Oil Catch Cans Crankcase Pressure, Provent 200 vs Mishimoto vs Universal oil catch can
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- เผยแพร่เมื่อ 18 มิ.ย. 2020
- Are you afraid that an oil catch can will increase the crankcase pressure, spilling oil everywhere? Here is the answer! Check the description as well. If you also wondered what is normal crankcase/engine pressure, here it is.
I was really worried that my oil catch can in my turbo diesel 1.6HDi Peugeot Partner (2007; M59; ~102,000 miles or ~164.000 km) will lead to stress in the engine, i.e. increased crankcase pressure, blown seals, oil will be coming out, etc. This video is a relatively conclusive test that this particular oil catch can (copy of the Mann-Hummel Provent 200) does not increase the crankcase pressure, but others do. For example an universal oil catch can , even with steel scourers does not increase the crankcase pressure, but a mishimoto oil catch can substantially increase the crankcase pressure. The car is similar to a Citroen Berlingo and the engine is the same as in 1.6TDCi (Ford), Volvo, Suzuki, Mini, Mazda3, etc.
If you find this video useful, buy me a coffee: www.paypal.com/paypalme/morem...
All my car-related purchases: www.amazon.co.uk/shop/moremol...
The cheap Mann-Hummel Provent 200 oil catch can is MASO (amazon UK): amzn.to/2YIuJ97 or ebay: ebay.us/lpKALx
The kkmoon baffled oil catch can with the bronze filter (amazon UK): amzn.to/3B0HqQt or ebay: ebay.us/3eD5Eg and is the same as the Mishimoto oil catch can (amazon UK): amzn.to/3hK0uYn or ebay: ebay.us/rDu7rX
The universal oil catch can (amazon UK): amzn.to/3IBdA6y or ebay: ebay.us/bKkoB5
The sensor for crankcase pressure measurement is Bosch DPF exhaust pressure sensor (0-1bar) and the part number is: 0281002772 (amazon UK): amzn.to/3H1H8dp or ebay: ebay.us/6tVVqL
The videos explaining how I did the crankcase pressure measurements are here: • Reading absolute press... and here • Reading absolute press...
The arduino code is included in the two previous videos.
The new Mishimoto oil catch can that is classified as MMBCC-HF and the HF stands for high flow (amazon UK): amzn.to/2NiiY3P or ebay: ebay.us/XfrHY1, but it is quite expensive. Here is the Mishimoto website for this oil catch can: www.mishimoto.co.uk/universal... and a bit more on how they designed it: www.mishimoto.com/engineering...
The actual results are here:
Baseline (original intake, no oil catch cans) 1.55mbar
Mann-Hummel Provent 200, cheap steel filter 1.58mbar
Mann-Hummel Provent 200, original filter 1.54mbar
kkmoon (Mishimoto) with bronze filter 6.20mbar
kkmoon (Mishimoto) no bronze filter 2.85mbar
universal oil catch can no steel scourers 2.10mbar
universal oil catch can with steel scourers 2.40mbar
#HDi #CarMods #OilCatchCan
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Thanks mate, as this is something I have been thinking about when I installed a catch can on my 6L LS. This clears it all up for me now.
nice testing and explanation ..... due diligence / research is critical in ANY subject matter ,,, thank you ,,, i am now a subscriber based on this video
I've heard bad and good thing about catch cans, especially about the pressure in the engine. Your videos is great and a wealth of information.
The best video and explanation I’ve ever seen. Very well done. And I’ve seen a lot of catch can videos. I run the brass micron filter and ordering the other can in the video right now. Thank you so much.
Yeah, I was always concerned about crankcase pressure and if something will happen using them, hence the video. Basically for my own peace of mind.
You think the pressure wouldn’t increase so much in a petrol engine? Thanks
This is nicely done sir. I was wondering why mishimoto added those fancy bronze filters knowing that it would be add more restriction to the air flow. And im glad this answers it
thank you so much for exceptional information. i've remove the bronze filter.now car feel better
Thank you for all your efforts, found it very helpful.
Really useful comparisons. I'm erring on a system for my UK 2 litre diesel that incorporates relief valves to allow 'through flow / bypass' if a filter becomes clogged. But put off by the silly prices of Genuine Mann 200 Pro Vent CC and the Flash Lube CC replacement filters. Many thanks for your informative test.
Great to find a channel that has the same car and age as mine :) thanks
Hahaha, I know what you mean. Hope the videos are useful.
perfect work my friend! thank you for this valuable measurement... 👍
Fantastic video. Seriusly congratulation for make this test.
Back in 1990 I saw a diesel engine generator with a 2qt paint can as a catch can filled a course fiber. The crankcase was vented straight to the center top of the can. The lid was perferated with what appeared to be knife stabing holes all over the top of the lid. The can was placed in a larger pan with an oil spill pad on the bottom. 😂😂 my guess is that this was better than venting straight to atmosphere. I had to open the can. What I found was amazing. It appeared to be working quite well. 😮
Best video of catch can comparison
I was used oct mishimito on my captiva diesel, its make engine seal cover leaks.thanks for make this video very very good
That's definitely why! Especially under boost, you crankcase pressures are going to be much too high. Lucky it was only your valve cover seal.
Best Chanel for 1.6 hdi
Great information i run that universal can with steel wool. It catches 1oz in 1000miles
I just purchased a MH provent 200 for my vehicle. I'm glad to see I made the right choice.
Very nice video. Waiting for your "How to replace the trasmission of your Peugeot". I really need this video haha, my car is asking me urgently.
Hahaha, luckily for me it is good for the moment.
This is gold. Thank you very much sir
thank you. benchmark data is always best for breaking theories and myths
Thanks very much for sharing this! Very useful
I have the Provent 200 on my petrol Audi A4, and I LOVE it! It's actually an oil/air separator (not a "catch can"), and it has both a pressure release valve, AND an active pressure regulating valve along with two different types of filter materials (nylon screen and sponge), a plastic coalescence screen, and room for an added wad of steel wool to increase coalescence. The type of filter element is really what matters. I'd never use a "catch can". They are overpriced, are nowhere near as efficient as an actual oil/air separator, and having TWO pressure regulators makes the comparison moot. .
Hi mate. Where did you buy the Provent 200? It is original ? I agree with you catch cans are useless. Thank you
Great test. Wow! That eBay catch can could create a lot of problems. That can cause the turbo oil return to be pressurized and back up. That will make the turbo smoke like crazy and can obviously make people think there are all kinds of issues. Not to mention other potential harm from high crankcase pressure. The ProVent 200 setup is impressive as demonstrated many times now. This was all done at idle? Under boost I imagine all of these numbers could change, but the eBay catch can would clearly become the most problematic. Good info to have!
