N62 Oil Catch Can

[Frankiesayrelax]

So I’ve searched high and low for a thread/write up/ YouTube video detailing a catch can install on the N62 engine. Plenty abound for M54s, M62s, N55s, but I have yet to come across on for the N62 which has a slightly differing CCV system than that of the older E53’s. Anyone have a lead on a thread/write up/video/personal experience with an install for a E53 with the N62 Engine? Thanks in advance. I’ve attached realoem’s diagram of my engine’s CCV system below.

https://www.realoem.com/bmw/images/diag_9t01.jpg

[amancuso]

Hey, just curious, what's the point of this?

[Frankiesayrelax]

Well the general impetus behind oil catch cans (OCC) is to keep oil from returning to the intake manifold (if I’m not mistaken). Often BMW CCV systems may become clogged and fail to do that causing oil to burn in the engine and eventually make its way out through the tailpipe as grey/blue smoke. Something I am experiencing now, along with oil in my manifold. However I’m not sure if an OCC would be implementable on my particular application so I’ve turned to the good folks on xoutpost for any info/advice!

P.s. of course, there are plenty of reasons why your BMW may be smoking (e.g., torn CCV valve diaphragm, worn/cracked valve stem seals, etc) but this is one option/solution I’m currently investigating.

[amancuso]

Originally Posted by Frankiesayrelax

Well the general impetus behind oil catch cans (OCC) is to keep oil from returning to the intake manifold (if I’m not mistaken). Often BMW CCV systems may become clogged and fail to do that causing oil to burn in the engine and eventually make its way out through the tailpipe as grey/blue smoke. Something I am experiencing now, along with oil in my manifold. However I’m not sure if an OCC would be implementable on my particular application so I’ve turned to the good folks on xoutpost for any info/advice!

P.s. of course, there are plenty of reasons why your BMW may be smoking (e.g., torn CCV valve diaphragm, worn/cracked valve stem seals, etc) but this is one option/solution I’m currently investigating.

N62s don't really have that problem. 99% of the time if your N62 is smoking, it's because of the Valve Stem Seals.

You might have to replace the CVV diaphragms though. https://www.ebay.com/p/237920341?iid...waAlJHEALw_wcB

[Frankiesayrelax]

Well I’ve gone and done it. I installed a catch can on the passenger side crankcase (with the intention of installing a second on the drivers side). It was a simple procedure, well see if that helps with my smoking issue although, as it’s been noted, it’s probably side to valve stem seals. BTW, I used the original connectors taken from the CCV hose.

[$panky]

Amancuso- Every body and their mama know about pcv/ccv valves and valve stem seals on the n62��.

Frankie, you sir just might be onto something. I'm gonna stay tuned to this post, I've being wondering the same thing(occ on an n62).

[Purplefade]

Nice job! And a great diy type for anyone who wanders in in the future, I believe you may be a pioneer on the N62 ensign

Definitely keep us posted on your success but I can sadly confirm that when I noticed mine smoking and realized I was “that guy with the mosquito fogger” at every traffic light... I tried everything, additives, different oil, different oil with additives and vss “softeners”... and ultimately ended up fully resolving my issue by replacing the vss and everything in their path as I went through the process.

Happy to say that just under $600 and about 80 hours later that my truck was as good as new - actually I think better

Keep us posted and if it does come to vss, their is huge knowledge on this board that I am sure will all be happy to help!


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[amancuso]

Originally Posted by $panky

Amancuso- Every body and their mama know about pcv/ccv valves and valve stem seals on the n62��.

Frankie, you sir just might be onto something. I'm gonna stay tuned to this post, I've being wondering the same thing(occ on an n62).

Hahaha, I know. Just saying that smoking at start up and after idling is always VSS. So many people try to come up with other fixes but always end up being in the same boat as us all with the VSS issue. If you look at the total cost for VSS, and all the gaskets that get replaced in the process, it's not such a ridiculous cost. I've seen prices from 2500-3000. It's worth it.

[Frankiesayrelax]

Quick update:

After idling for ten minutes burn off is greatly reduced in the right exhaust bank (as compared to the left) where usually it is very thick. This is an encouraging improvement (although as noted above it’s probably not the only cause of this issue nor a complete solution/fix). However, after I order and install the second OCC, I’ll see if the left exhaust bank exhibits reduced smoking after idle as well.

On another note, I’ve found that disabling the vanos solenoid system (I.e, unplugging all four solenoid connectors) completely eliminates the smoking. (Yet for this OCC experiment they remain plugged in and active) Any thoughts on this guys?

[Purplefade]

Unplugging the valvetronic sets the engine into default lift mode so that it runs and idles, though I don’t think you’d be able to accelerate or drive it “sportingly”. That said, discounting the valvetronic does make some sense in the reduced smoke as I think it defaults to a minimum lift spec for engine operation which may equal less intake charge which would mean less oil intake as well.


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