w/Business number
Looks to me like a solution in search of a problem. I have been all through the BRM several times and am not convinced CCV vapors are any kind of a problem. No matter, I am sure you don't care to convince me. Just sayin'.
I will offer from experience that mounting to the block where you did your bracket's days are numbered. The vibes will fatigue that bracket to the point of failure in short order. Some triangulation might buy some more time.
Cheers!
I will offer from experience that mounting to the block where you did your bracket's days are numbered. The vibes will fatigue that bracket to the point of failure in short order. Some triangulation might buy some more time.
Cheers!
The bracket is made from high strength stainless steel used by local industries for electric pumps and turbines. Furthermore, I have installed a cross member to add additional support and have made a footing on the base of the bracket that secures tightly around the engine mount that protrudes from the BRM.
DPM
Top Post Dawg
3/8" hose? That's likely to add appreciable CCV backpressure at some time; expect blue smoke...
josh8loop
Veteran Member
- Joined
- Sep 15, 2009
- Location
- Vero Beach, Fl.
- TDI
- 2002 VW Jetta TDI Manual(performed 01M to 5-speed swap) - 183,000 miles and climbing!
oilhammer
Certified Volkswagen Nut & Vendor
Me too, since I have yet to see a BRM that needs its intake "cleaned out". Come to think of it, I've never had to clean out any PD's intake.
And with ULSD, we don't really clean out VE intakes anymore either.
FXDL
Veteran Member
I had a home made one on my old 2001 ALH TDI Jetta that I gave the car to one of my kids but took off the oil sep., as no more soot from the egr as it has been blocked off. I ran 3/4 inch clear plastic hose with webbing in it. The clear was good to see how much crap was passing. In the winter I would insulate both the hose and the seperater as some 20 below C will freeze water real fast. The restriction that will give the most problem is the heater at the return at the intake which has a very small hole which is going to be the main restriction and not the hoses. I do agree that 3/8 id hose will add to the restriction of your oil seperater unlee was very short run but as in the pictures it is not so if room run a bigger ID hose would not hurt. My old unit I will use it on my 2006 BRM now and if I can increase the hose size to 1 inch if room, although 3/4 would be ok. The unit I used was made out of plastic and was for filtering water for before a pressure washer and has if I remember 3/4 NPT inlet and outlets. It was from Princess Auto and has a metal screen inside it that I filled loosely with brass type steel wool and it worked very well. When I would take apart had lots of oil and water in it, in fact was full just about every time so the drain will be very good so as to save time having to remove taking apart, cleaning and putting back together, when draining would be fast and easy. It had no drain but I think I will tap and install one and install on my car. The hoses would supported it on the 2001 TDI with foam padding also were needed to stop any wear to it or otherwise. So should work like wise on my 2006. The unit cost some 20.00 dollars, plastic fittings and clear hose, all SS clamps which was some 20 more. The BRM may not make a lot of soot in the intake etc, but the oil seperater would think just be much better and insure it stayed clean. The BRM and the ALH were not that great of a design when it comes to the PCV and for that matter all the VW diesels here suck when it comes to their PCV systems. My 2 cents or 1. Like what was said, take your time and make changes as you go if needed and work safe.
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James & Son
Veteran Member
I would suspect it might improve catalytic life now that the switch to CJ4 oil is common, as shown the consumption does add up. From the stand point of vibration, perferably mount it to the fan shroud. But if you want to try, the center point of the engine around the oil filter housing seems to be less effected and keeping the mount as close to the engine as possible could help( even still it could be the filter inside may disintegrate) I have to agree with A5Inky that even with your best efforts the engine mount is not the way to go if you have a choice.
Josh,
You seem to know quite a bit about this already but have you ever attempted this project?
Your keen insight seems expertise. I suggest you do this modification instead of shutting down interesting ideas.
Perhaps you should remain focused on getting that additional 2.1 MPG out of a risky project like modifying your thermostat.
All I can say is this design works, there is no more oil in the intake hose and booster hose from intercooler to EGR. The running inspections show vapors (with oil removed) are freely travelling through this system and are not restricted as much as you think it is.
Furthermore, my car has been fully inspected for the final warranty check and the dealership was kind enough to show me the inside of the intake manifold with their VW mechanic flex-camera...it was exceptionally clean, only evidence of soot formation not heavy oily deposits there was before! Seven months earlier, the vehicle required replacement of the EGR valve since it had a 60% clogged manifold from the oily mist and EGR soot.
I just finished driving 4000 miles on a recent trip and again, no evidence of oil in the intake hose and booster hose. Moroso was successful in capturing a couple of ounces of oil.
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DPM
Top Post Dawg
just wait for your turbo seals to fail early because of crankcase pressure. BTDT...
2footbraker
Veteran Member
You seem to think you are the first to have done this on a tdi. You realize this has been done many times in the past on tdi's right? And is much less common now due to the previously mentioned usage of USLD and it's dramatically lowered exhaust soot.
I myself used to run a provent 5 years ago but tossed it due to freeze-up issues and the fact that intake carbon build-up is virtually a non-issue with today's fuels.
BTW, I hope you were being sarcastic when you said your "mod" is a "work of art".
I myself used to run a provent 5 years ago but tossed it due to freeze-up issues and the fact that intake carbon build-up is virtually a non-issue with today's fuels.
BTW, I hope you were being sarcastic when you said your "mod" is a "work of art".
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Footbraker from Saskatchewan,
As an observation, it appears you have control/insecurity issues always being overly defensive.
The real question is, who cares? Some people just have way too much time on their hands complaining.
I am satisfied and that's all that matters; definitely not your opinion.
All the other posters,
Thank you for your input, it is valued.
Best of luck on new modification endeavors and achieving the full potential of your VW.
Cheers!
ROVERTTDI
As an observation, it appears you have control/insecurity issues always being overly defensive.
The real question is, who cares? Some people just have way too much time on their hands complaining.
I am satisfied and that's all that matters; definitely not your opinion.
All the other posters,
Thank you for your input, it is valued.
Best of luck on new modification endeavors and achieving the full potential of your VW.
Cheers!
ROVERTTDI
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