Yes, all was done under idle. I also tried to match the temperature of the engine, i.e. had a quick go around the block to bring the engine to operating temperature if I was fiddling for too long.
Yes, the numbers would change under boost, but because there is more suction (turbo spool) the crankcase pressure is the highest at idle.
@@moremolecules I guess that would depend on how much blow by there is and perhaps it's different with diesel vs gas, but a lot of gas vehicles see the highest amount of PCV flow under high boost, but not necessarily pressure so I see what you mean. Yeah the turbo will be sucking the most as well, but if you were using a restrictive catch can like that, the flow could be far too much and the pressure would back up causing a massive PCV pressure spike. That's my concern. With a good flowing system yes pressure should be lower. :) Again awesome vid.
@@802Garage Thank you very much indeed, much appreciated. Diesels are a bit different as compared to gas/petrol, they need their turbo, although naturally aspirated exist. Their max crankcase pressure is always at idle. I tested under boost and with any blip of the throttle, you get lowe crankcase pressure.
thank you excellent demo
Thank you for the comment and encouragement
Yes you can have some thing that filters good with small delta P, but like any thing, you pay for it, and size is larger, the Parker CCV systems are very efficient
thanks for the info veru good explanation and test!!!!!
Excellent Information, TY.
Congrats on a job well done! Excellent video explanation! Exactly the info I was looking for my 2014 3.0 liter Ecodiesel. Im going with Provent with stainless like yours, but before I put on I am going to run HoTShot Stiction oil treatment. If I do before, Hot Shot Stication will not reach the turbo through the vapours , which it relies on. LOL - I might end up putting 2 Y's so when I want to run oil treatments I just turn the 2 valves? your thoughts?
Thank you for the good words. Not familiar with the HoTShot oil tratment, but in any respect any oil catch can is not 100% efficient. Various percentages thrown around on the web, so in any case something will pass through.
I have to pass annual inspection every year and my oil catch can is deemed an emissions modification, despite that it helps rather than produce more emissions. I simply remove my oil catch can system and put in the stock. You could use similar way to run your treatment. I know it is a faff.
very good test
important to note that when the provent paper filter is dirty, it blocks considerably, i had this happen on my diesel. My oil was being forced out of my oil filler cap on rocker cover. So much!!!.the metal one not so mucj so if you've got all of these still i would recommend a second vid3o of them all dirty.
Yes, I bet them all dirty will be quite a substantial increase in pressure.
Wow..very good info
Love your videos. Did you buy a hose & mounting kit for your Provent 200 or did you have to buy separately / make up a kit?
I made my own kit with the hoses and the mounting stuff. Unfortunately, for my car there were not any mounting kits and space was quite tight.
Excellent video with great testing methods. So I've got the numbers right, the actual pressure with the mishomoto + bronze filter was 4.62mbar? (6.20 - 1.58 as it was connected with the man Hummel)
Almost correct. The Mann Hummel 1.58 was 0.01 or so different from the natural crankcase pressure of the engine. So, leaving it there does not add more crankcase pressure, thus no need to do 6.20-1.58, it is 6.20. Hope that makes sense.
Very well instrumented testing and thanks for the suggestion on electronics. However, only looking at idle conditions is not a good analysis. The engine spends most of its time at engine speeds far above idle and under varying crankcase pressure/vacuum levels.
I completely agree. The test I wanted to do is: "is there an increase in crankcase pressure with different oil catch cans". The highest crankcase pressure will be under idle, so that is why I did it under idle. Of course, there will be different vacuum/pressure levels under load, but very difficult to test under normal road conditions. I would not be able to replicate the same journey. If there is a dyno or rolling road, then it can be done, but I have not got access to these.
It can be done with driving on normal roads, but then again one needs to repeat it several times, then averages, distributions, standard errors, etc., and it will become a statistical test. Most people will switch off and not follow in order for the test to be accurate and representative.
Very helpful video!!!!!
I have been looking at the mishimoto mmbcc-hf that has been mentioned as it hasn't got the brass filter it also has larger inlet and outlet I think 27mm
Ths you for sharing bro ✌️
Interesting video and it got me thinking about my car and how I have the catch can Installed. In a gasoline naturally aspirated inline six cylinder engine would there be much concern for increased crankcase pressure if I decided to use the mishimoto type bronze filter cans?
I’m only asking the question since I can really benefit from the decrease of blow by into my intake manifold but not at the cost of raising crank case pressure and blowing out all my seals and causing leaks I do not wish to have 🤷🏼♂️
Good question. I would always thread on the cautious side of things and get a bigger (if there is space to fit) oil catch can, for example the Provent200 or bigger.
Thank you!
Thank you for this video. I will be buying a knock off Provent 200
Thank you, thank you for a very nice, well documented and scientific approach ! I have also done my part of experiments and come to the same conclusion wrt. the sintered bronze filter. The pressure drop across those is rather high. In your example the filter looked kind of dry. But when this type of filter is wetted by oil droplets over (a short) time, the pressure drop will increase even more. These filters are simply too small in terms of filter area for an application like this, where just a few millibars matter.
It is interesting to note, that only the Mann & Hummel filter takes advantage of the cyclone effect, by having a TANGENTIAL inlet. By this, the incoming fumes, with oil-droplets, will be whirling along the insides of the canister, splashing off most of the droplets (being heavier than fumes) at practically no pressure drop. An old trick from the process industry.
There is another issue that I have not seen mentioned in the many Oil-Catch-Can videos: The intercooler !
Let me explain: A turbo-charged engine will have an intercooler. This is due to the fact that air is heated when compressed. When air is heated it expands and thus, less air/fuel will go into the engine and nothing is gained from the turbo. Unless you cool the air after the turbo.
The intercooler is normally fitted under the radiator and is thus the lowest point in the air-intake system.
Where do you think the oil-droplets and oil residues inside the air intake system is gonna end up ?
Right ! Over time, must oil films deposited on the insides of tubes and hoses in the intake system is slowly, but steadily seeping down to the intercooler, filling it up. In fact, the intercooler is a perfect oil-catch can, being nice and cool, condensing oil-droplets in passing.
Of course, the turbo outlet itself will provide a substantial pressure (thats what they do :-) and so some air is still gobbeling thru, but with limited, or no cooling action.
My guess is that most intercoolers dont work. But then again: Its a good thing we never need those 250+ HP just by gurgling around town, so we havent noticed :-/
Thank you very much indeed for the really detailed comment, more than appreciated. I would say it is somewhat scientific, as there are still a few variables unaccounted for, but still better than nothing I guess. Yes, the bronze filter has way too limited surface area. I think Mishimoto realised this as the huge Ford Cummins engine (6.5L) was throwing some errors and they produced a new oil catch can for this engine, much larger surface area and not 50 microns, but rather coarse mesh.
