I am considering installing an OCC on my 2013 MCS Roadster. Here are two that I am considering.

http://www.waymotorworks.com/bsh-n18-oil-catch-can-r55-r56-r57-2011.html

http://www.defendersofspeed.com/defe...catch-can-kit/

Any advice on these two or any others for that matter? Where to mount? Ease of installation? Fittings supplied? Use and maintenance, emptying etc?

 

I also meant to ask how much is collected and how often do you have to empty. How do you know when it needs to be emptied and what happens if it gets full and you don't empty it?

 

I just did the bsh, it was easier putting it on then taking the mini hose off!! Quality product, excellent fittings, easy install! Only been a week so nothing really collecting in can.. It dies cone with a dip stick to meadure how much is in it..

 

Just noticed that both of the links in my original post are evidently the same OCC, just different vendors any maybe different hardware.

 

are you sure turbos really need an OCC? because, your turbo NEEDS oil in it, all over, not just the lines. its actually kinda good for it to have some inside it, ect. it was my knowledge, that an OCC was only needed for a turbo if it has fairly high mileage.

i could be totally wrong, but thats my 2 cents.

also, both of those are REALLY expensive! wow. i mean, have you considered other options? i mean, it is just a metal can with 2 hoses attached. mine is made from an air compressor filter thats supposed to pull water out of the air. it works fine.

 

It's my understanding that direct injection is the reason you need an OCC and unless I am wrong, all direct injected MINIs have turbos. If I am right, there would be no reason to put an OCC on a non-turbo MINI.

 

I have 42K miles on my MINI. I recently took it to the dealer and asked them to check for carbon on the valves and they reported back saying it was really nothing there just some that has attached onto the valve. I said, "okay". I am going to install the BSH OCC next weekend but before I do it I'm gonna take a look for myself to see if it is as bad as I have seen some N14 engines. I've only seen one N18 engine where it looked bad but not worse then those N14 engines.

 

The N18s are not as bad as the N14s, but will still benefit from an OCC.

As for oil in the turbos - only place it should be is in the bearings. There shouldn't be any on the vanes - they're airfoils, and are supposed to be clean and dry. Nor should there be any oil in the intercooler. An OCC will reduce the amount of oil mist that makes it into the induction system, therefore keeping the inside of the turbo and the intercooler, along with the backside of the intake valves, cleaner than the stock configuration.

I'm partial to the DoS kit, which I believe uses the same basic can as the BSH, but has specific fittings for the N18 engine. The typical mounting location for the can is on a tab on the firewall, seen just right of the airfilter housing when you're facing the open bonnet.

Accumulation rate in the can is determined by how and how much you drive, as well as your local weather. Higher humidity climates will generally see a greater rate of accumulation. The level is checked via a dipstick built into the can. The DoS kit includes a syringe to evacuate the can. Letting the can completely fill is not good, as it can then allow the accumulated liquid to re-enter the intake system as a liquid, which would be much worse than the vapor that you're trying to prevent.

 

you can spend 200$+ if you want, but IMO, a "can" is a can. its just a metal can, just like this one for $20

http://www.ebay.com/itm/G35-G37-LOTU...c24c55&vxp=mtr

im not enforcing anything one way or another of course, just my thoughts!

 

That's such a bad/vague statement from your dealer/tech.

This was how my valves looked @ 39k miles w/ no tracking. I'm @ 47k miles and I've done several track days now, but I've also had a meth kit so I'm sure my valves aren't bad still. You really should consider getting the work done to clean out the valves.

 

Yeah your telling me, I was shocked how they said it, I couldn't even muster a word. I'm definitely thinking about doing the job myself within these next two weeks and installing a OCC right after. I'm gonna buy the catch can Saturday.

 

For the OP, I just check and drain the OCC every week. Because of the stupid dipstick, I have developed a routine:

Friday night pull the dipstick and leave it on the engine. Leave hood up so I don't forget.
Saturday morning, check the oil, empty the OCC, check tire pressure.

In the summer, I get hardly anything. In freezing temps, I get about 4 oz per week (80-90% water).

Have fun,
Mike

 

I have the bsh on my 2011 cooper s and I have drained it twice in the 30,xxx miles I have put on it. There has been no oil just really gross liquid in it, very runny consistency with horrible smell and a red/yellow color. I'm glad I have it but I wouldn't say its required on the n18.

Sean

 

Does the BSH Can come with the PCV block off for the passenger side hose? I was looking into either the NM Engineering one, or the BSH one. The NM Engineering can seems to come with a PCV block off for the passenger side hose, but I can't seem to find any info if the BSH Can comes with one......

 

The BSH oil catch can does not come with a block off for the passenger side PVC hose, they sell it separately.

http://www.bshspeedshop.com/bshstore...Boost-Tap.html

The N14 engine really needs that PVC hose blocked off in order for the oil catch can to be effective.

The BSH catch can has a vertical baffle that slows down the passage of oil vapor helping it to drop out in the can, most other oil catch cans don't have that baffle.

Dave

 

That's what I figured. I think rather than spending the $50 on the boost tap, I'm just going to buy the VW/Audi block offs for the passenger side and the intake manifold. I have no need for the boost tap.

Thanks for the clarification!

 

Wait what year cooper do you have? My understanding on the n18 was that you didn't need the blockoff or boost tap.

Sean

 

I have a 2007 S, N14 engine.

 

OK just making sure since the op was about a 2013.

Sean