BMS Stinger Zero Maintenance OCC Review

[Luc343]

Yeah, would love to hear more about results

Me too. Maybe the results may be skewed as he does use wmi, which will keep the values cleaner just by itself.

 

[mbolan]

Seems like the installations are too horizontal. This can needs to drain therefore needs as much vertical orientation as possible. Is there potential to slug a puddle of collected fluid during hard decel when engine is under high vaccum and trapped fluid is slammed forward in the can? If mounted vertical it would never be a problem.

 

[ChaneRZ]

I ordered an extra PCV hose from Kia parts and I'm going to cut that so the OCC will be vertical. I don't want to cut my stock PCV hose.

 

[mbolan]

I have an OCC ordered along with a JB4, plugs, and CAI. So I'm glad to hear responses before mine gets installed. Is the reason you bought a hose from KIa because of the tapered shape?

 

[DusG88]

I personally don't think I would mount it vertically. I think it would lead to more water and fuel in the blowby to be returned to the sump.

Think of it this way. If it is on a slight tilt to the back, once entrapped liquids gather enough to make it back into the tube, they will. Before that point, the water and fuel that is caught with it will be sitting in the super hot OCC. This will allow it time to vaporize and not be returned to the sump, leaving only the oil to flow back once enough accumulates.


The can was not designed to always be empty, but rather to never have to empty it. A slight tilt as shown in the install docs achieve this without aiding water and fuel drainage back to your oil pan.

 

[sc-stinger]

I personally don't think I would mount it vertically. I think it would lead to more water and fuel in the blowby to be returned to the sump.

Think of it this way. If it is on a slight tilt to the back, once entrapped liquids gather enough to make it back into the tube, they will. Before that point, the water and fuel that is caught with it will be sitting in the super hot OCC. This will allow it time to vaporize and not be returned to the sump, leaving only the oil to flow back once enough accumulates.

The can was not designed to always be empty, but rather to never have to empty it. A slight tilt as shown in the install docs achieve this without aiding water and fuel drainage back to your oil pan.

My take:
I'm in agreement with @DusG88. I've checked the BMS OCC a few times after a 'spirited' drive and haven't really noticed much in terms of condensate.

Relative Angles:
The plastic PVC connector at the top of the manifold is angled down at approximately 30°. The catch can as mounted in my vehicle is angled down at approximately 15°. It's still a downward angle, and not 'horizontal'.

I don't think that mounting the OCC vertically makes much sense. As we discussed before, placement of this catch can means that it gets hot, which isn't a bad thing. Its still cooler than the engine, so vaporous oil would condense, but water vapor may evaporate more easily. That's conjecture of course.

The KGIS repair manual refers to the hose as a "vapor hose"... because that's really what it is, carrying blow-by gases with a mixture of water vapor, and a small amount of unburned fuel and oil.

PCV Hose Assembly:
That said, like @ChaneRZ I also just ordered an extra PCV hose assembly (P/N 26720-3L100). This was a special order part, and may take a couple weeks to arrive. It is a commonality part on Kia / Hyundai / Genesis with the Lambda II turbo. Note: I believe that that is the correct part number, maybe ChaneRZ can confirm if that's what he ordered too?

Why did I order the PCV hose assembly? Similar to ChaneRZ, I want to cut down the hose on the non-tapered side, because I don't like the bend / kink at the bottom of the hose (see the second picture on my previous post). If I could remove about 2in / 5cm or so, I think it would remove any question about unimpeded flow.

Any questions or thoughts, let me know.

 

[ChaneRZ]

^^^

Yup that’s the part I’ve ordered. I just want to cut mine to minimize the kink. I’m going to make it angled more and not really put the can vertically.

 

[mbolan]

Interesting. I didn't realize they were trying to use the OCC as a oil/water separator that only stopped oil. I thought it was more to slow down vapor velocity by increasing the flow area and thus have all droplets fall out of suspension before getting to the intake. Seems that if the vapor was having to travel uphill (more vertical) it would be even more beneficial to promote droplets to fall out of suspension. Not sure about the water evaporating inside of the OCC. The slurry is likely emulsified initially and then separated into oil/water after a period of time. Also just the constant high humidity level would not promote re-evaporation. Seems that oil floats on water once separated and that the floating oil film would encapsulate the water. Thereby preventing it from evaporating. All of my comments are total speculation of course. I'm only adding food for thought.
In Aarvix's original post pics the OCC looks to have a good 45 deg cant. That would seem to be a good compromise to promote everyone's theories and concerns.