Yes, the cyclone effect is pretty good actually. There was a scientific paper on that and it was the most efficient way without increasing/hampering the restriction/flow.
I have thought about the intercooler, it is basically an oil catch can in its own right. I have already bought a second hand one to have some tests with it and will post a video someday. I am thinking of a semi-scientific way to test oil catch can efficiency and have some ideas, it is just time that is not enough.
All the best.
Great insights, but one thing. Intercoolers absolutely work. The difference is massive. I highly recommend looking up the article "How intercooler design can changer the performance, efficiency and power of your engine" on Engine Basics as well as "Drop Intake Temperatures. Drop Track Times. Drop Jaws. The Ultimate Guide for Intercooler Selection!" by Mishimoto. The latter is much less data dense, but still demonstrates what a difference intercoolers make. Intercoolers are also a trade off between restriction, cooling, and efficiency.
Well detailed video. I followed your video and installed OCC successfully. I ran my Toyota Prius hybrid on maintenance mode for almost an hour ( to check if it's still overheating intermittently due to weak water pump that I replaced with new water pump and that's been fixed ) but I noticed the hose that I connected from outlet of Oil catch can ( universal OCC) that goes into the intake manifold was completely flat due to high pressure. Do you think OCC might not be functioning as it supposed to or should I replace the hose with the heavy duty hose ( thicker one) , like the one I got that connects from PCV valve to inlet of OCC. Do you think I need to get a fuel line hose which is thicker than the one I installed ( maybe I got radiator hose ) .I subscribed. Thank you for you reply
Yes, replace the hoses with heavy duty ones that would not collapse under pressure/vacuum. I would get something that is fuel safe hose, but such that it would not collapse under pressure.
Hey, great channel, loads of very good info. Just wondering if you have replaced the plastic inlet manifold? I just got a 1.6 hdi 145k miles. The inlet is really blocket up with carbon and goop. I dont think i will be able to clean it out of the plastic inlet. So i want to buy a new one. I am looking on ebay and all are aftermarket, just wondering if they are any good quality
Thanks for the encouragement. Which plastic inlet manifold is that? Is it the PCV valve one?
Have used a few of the cheap ones and have been worried about the flow/ pressure. I extend the baffle or air / oil seperator with tube of alum, you can also use Plastic pipe. Keep it off the bottom about 3/4 of an inch and that is where I put the steel scubbing pad small amount . Wanted more time for the air/oil to drop separate by giving it a path and for it not for to just go in and out since they are beside each other. Will know next oil change if it sucks more oil than last time. Also like these for smaller motors as they produce less volumes of pressure. Bigger cubes more air. Got this on my Honda element and put the larger K1 on my Chevy G10 van . Seemed to smooth idle out somewhat to and I guess acts as a vac can storing it up for braking etc. You mention neg vac with turbo under load
Hi craig, absolutely agree with the alum tube down. I should do that, it's been on my list, it would certainly help. I think there was also a modification, where this tube is with holes, so it does not restrict too much. Yeah, the air will find the shortest path, i.e. from one hole to the other.
@@moremolecules wondered about the holes but spoke with my flow bench guy and meh. Can cause turbulence i use a tube the size of the screen so no flow loss. Also as air hits the side drilled tube holes the oil which will be dripping down them to be sprayed doing just the opposite of what you want. Rather it go down tube then through the media/scrubber and find it's way out. Idea is oil drops in droplets/like fuel . Let the oil drop and air up . Not sure how to post a pic of mine on here maybe i will do a video. You can email me. If your still worried about bubbles try farting in the bath tub and tell me what happens ?
@@craigdoherty2974 Yes, I'm worried about the pressure that needs to push the air through the oil/water that will have collected down there. If one blows through a straw in water, there is resistance. The holes in the sides are only for that purpose, the general flow will still go down. Yes, if oil/water accumulates down, the flow will go through the holes.
I did something similar. A DIY "can" made out of 4" PVC a cleanout access with a end cap makes a 7"X4" can with a top screw on access lid, a 1" ID heater hose to the Can. Is fitted with a 90 % elbow or coupler at the upper end of the can facing down on the inside of the can with 1/4" holes perforating 1/2" tube or baffle 1" from the bottom of the can. The glued-on end cap is fitted with a 3/8" ball valve for drainage. The inside bottom of the can is raised 1.5" with an X pattern of 3/8" holes perforating PVC and then topped with a sink drain screen. From there to the top of the can and the 1" exit port is filled with copper pot scrub pads the last pad next to the 1" exit port is an SS pot scrubby pad. This is vented to the atmosphere with a one-way check valve and a valve cover CCV filter. As this can is mounted on the frame of my F350 4X4 6.4 diesel. The possibility of going through some water is low but still quite possible. I tested the exhaust out of the can with a little tissue paper. It appeared to be working great. We will see. I will check it at 500km then 1000km and last at 5000km for regular Oil and filters servicing and of course, undercarriage inspection.👍😊❤️🇨🇦
To test seperate will be more true test as all that beding and hose lenth will cause extra restrictions. Hope we can se can tests performing appart.
It is a relative test at the end of the day. In addition, the bronze one is compared to another one with the same length hoses, so you get relative restriction compared to each other. The "fake" Mann-hummel does not add anything to the crankcase pressure, so leaving it there does not change the pressure.
Ciao complimenti per il video. Hai mai provato il decanter con l'altro filtro sopra?
I tried translating the comment, but was not too sure what it exactly meant about the decanter with filter on top. Sorry.
@moremolecules I'm wondering - could increased pressure for mishimoto/universal catch cans be due to much smaller in/out ports? ProVent has 24mm internal diameter input/output ports whereas mishimoto and other cheap copies are usually around 10-12mm and the biggest I saw were 19mm outer (16mm inner diameter). It would be interesting to see what would be the pressure if one would make ports for mishimoto/universal bigger - say 22mm (which is original hdi hose connector inner diameter)
Most of the increase in pressure does not come from the hoses or the smaller in/ou. I did try the Mishimoto/KKmoon without the bronze filter to see how much this adds. It was relatively substantual increase in pressure, so not just the hoses. But they all add to the increase in pressure. Basically, the bronze filter is the biggest contributer to the pressure increase. At the end of the day it is a balance between complete efficiency and permissive. If you have complete efficiency or close to that, it is to create resistance as the gasses need to pass through something where they have to coalesce, hence the increase in pressure as too big holes and you have little efficiency. Gas molecules, even laden with oil/water are still pretty small molecules.
Great video. i have been looking to install an Oil catch can on my gasoline engine for a while now. After watching your video, i got concerned about the positive crankcase pressure problem. Do you think installing an OCC with brass filter a bad idea?.
