 | Home > Td5 > Oil Catch tank - breather hose |
 
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| sherifsalem Member Since: 02 Jan 2013 Location: Porto Posts: 96   
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Appreciate the help on "OiL Catch Tanks" being added to the breather tube of the TD5 engine to retain oil vapour to circulate in the air intake.
Are there significant benefits? My Landy is a TD5 2005 model under 50K - removed EGR One thing i read is by installing an oil catcher i would lose positive ventilation, in my case i dont have a re-mapped or chipped landy, is positive ventilation would still be an issue (If I respect the gravity hose rule) Last question fellows, do these oil catch tanks connect again to the airintake or is it a stand alone (meaning the breather hose is connected to the catch tank that collects the vapours and it ends there) no back circulation. Do you fellows recommend it.....as an adaptation that would retain significant oil vapours from circulating in the air intake Thanx Happy Travel www.thegippo.wordpress.com |
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2nd Jan 2013 7:42pm |
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| me@td5.org Member Since: 16 Jan 2011 Location: Warwick Posts: 856 
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There is a poorly designed hybrid labyrinth/cyclonic chamber in the rocker cover on the TD5. I't 2 major floors are
1. The gasket that "seals" the chambers which allows free passage between them 2. That any oil captured by the process has no where to go. So all it really does is restricts crank case ventilation. I have 2 modified covers here which I will try out to see if I have improved the design at all once I get my defender back. I will test as accurately as I can be fitting a catch tank and measure the blow by volume. The ProVent as it is both cyclonic and coalescing seems to be a good solution. Steve, where did you route the oil drain? Into the turbo oil return pipe? |
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3rd Jan 2013 1:07am |
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| Steve B Member Since: 22 May 2009 Location: Warwickshire Posts: 586  
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Hello,
Interesting thoughts on the camcover, would be good to read what you find out. I have not routed the drain anywhere, I have about 250mm of clear pipe capped off to keep an eye on any oil collected. Nothing yet, but I have only done about 15 miles so this is good 
 Click image to enlarge |
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3rd Jan 2013 8:39am |
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| sherifsalem Member Since: 02 Jan 2013 Location: Porto Posts: 96
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Thanx Steve, i am checking the Provent 200 solution.
I am looking at your picture and i am getting the idea that your breather hose has been routed to the provent filter (left) and there is another tube coming out below ( cant see where it is routed) I checked a Provent fitting http://www.aulro.com/afvb/projects-tutoria...110-a.html 1- The lower hose was re-routed again to the air intake using existing depression valve control (TOP). is that what you did? or did you re-routed to a simple canister to keep an eye on the Oil. Appreciate clarifying where the lower hose from the provent goes. Thanx Steve Happy Travel www.thegippo.wordpress.com |
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3rd Jan 2013 11:57am |
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| sherifsalem Member Since: 02 Jan 2013 Location: Porto Posts: 96
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my thoughts fellows are the following:
Cant i simply route the breather hose directly to a simple canister ( and since my landy is not chipped) i should not worry much about the positive ventilation issue Here is a link by a french guy who did just that : AUTOpsie Moteur TD5 LAND ROVER, supprimer l'EGR, améliorer en restant d'origine. 1- He routed the hose to a canister (therefore eliminated completely any oil in the circuit) 2- You need as well to block the DCV (depression control valve) with a rubber or cap (otherwise you risk damaging your turbo. i see it as a simple straight forward....or am i missing something Happy Travel www.thegippo.wordpress.com |
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3rd Jan 2013 12:10pm |
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| me@td5.org Member Since: 16 Jan 2011 Location: Warwick Posts: 856
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You must always maintain a positive crank case pressure. Not having a valve in the system could lead to vacuum being drawn in the crank case.
If not using the DCV you should put an alternative PCV somewhere in the system. Dead simple to include in a pipe between the rocker cover and your catch tank. |
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3rd Jan 2013 1:31pm |
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| sherifsalem Member Since: 02 Jan 2013 Location: Porto Posts: 96
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Hi Steve , i guess i understood something more if you can confirm that....