 

[DusG88]

Interesting. I didn't realize they were trying to use the OCC as a oil/water separator that only stopped oil. I thought it was more to slow down vapor velocity by increasing the flow area and thus have all droplets fall out of suspension before getting to the intake. Seems that if the vapor was having to travel uphill (more vertical) it would be even more beneficial to promote droplets to fall out of suspension. Not sure about the water evaporating inside of the OCC. The slurry is likely emulsified initially and then separated into oil/water after a period of time. Also just the constant high humidity level would not promote re-evaporation. Seems that oil floats on water once separated and that the floating oil film would encapsulate the water. Thereby preventing it from evaporating. All of my comments are total speculation of course. I'm only adding food for thought.
In Aarvix's original post pics the OCC looks to have a good 45 deg cant. That would seem to be a good compromise to promote everyone's theories and concerns.

Good points. I was basing the evaporation concept on the high end OCC cans that route the coolant through the OCC prior to the intercooler to heat the can up and burn off the water/fuel. Those cans usually are positioned near the front so they don't get as hot as this one would so I assumed thats why there isn't a need for the piping. Could be wrong.

I think 45° is probably close to ideal. I personally am somewhat concerned about what actually gets returned to the oil pan and how it will impact oil cycles. I have not put mine on yet, but will do so 9n my 12,000 mile change. I'll be getting a Blackstone report on it focusing on blowby Content and I'll do another at 18,000 miles (6,000 with the OCC) and compare. The results of that will take a bit of time.

I have seen people get reports on oil straight from a OCC and it's not good oil, but what I want to know is if the quantity of returned oil is enough to significantly degrade the whole pan.

 

[mbolan]

My occ just shipped so I’m trying to avoid doing it nice because I did it twice

 

[bpang1]

I cut the 3" hose they include with it down to 2" as Terry suggested...I am pretty happy with it now...doesn't look like the stock hose is kinked after about 6 months of having it on.

 

[G80typeowner]

I know there's some discussion in the JB4 thread about this OCC, but it'll easily get buried and I figured it's worth having its own discussion. I'll go first!

The unit itself is very nice, machining and anodizing are well done and the two halves fit together nicely with a small o-ring to keep it sealed. Inside, one half has a conical taper to facilitate the "drain back" into the crankcase (please pardon the terrible photo)

View attachment 28207

Inside, there are two baffles clocked half a hole from each other. The outlet is not 100% blocked from the inlet, some daylight can be seen through the baffles. Time will tell whether oil droplets will make it through or not.

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My only critique of the unit is this:
The fasteners that hold the baffles in place were not installed with threadlocker. The PCV is upstream of the OCC, so if the screw were to work itself loose, the only thing keeping it out of the engine is the bend in the hose. I added some 242 loctite just to be safe.

View attachment 28210
View attachment 28211

Installation was super quick and simple, however there are no markings to indicate which end is the inlet/outlet. The online instructions cover this (plus it's pretty obvious if you unscrew the thing), but BMS might consider putting an arrow or "this side toward crankcase" nomenclature to further idiot-proof it.

The stock hose plus the OCC is a little long, but the taper of the OEM hose prevented me from trimming it. I may just replace the entire hose, but for now I made it work. I did have to remove the foam piece that was around the hose to keep it from kinking.

View attachment 28212

Overall I'm quite pleased with this piece. I'll open her up in a few hundred miles and report back.

I just ought a G80 3.3T Sport Pocket Rocket and did my homework which led me here.This is the best review for the BMS Zero Maintenance OCC I've found by far. Took me awhile to get here going through the Genesis forums etc.

Great review and a lifesaving Locktite observation!!!!!! Cudos!!!!

Regards,
G80typeowner

 

[oldmane]

I just cut the small hose BMS provides for the upper part, as most people. I didn't cut the stock hose.

I think that may be the difference. I didn’t cut the small hose that came with the kit. So the routing behind the other wire was possible. Also this alleviates the kink. As time goes on it sinks slightly lower because gravity so it’s angled down more with the longer hose. I wouldn’t want to cut the bottom hose from Kia as some stated it is tapered.

 

[dtrail7a]

If you installed this the wrong way what effect would it have? Do nothing as if it were just the stock hose? Or have negative effects? Asking for a friend.

 

[0zman99]

Any updated comments from people that have used this in there car? Has anybody opened it up to see one side more oily then the other?

 

[AtomicGTL]

bump

 

[turboAWD]

Any updated comments from people that have used this in there car? Has anybody opened it up to see one side more oily then the other?

I had unscrewed the two halves out of curiosity before I installed it, and I guess I didn't re-tighten it enough, and found some oil dripping off the can down onto the exhaust dp and smoking.. So it's definitely catching SOME oil. I've tightened it up, and no more smoking since.