Yep, one of the reasons I am leaning to ADD w1 or UPR.. ADD w1 is on sale for $109 for its V3. There is a YT video where a guy uses a cheap $20 OCC and removes the brass filter. I would always advise that.
very informative...as for In / Out, I also installed mine opposite of what's on the can and wasn't catching much. When I installed per instruction, it caught more oil / water - also just put fine mesh screens (2) in the baffle. I think either way is fine as you either catch the oil / water from PCV or catch before the air re-enters the intake. I also put a steel wool in there..not sure changing to copper scrubber makes any difference (Mishimoto's have "bronze" filter so.. :- )
Why would you think think either way is fine, when you just said you installed the opposite of what's on the can and wasn't catching much.🤦♂
I was also worried about the pressure on that bronze screen choosing im ordering the plastic can im sold
Recently built a new 2.0hdi engine with the mishimoto knockoff with bronze filter. The oil was coming out of the rtv sealed places, getting rid of that shit.
thank you so much
Awesome video, wished I found it a couple of weeks earliers! Just installed a Mishimoto on a diesel Mercedes ML270, definitely not comfortable with those values. Nevertheless, the main problem I've been having is that I'm getting oil from the "out" port. Tried it the other way around, the "in" port throught the bronze mesh, and was getting better results, any ideas why? Anyway after watching your video, i think i will remove it completely
Well, not too sure why it is gathering oil on the out port. THe oil catch cans are not 100% efficient for separating the oil, so you will always get some on th eout port.
Good to know!
Once the filter media gets oil saturated I’m afraid that will restrict airflow causing case pressure to increase.
Yep, one of the reasons I am leaning to ADD w1 vs UPR.. ADD w1 is on sale for $109 for its V3
Great work! Is it possible that the actual mishimoto catch can's bronze filter is less restrictive than the cheap copy's filter?
It is possible, but unlikely. I linked a video (in the description of the video)) of a comparison of the original mishimoto and the "fake" one and they are identical. I suspect it might be just the same factory producing them, but does not label them mishimoto
I've read in a forum before that its pretty restrictive, Mishimoto has then redesigned and replaced the bronze filter with some kind of big pore sponge type filter that covers the whole ceiling area of the can.
thanks. subbed to you channel
Excellent work my friend. When you take out the oil filler cap do you see smoke and pressure coming out?
Hi DieselTips, there is not much smoke and pressure coming out, of course there is some.
Hi man , thanks a lot for making and sharing the video, it has really good information and data comparison , has helped me understand how such a system works.
I have installed a no name catch can with brass baffle ,drove about 6000 km and concluded that the engine has burned/leaked about 2-2.5 litres of oil . Now , I took the system out to see if the engine itself is defective or if my catch can system was somehow fault. I have the car only 5 months so I don't know yet if the engine burns oil or not, no blue smoke whatsoever and no puddel under the car.I must mention that out of the 6000 km , I drove about 4000 only on the motorway and up to almost 3000 rpm. Now the questions taking in consideration all the above, if it was the catch can's fault and was too much of a pressure in the engine, have I done damage to all the seals and o-rings inside ? Do you think it will still "burn" the same amount of oil without the catch can system?
I would be glad to hear your opinion on this, thank you and keep up the good work !
Hi bogdan, I completely understand your concern/question, but really difficult to answer conclusively. The bronze oil catch can does add to the crankcase pressure, but it should not be enough to cause oil leakage from the seals. It could be, but difficult to say with certainty. Depends what your engine is and what the current crankcase pressure is. If the oil catch can was enough to cause seals leaking, it would have happened anyway. The other thing is that depends on the hoses and your CCV/PCV valve. If the hoses collapse under pressure/vacuum, then that could have contributed rather than the oil catch can. It could be that the CCV or PCV (depends on what is in your engine) could be blocked or not working, that would certainly lead to oil seals leaking.
You may need to investigate where oil is leaking from, as it may well be say be the sump plug.
@@moremolecules Good day sir, I don’t know much on these things and oil catch cans. I have a Holden Colorado with a 2.8 Diesel engine and recently bought a mishimoto oil catch can with the Bronze filter and baffle. Would it be ok for that engine or should I remove the bronze filter?
@@hemakalpoo5686 It really depends on the condition of the car. If it is in a good condition, it should be alright. I mean how much of a breather is the car, if it is not too heavy breather then the increase in the crankcase pressure will probably be OK with the bronze filter inside.
Hi nice video,
Do you think that leaving the return pipe to the turbo disconnected will change anything apart from emissions ? or there is another reason for the return pipe to go back to the turbo !
Hi Jaber, it has dual purpose. One is the emissions and the other is that the air pull from the turbo brings the crankcase pressure in the engine down, up to a degree of course (the PCV closes to stop the oil being sucked from the engine). I have it on a graph in this video: th-cam.com/video/h4TQ-XVWU30/w-d-xo.html. When you press hard the acceleration, the turbo kicks in and the pressure in the engine is negative, with respect to atmospheric of course. This really helps the gasses being drawn out. If it is left out, not connected, then the pressure in the engine is always high, long-term is probably not a good thing.
@@moremolecules
Thanks for the reply.
It would be fun to run the car as you did in the linked video, but with the return pipe disconnected and see what the graph looks like, if it will be constant all the time like in idle or if we see some difference.
@@Neema1135514 Yes, I have not done that, but it will be interesting to see what the pressure is.
I have used that exact generic catch can following the in/out guide for my petrol NA honda. I used the 9.5mm fuel hose (OEM internal diameter hose size) from PCV to inlet of catch can with baffle only. Then I joined OEM 9.5mm OEM hose that was originally joined to PCV before to the outlet of the catch can. Do you think it will increase the pressure in the crankcase? The only doubt for me is the catch can itself as the hose I used is same as the OEM one.
It will add a little bit of pressure, but really depends on how worn your engine is. If it is not worn too much then it should be alright. It is a combination of the small hoses and the filter, but mostly it comes from the filter rather than the hoses.
Cool.... nice one.
Hi brother!
This video use Can Catch oil is copy of Provent 200 is right?
That video uses the copy of the Provent 200
Very informative. Great video sir. This is exactly what I'm looking for. I'm planning to install Oil Catch Can myself soon but wasn't sure if it's good because some video said not to install it because it will increase the crankcase pressure. Now I know it's the internal design of the Oil Catch Can that effect the crankcase pressure. Got the 'cheap' Oil Catch Can exactly like in your video in our local store. Will get those soon. Thanks again for this video.
Also my car is Mitsubishi triton 2.4 mivec. Has over 100k km on it. Do you think it's too late for installing Oil Catch Can? Thanks.
@@ericsson980 Never too late really. 100k is not that much anyway, so perfect time to put one.
@@moremoleculesthank you sir
So this test is for dieael engines. Any test on petrol engines, will the bronze filter increase the crankcase pressure as well...