the lower hose that you have must go back to the valve (marked Top) correct?? What you did is in the Bottom of the Provent there is a outlet ( and this is where you placed a canister to check the oil mist depositing) i hope you can enlight me on this.... Happy Travel www.thegippo.wordpress.com |
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3rd Jan 2013 1:38pm |
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| sherifsalem Member Since: 02 Jan 2013 Location: Porto Posts: 96
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Thanx Me,
So what you are saying that blocking my DCV and routing breather hose to a canister i will lose positive pressure (ventiliation from crankcase ) something that i should defenitely avoid. I didnt understand the DEAD SIMPLE part. You mean that i should be using instead of a canister, i should use an OIL CATCH TANK between the crankcase and the DCV. can you elaborate please me. Happy Travel www.thegippo.wordpress.com |
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3rd Jan 2013 2:28pm |
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| Steve B Member Since: 22 May 2009 Location: Warwickshire Posts: 586
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Hi Shefifsalem, The outlet hose just goes under the vehicle and out the back, you can return it into the pre turbo inlet if you wish but I have this capped off. Yes, the lower pipe which the collected oil from the breather pipe exits goes into a clear pipe which is an oil collector. This could be drained back into the sump but I am guessing this wont be necessary, it will be another service item and drained on an oil change. It will be interesting to see how much it collects over time. If you do return to the sump then a valve is available to stop oil coming up the pipe into the provent and out the air out into the pre turbo pipe (if connected) and being consumed by the engine. Steve |
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4th Jan 2013 8:40am |
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| quentin Member Since: 23 Jul 2012 Location: on tour Posts: 119  
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About 50,000 klm ago I removed the intercooler from Td5 to clean it out, it had 120,000 klm from new at that stage, I poured about 250ml oil out of it.
I then installed a Provent200 "catch can" with hose and stopcock on bottom, every 5000klm I drain it and get about 1/2 a teacup of oil. This oil would otherwise be going thru your turbo (not good) and thru your intercooler coating the inside and settling on the bottom, and gunging up your MAP sensor. a few weeks ago I took the intercooler out again to install a Allisport job and happy to say there was NO oil inside the old intercooler after 50,000 klm - the Provent REALLY works. heres some pics of my install on this AULRO page (Im banned on there at the moment) http://www.aulro.com/afvb/90-110-130-defen...ost1813668 happy new year |
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4th Jan 2013 11:08am |
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| sherifsalem Member Since: 02 Jan 2013 Location: Porto Posts: 96
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Thanx you all for helping me out.... true LR enthusiats
So far from all what i read Provent 200 is a more sophisticated solution for filtering oil vapor than a normal oil catch Tank in Ebay. the superiority of mechamism and filtering really cope better with our TD5 turbo charged diesel engines. An oil catch tank will as well and do the job but not as good as provent 85%-90% filtering....mist will continue to pass to the airintake. (looks like a fast half solution) Maybe be you wont feel improvement in the engine but this will sure drastically eliminate the oil vapour in the air intake ( you will get rid of sludge that is if you have removed your EGR as well) As for the pretty basic setup of taking out the breather hose and routing it to a canister and just blocking the Decompression control valve......you will affect your crankcase positive ventilation ( i dont know how serious this is but looks doubtful) my 2 cents Happy Travel www.thegippo.wordpress.com |
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4th Jan 2013 1:03pm |
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| Steve B Member Since: 22 May 2009 Location: Warwickshire Posts: 586
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That's pretty much it, don't worry about PCV. Ideally you want negative pressure in the crank case, the less pressure the better.
The PCV just helps regulate gasses going back into the inlet by creating a positive pressure before the PCV opens at a preset pressure and purges the gasses in a regulated fashion into the inlet. Pretty sure the TD5 does not have such a valve, I just chucked it in the bin. Another positive of deleting this return is that should you have an engine problem for example 'lots of diesel in the oil from a cracked head' then the engine will not be able to run on its own oil until destruction. Did 50 miles today, much better than the cheap eBay tank. The cheap tank probably did very little, you could smell the breather. Now there is nothing, nothing in the drain pipe either. Quentin's information is pretty solid. Definitely not worth draining back into the sump. Steve |
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4th Jan 2013 8:57pm |
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| bob neville Member Since: 30 Apr 2009 Location: Marbella Posts: 3247  
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Steve
Where did you get your Provent from ? All that I have found so far are in Aus or the US. Bob 2015 Jaguar XE240 R Sport - goes like ....... !! 2013 Defender 90 CSW - sold 2009 Defender 110 Double Cab - sold 2001 TD5 90 CSW - offroad project - sold to a forum member 2011 Porsche Boxster - for the sunny days ! |
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4th Jan 2013 9:40pm |
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| Steve B Member Since: 22 May 2009 Location: Warwickshire Posts: 586
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I'm afraid I lucked in to 1 new old stock.
Here do them but very £££. http://inlinefilters.co.uk/index.php?main_...s_id=21884 |
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7th Jan 2013 9:47pm |
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