Yes, this is for a diesel engine, but it will be the same with a petrol engine wih respect to the increase in crankcase pressure
Great test!
i was wondering if you can do the reading tests again but after 10-15 minute to be more accurate.
Again thanks for the helpful video
I wanted the same condition for all catch cans, so the engine was always in operating temperature. I can wait for the engine to be cold on all catch cans, but I cannot control how cold the engine will be, but I can always keep the engine in operating temperature, so more consistent test across the catch cans.
Is that what you meant for the 10-15min wait?
@@moremolecules yeah of course it does give more accuracy doing the tests while engine is in operating temperature although you could try test while its cold it won’t hurt to see those numbers before warm up, but what i meant is
could you repeat the test after idiling or driving for 10-15 min?
@@keepitathousand420 Yes, the cold ones will be quite big, depends on how cold of course it is outside. Before doing the video I did quite a few runs on this to see what works and is the most representative. Generally, once the engine is relatively hot, the crankcase pressure does not change too much. Say if I drive for a bit and measure then will be almost exactly the same as if I had stopped for 10min to change the catch cans. I can probably do it anyway and see what comes out.
@@keepitathousand420 I probably could, it would not hurt, but the difference is very little between these.
On the universal catch can where do you put the mesh? In the main body or screw off the little baffle and stuff it in there?
Hi Russell, I would put it in both. I would certainly put some in the little baffle, but in the main body will increase the crankcase pressure, although only slightly. In the main body will give a chance for the oil vapour to hit something and potentially coalesce into larger droplets and eventually into a liquid.
HUGE!
I like the double catch can system. But that is just a play on emotions. After say 5000km how much oil. I will call it engine sewage that I do not want in my combustion chamber not ever. How much was collected in the cans. Did adding the second can help?
Yeah, it was only an experiment, I did not run it with two oil catch cans for long. Nevertheless, how much oil is rather difficult to answer. I had quite a few videos about how much it collects. In all honesty it depends on how worn the engine is of course. Most surprising was that the oil catch can pretty much most of the time collects water. Mixed with oil it becomes a bit milky substance. Depends on the weather of course, here in the UK it is more often than not humid or raining, so I collected a lot of water, but say California or here in the summer it collects mainly oil. Not too much to be honest, but that depends on the engine.
Hi!! excellent video! cool!!! So would the kkmoon's copper filter be a good system for gasoline engines? Or would you recommend the Provent for a gasoline engine?
If you can afford it I would still use the Provent, although the kkmoon is also alright. The only negative of the provent is that you need to replace the filter every so often, probably something like 20k miles.
@@moremolecules ok!! Actually, the issue of changing the filter doesn't bother me, if it helps the engine, it's fine for me, thanks for the help!!! 🤘
@@Mark_182 I am always penny watching, so that is why I mentioned it. If you have not probelm with cnahging every so often it is a good system.
@@moremolecules excellent thank you very much!!! 😃
So what is the safest way to hook up a catch can system?? Mine is a gasoline non turbo. Do I need two catch cans or is one good enough??? Just one catch can with no bronze filter would be best??? I assume id want it to be the same pressure it was before I installed anything?
Hi Ben, apologies, I probably made it to look more complicated than it is. Only one catch can is enough, preferably the non-bronze one. If you engine is not too worn (not much blow-by) then even the bronze one will be quite good. If you have an older engine, then I would not recommend the bronze one. Yes, you want the pressure to stay as low as possible.
I only used the two, as it was easier and I had them hooked up already.
Do you still use the extra steel wool in the ProVent 200 with excellent 1.58 and 1.54 mbar readings? My current setup leaves no residue in the intake pipe or throttle body (great!), but my suspicion is it's causing too much back pressure over time. My valve cover has begun leaking. Does the ProVent w/mesh screen filter - clean the air well ???? I'm not going to return oil to the sump, but I would like the outlet air on the ProVent to be very clean, however. Suggestions?
I still use it yes, but it might create back pressure or crankcase pressure. If that is the case, I would remove them altogether. I would not return to the sump, it is just that the filtered oil is not that clean, although onece the engine is in operating temperature all the stuff gets evaporated anyway.
With the original paper filter it should clean well. Only way to see it is to have a go and see if your intake gets a bit oily. If it does, then have the mesh not too dense at all and add a bit more with time and monitor.
All of these depend on how much crankcase pressure there is in your engine already, so difficult to tell and only experimentation will help you.
@@moremolecules My rather sudden valve cover oil leakage is suspicious. I've been using a Moroso Oil Breather Tank with a positive breather attached w/return vacuum - but started driving the car a lot. I just ordered a copycat ProVent 200. I removed my wiper-wash tank on the other side of the engine bay and have long hoses to the Moroso - so this is cold and works very well. In your application, I would put straight copper pipe where possible to assist in condensation collection or move the tank far away - so it is cold. The Moroso inlet is simply too small - to ProVent is better. My application is modified VR6 12v 6-cyl. Great videos man!!!
Danke super erklärt habe
👍 vielleicht habt ihr auch auf meine Frage eine Antwort???
es geht um den zwei Liter TDI..Macht es da Sinn eine Öl catch can zu montieren?
Bitte um eine detaillierte Antwort. Danke schön
It is worth it. At the end of the day, these direct injection diesel engines are designed the same way. You get some oily vapour coming from the breather/PCV/CCV valves to the turbo and air intake, which combines into pretty hard stuff with the carbon from the EGR valve. You also get some carbon deposits on the back on the intake valves. An oil catch catch should minimise the oil, so you only get carbon from the EGR. All in all is worth it. WHat is the efficiency is difficult to tell, do you get 15% of the oil in the oil catch can or say 80%? I do not know, difficult to tell. Probably somewhere ~20-30%, maybe less. So, does it make a difference, also difficult to tell, but probably it does.
I saw that some people have fitted the 1.9TDI with oil catch cans, so I suspect the 2.0TDI is probably not too difficult to put an oil catch can to it. If you want to keep you car for longer, probably worth it, if not, then probably not worth it.
Hello my friend
I installed a cheap type oil catch can and it comes with a small filter on top
Note that I bought the car three months ago
Diesel engine 2500
A month after installation I found a little oil around the manfold casket
and inside the intercooler
The engine is good, there is no black or white smoke, and there is no oil loss after traveling 3000 km
I really don't know if the reason is old or the cause is the oil catch can do it
Another question
Should the installation be done away from the engine, away from heat?
Does it need to be installed a little higher than the engine level?
Finally, sorry for my many questions and sorry for my English
Not too sure what the problem is, but ideally you need to place the oil catch can as far away as possible from the heat. At the end of the day the oil catch can is a condensing thing and the bigger temperature differential really helps with condensing oil/water, etc. So, if you can cool the oil catch can really well, say with ice or cold water then the efficacy will be really good. Unfortunately, this is not practical in engines. I would not install an oil catch can higher from the crankcase breather, as the condensing fluid will come back and plug the hole. Ideally you need to put it lower than the crankcase breather so any fuild/oil to go into the oil catch can.
On the cheap catch can the intake and outtake inner diameter of threads how is it?? At man hummel is about 25-26mm and at i believe is around 10mm so that's probably why is a little more pressure.
Yes, could well be. As far as I remember the diameter of these were ~8-10mm, so twice smaller and the size of the can is smaller.
What kind of hose is necessary for catch can back to intake? The 3/4" heater hose that I used collapses. Heat from the engine makes the hose pliable, and the intake's vacuum pressure causes it to collapse.
Hi Greg, yes the usual hoses that are supplied with catch cans are too weak. I use fuel hose 25mm. It is a bit on the thick side, but it will not collapse, it is too rigid. The other option is to get reinforced silicone hose, but it has to be fuel safe, otherwise it will disintegrate eventually.
Teflon lined Fuel Hose is actually the best. More expensive, a little harder to work with - but VERY stable and durable. It's impervious to Chemicals, which is why it's popular to use with E-85 Ethanol Fuel Systems.
@@CarminesRCTipsandTricks Great advice and many thanks indeed. I will have to investigate this to see if I can purchase and replace my own hoses.
How about making more tiny holes on the disk baffle for more air flow and removing the bronze filter and adding the scrub pad?
Yes, that would work, but then again it will not be too different than the cheap one with the larger holes and the scrub pads. I guess that the bronze filter with a few larger holes will reduce the increase in the crankcase pressure.
That sounds like a good idea. Weekend project. Thanks Molecule.
I’d be interested in seeing what vent to atmosphere pressures look like. I can’t find any info online. It might not apply to your vehicle but plenty of people run breather cans
Hi Jason, I do not quite remember if I did this test, but might do a quick test and compare the crankcase pressure with venting to the atmosphere.
I run mine to atmosphere using 19mm id hose..seems to work well and can only benefit engine internals..no brainer
@@moremoleculesllegaste a probar que presión tenías a la atmósfera? Un saludo?
@@AndoniFV Unfortunately I never did venting to the atmosphere test. I did not have at the time a filter that vented to the atmosphere, otherwise I would have tested it.
Nice video but im surprised you didnt test catch can with a breather on top if it :)
Yes, good question. Simple reason I do not have one to test unfortunately.
I suspected the bronze filter would increase pressure. imagine when it gets clogged up, the pressure would be even more I reckon.
Hi Nizar, yes I was also suprised how much the pressure is with the bronze filter. It really depends on what pressure can the engine reasonable sustain. Overall there will be an increased pressure, but how much this will impact the engine is another question.
@@moremolecules Thx for the reply. I was worried abt this pressure. My engine has a lot of blowby and the pcv valve would get pretty oily and restrict flow. I keep hvg to clean it with brake clean very often.
I have a replica mishimoto with the bronze filter, but this problem u highlighted was a big worry for me. thx for this video, it confirmed my fears. good thing the bronze filter is removable. I plan on removing the bronze filter and just keeping on the round baffle plate. currently im awaiting for some fittings via mail before install. in place of the removed bronze filter, i plan to screw in a barbed connector so that the blowby would have to travel down the can and up through the baffle and finally travel through the barb connector and out the can. hopefully it can capture the oils at the bottom without creating too much pressure. once i have setup I'll do a video and put a link. maybe provide updates occasionally.
@@MrAcc45 That would be really good. Let me know if you do any videos, I'll post it on my community page.
Then throw in some cold winter weather and frozen water vapor will clog it up even more.
Will this also increase pressure for a petrol engine? I see a lot of ppl running catch cans for a boosted (SC or turbo) petrol engine and maybe its doing more harm then good by increasing Crankcase pressure
Yes, there is no principal difference in the crankcase pressure increase in the petrol engines. It is just that diesel engine have much higher combustion pressure of the gasses as there is no spark. What I am trying to say is that as far as I am aware, with some oil catch cans, e.g. the bronze filter ones, there will be some increase in crankcase pressure. The problem is to estimate how much is too much.
I don’t think those metal catch cans are meant for diesel engines, just petrol engines. But a nice analysis. Well done
Yes, could well be, although in the description of these they always put diesels as well. Overall there is a bit more crankcase pressure in the diesels as compared to petrols.
If the Universal Aluminium Engine Oil Catch Can ahave a breather on top, is it still good?
Yeah, it is still good. You can either block the breather or put a filter on it.
I just bought a mashimotto repleca oil cath can same as yours with the bronze mesh . I have a civic with r18 na engine 1.8 lit and i want to put this oil cath can in but after what i saw maybe i wont i thinking about take off this bronze filter and put the stanless steal mesh that yo put bittwen the top cap and the steel plate (that with hules in it ) it will be alot of filtering mass and a better air flow can you check that out 😉
Hi Far, yes, I was really surprised as well that it increased crankcase pressure quite a bit, I would say significantly more. Nevertheless, it's only 6mbars, so not that much. Then again, depends on what the engine can sustain. I suspect that this bronze filter will really filter oil rather well, apart from the crankcase pressure.
@@moremolecules i think its a good design to but if that pressure can blow gasget like between the engine and gear one its gone be lot of mess work and money its not like leaking from valve cover gasket
@@allahasan6631 Yes, but that is the problem with oil catch cans, it is somewhat a trade-off between efficiency (fine filters) and blowing gaskets. So far I have not seen anyone investigating how much pressure is needed for a gasket to be blown and start leaking. If an engine is a heavy breather, then an oil catch can will add to that, so making matters slightly worse. The leak most likely will be between the block and the rocker cover, rather than anywhere else, but that is only a guess.
Thank you for an informative video, I have one question: I have a catch can with the bronze filter. The catch can is routed from my PCV to an intake vacuum line. The catch can also has a drain valve at the bottom. When the engine is running I have opened the drain valve and i can feel the strong suction. As long as there is suction is it safe to assume that there is no build up in the crank case pressure?
Hi Joshua, no necessarily though. It only restricts slightly. In other words, if you did not have the oil catch can, the one with the bronze filter, the vacuum/suction will have been stronger. I assume your engine is petrol as diesels under idle will not have strong suction, but pressure. It is tough to say if the restriction is enough to cause problems, e.g. oil leaking past seals.
@@moremolecules I do have a petrol engine and yes agree, suction could be stronger without the bronze filter, but as long as there is suction the crank case is being vented, which shouldnt cause any pressure build up, do you agree?
@@joshuagracias6354 Yes, the crankcase gasses get sucked out and pressure relieved.
Think a better test to test fist can, is to let it run first for a while to get soaked with oil. As it soaks up all the oil first than drain to bottom. Than restriction will be more. Want to agree with Joshua Gracias with turbo engines its sucking air through more, that the cans a better option
I agree that getting an oil catch can soaked with oil will increase the crankcase pressure, as they become more restrictive. It does not matter if there is suction from the catch can or not, there will always be suction there, at the end of the day it is connected to the turbo. It just matters how much restrictive are the passages.
I have one of thoes ones with the brass filter. I drilled 4 small holes in the filter and then filled the can with steel wool. I thought it looked restricted. Cheers
Good idea
Excellent information. Those bronze filters are crap, the makers aren't even standing behind them. 4 times the pressure, what the hell....
I was also surprised that the pressure was that high with the bronze filter. Although, it will probably filter quite well due to the really fine holes inside, allegedly 50 microns.
@@moremolecules I noticed an orange cast on my spark plugs months after installing the bronze filter type. It appears that the pressure in the engine was forcing oil through the valve seals and that orange cast was oil additives. The bronze filter becomes clogged.
@@nespokesman Thank you for sharing this. Because of this increase in pressure I decided not to use the catch can with the bronze filter. If they invent the same catch can, but with some sort of a by-pass relief valve, like the Mann Hummel one, I would definitely consider it.
Hi hope u r ok. İ broke bronze filter, took it off. Now will there any harmful crankcase pressure for engine? My car is 2012 year 2.0 turbo diesel chevrolete cruze.
Not too sure if I understood the question. You took it off completely, well I suspect that how the car was designed to begin with, so probably it is going to be alright.
So from what I gather you are saying that the Mishimoto design is bad for diesels but for a gasoline engine it's not a problem? I have the Mishimoto on 3 of my cars and haven't seen any issues. My 2009 Corolla S is turbocharged and the crankcase is also vented with a filter so I would guess there is no problem at all with that set up. Did you also test a vented oil catch can? I also heard you say that this is an issue at idle and not at speed. Is that also true for a gasoline engine?
Yes, the petrol/gasoline comment was a slip of the tongue. It would be similar to both. I did not quite say it is bad for diesels, only that compared to the others it increases crankcase pressure more substantially. Now it depends on the condition of the engine, if the engine is not a heavy breather then the slight increase in pressure is not that much of a problem. For some engines this increase in crankcase pressure could tip it to leaking from the seals. Unfortunately I did not test the venting to the atmosphere, it is illegal around here and I did not bother, maybe I should have. I have not tested the gasoline engines to check when is the highest crankcase pressure, but for diesels and I suspect petrol engines both would have the highest crankcase pressure at idle. It is just that under load the air flow (turbo or not) helps evacuate the gasses from the crankcase. I have not tested it but if venting to the atmosphere, you do not get this evacuation of gasses and it is kind of like constantly under idle or consistently under higher pressure, but might be wrong about that.
@@moremolecules It would be interesting to see for sure in very controlled testing. I've seen a lot of people use the Mishimoto design and Ive not seen any people mention any problems. If there was a huge issue it would seem that this would be a known and highly talked about issue. I've seen information about using a vented system on pre-PVC car and a closed system on cars with a PVC valve. Your video make me have more questions than answers since I've never heard of this being a problem.
@@jimsgaragetoys Many thanks indeed for the interesting discussion, much appreciate it. I only made that video because I did not know the difference between the different oil catch cans in terms of crankcase pressure. I really searched a lot for what is normal or usual crankcase pressure for my engine or any engine, because that is important in terms of how much more can you increase it with say the mishimoto oil catch can. I only found one single website for a mini cooper petrol engine and the reference value was ~30mbar. So, if this is anything to go by, the Mishimoto oil catch should not lead to any problems, as the overall increase in crankcase pressure if not that much as compared to the max 30mbar. The only problem can arise if the overall crankcase pressure of the engine is really high, say worn engine and it is close to the maximum. Then adding the Mishimoto could tip it over and lead to leaking seals. Now if an engine is that worn, I suspect that people will either recondition it or throw it away anyway. So, I suspect that most people just have relatively good engines and the Mishimoto would not cause leaking seals. Now an interesting question is, will the higher crankcase pressure cause any problems down the line. Maybe, but it is only a guess and it might not lead to anything overall.
@@moremolecules Thanks, for your reply. I'm guessing that I haven't found issues with the OCC because the pressures were higher at idle and not while driving. I think of how little time my cars spend at idle so I'm not too worried. Thanks for your time and information.
@@jimsgaragetoys No worries and thank you for the interesting conversation. I guess it will also depend on how worn the engine is. All the best
Thank you for the video, really informational. I have just installed the "universal" oil catch can on my 4b11t and would like to know the impact.
If you are running a turbo, would increasing the crankcase pressure be a plus? LOL
Well, no, the increased crankcase pressure is the engine pressure, not much to do with the turbo. Generally, any excessive crankcase pressure is not wanted in the engine, as if it is excessive seals can leak oil. Most oil catch cans do not increase the crankcase pressure that much, but some do. It really depends on how heavy a breather your car is. Say, you car is a heavy breather, i.e. it is a bit worn and gasses pass the piston rings and result in higher than normal crankcase pressure, this will be compounded by the catch can and increase the crankcase pressure more, but it should not in general be that much of a problem.
@@moremolecules thank you for your reply. My oil catch goes between pcv valve to intake. So if it has some level of air flow resistance, it will increase the pressure of valve cover. Though I know several millibars won't have any noticable impact. Just a joke.😂
@@zijie-he Haha :-)
the oil catch can at 12:00 it isnt backwards that isnt a baffle to stop oil sloshing and being drawn in its a baffle to help oil vaporize and stay in the can and not in the air it sis supposed to be on that side :)
Did not quite get that, sorry.
Hi, do you have tutorial on how you set up all that pipes? i want that idea to avoild damage of turbo charger. Because in normal pipes even there is no leak i saw black oil in the turbo.
Not too sure what tutorial, but I have a tutorial how I installed the oil catch can in my 1.6HDi, a whole plalist here with 2 videos how to do it: th-cam.com/play/PLx5YM-qLHn7wtOnyXn0MohIjAVivvG_nw.html
And how to replace the turbo in the 1.6HDi: th-cam.com/play/PLx5YM-qLHn7ycuP79oti5D19COwGLmIhe.html
@@moremolecules thank you
To be honest, these pressures are so small does it even make a difference? except the kkmono/mishimoto one, they all just add like .50 mbar or 0.007 PSI. Is that so bad or negligable?
Depending on the engine, the normal pressure in these 1.6HDi is ~30mbars, so not really that much. Imagine from 1.5 to 6mbars out of the 30mbars is quite a bit. A little bit is not that roblematic, but then it depends on how much the engine is worn already. Say it is not 1.5mbars normal, but already a bit worn and somewhere already at 5mbars, adding another 5mbars is quite a bit.
There is also difference in diameter of hose and connector. Mann-Hummel and your OEM setup got very large hose. Mishimoto and the unknown catch cans had very small diameters compared to the other setups. You can make the test again with the Mishimoto and unknown cans on cars with smaller vent hose diameter. That’s my guess
Yes, I completely agree. It is rather difficult to detemine is the increased crankcase pressure comes from the catch can itself or the smaller hoses. I suspect it is from the hoses. Very good suggestion to testing the same with the smaller hoses for the Mishimoto and the other one. This should show if these increases come purely from the hoses. The problem is that the maximum hose intake is pretty small on the mishimoto. I think I have a smaller-sized port for the mishimoto so I can try it. Thank you!
@@moremolecules
And thank you for your videos! I wait for your next one
@@moremolecules I'd like to see a hose size comparison as well as I have a dorman oil catch can on a 2012 chevy malibu running small hoses I've thought about changing to large hoses but I also don't want vacuum leaks and it's working perfectly awesome peace and much respect to you 👍 JASON awesome video 😀 👍 👏
@@jasonhumphry5836 Smaller diameter hoses will add a little bit of pressure, but not that much. If you look at the video with the comparison of the cheap universal oil catch can had only little pressure above the mann hummel, despite the hoses being much smaller diameter. So, it will add a little bit of pressure, but not very substantial.
@@moremolecules thanks for the added information
Hi, so i guess the best catch can is the unbranded one, the one you tried at the end. I bought one equal to the one that produces 2.1 mbar but, I don't know whether to insert the steel sponge? What do you suggest me? my car is turbo powered by petrol.
Good questions! Best is difficult to define very well. In my eyes best oil catch can is one that filters oil the best, but there will always be a trade off between increased crankcase pressure, i.e. narrow passages or restrictions, and filtering of oil. You could have a catch can that filters nothing, for example just empty inside, and this will not increase crankcase pressure. Difficult to say which one is the best. I for one would not want too much crankcase pressure and the associated quite a few problems, gaskets, etc.
If I were you I would not put steel sponge inside, it is already at ~2.1mbars, but that is relative to my engine, your engine pressure might be lower overall.
Difficult to say, but I would not put the steel sponges/scourers inside.
@@moremolecules thanks for your advice
@@andreabordo1675 I have the same one and I put the steel wool in to catch more oil and/or prevent oil vapor going back in. Also inserted two layers of (circular) fine mesh screen in the baffle. My crankcase presssure probably increased by 0.1 🙂
I wonder what's the crankcase pressure if you only use the mishimoto oil catch can
It is the same as running them both. It is just that it was more difficult to do it separately. The Mann-Hummel does not add anything, so what was measured was the actual crankcase pressure.
Diesels have higher pressures so does the Mishimoto standard can cause issues with non diesel engines?
Well, not too sure, I suspect with the lower pressure petrol engines it woul be fine. It really depends on the blow-by of the engine. The higher the bow-by relative to a new engine, the more problems it will cause.
Hi! 🙂 Which one do you think Is the best. Link please 😊
Yeah, dificult to say really without actual testing. My bet is on the Mann Hummel, but that is just a guess.
Hi. The last small catch can you mentioned, it is acceptable to insert a little mesh on the exit/out? Currently my setup is same catchcan but i drop a bigger mesh at the bottom of the can ( around 1/3 in height). Is removing the bottom/base bigger mesh and inserting small mesh on the exit upper side instead be a bit better to relieve pressure and trap oil? Tnx so much
If it is the same as the one I was showing then it is acceptable to put a mesh on the in/out. The small mesh does not add too much to the overall crankcase pressure. In the bottom is also ok to put a mesh/steel scourers . Probably putting both meshes inside is OK. Overall it is much less than with the bronze filter.
@@moremolecules thank you. Many OCC users may not be aware about crankcase pressures. Your info serves as a great guidance👍😷🙂🍁
@@moremolecules question: how about instead of a mesh at the bottom, can i just use a baffle plate and a small upper exit mesh setup?
@@michaelvanna8982 Yes that is alright, although the baffle add a little bit of pressure, but overall is not that much. The crankcase pressure in all of these will not change that much, but what matters is the efficiency of the oil catch can. I do not have much of an answer to that, although I am thinking of a way to test this.
@@moremolecules hi. Update: so i decided yesterday to uninstall the last OCC (we have the same) you showed in the video. Instead, i did the opposite by using the Kmoon/mishimoto like OCC. The main reason is i want to use the drain valve. So i modified the OCC by removing the main restriction, all baffles. So basically i left the can empty inside. I run 100kms yesterday and will run again later today. Then will try to drain if any later. So far yesterday, i did not experience any engine chk lite, nice steady idle, my vacuum reading is -10psi at idle....more updatea to come
Thanks for useful video, i have hyundai i30 with GDI 1.6l , petrol with out turbo
I use oil catch can with bronze filter like the ( kkmoon catch can ) , will the OCC increase the crankcase pressure ? And i also add stainless steel ( scotch brite ) in it . Is that good or not or should i remove the bronze filter ??!
Hi mahmoud, yes this particluar OCC will increase the crankcase pressure a bit. The stainless steel will add a bit more, bit not too much. If I were you I would remove the stainless steel bit and leave it as standard. There will be a bit of increased crankcase pressure, but very difficult to say if that is OK for your engine. If you can find what is the maximum crankcase pressure before seals start passing oil, you can see if a bit more crankcase pressure is fine. Apologies for the fairly vague answe, but I have been trying to get what is the noremal range of crankcase pressure for my engine and I have not found it yet.
@@moremolecules thanks for reply, i tried to find normal range for my car didn’t get it too , i will remove the stainless steel for now.
Can i remove the bronze filter and add fill the catch can with stainless steel? And it will catch the oil , water.. etc in this way ??
And what if i remove to bronze filter from in side and move it to out side ?? Thats will make different?
@@numbman2011 If you remove it and just fill the whole thing with stanless steel it most likely will not catch too much oil. Moving it from the inside to the outside probably does not make much of a difference and likely to be less efficient as it was not designed to be this way. I suspect it is probably alright with the bronze filter, but if you are really afraid of the increased crankcase pressure then filling it with stainless steel is probably the way to go. THe problem is how much crankcase pressure is too much and I have not found an answer anywhere, it depends on the engine.
@@moremolecules yes , u r right , the problem i search almost all the internet and i didn’t found how much crankcase pressure for my car.
I think i will keep bronze filter and keep watching the engine and looking if there is oil come out from casket or not .
Thanks 😊
@@moremolecules hello friend, sorry for ask alot but i just thinking if it’s possible to make small holes in bronze filter with drill that will make different in kkmoon catch can ??