2nd Gen R56 Cooper S Most liked posts in thread: How to screw up an OCC install

  1. oldbrokenwind

    oldbrokenwind Active Member

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    #11 oldbrokenwind, Jul 23, 2013
    Just finished a dual OCC install, and cleaned up my turbo air inlet plumbing. Bought one of the Saikou Michi dual OCC's, with a Drain Extension kit. Here's a photo. They also fab'd the 3" tee's for me.

    Now to put some miles on it and check oil consumption.

    Connecting the rear PCV hoses could be a lot easier if there was a fitting with the PCV connection on one side and a hose connection on the other. The N18 uses one, but it's attached to the hose and not available separately from the dealer. Anyone know of a source?
     

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  2. HurricaneDave

    HurricaneDave New Member

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    #12 HurricaneDave, Jul 23, 2013
    Oldbrokenwind's old Single BSH OCC installed on my N18.


    Thanks again for the help on the install!
     

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  3. DneprDave

    DneprDave Well-Known Member
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    #7 DneprDave, Apr 30, 2013
    I have an oil catch can on the turbo PCV line and a BSH dual boost tap blocking off the PCV line to the throttle body. My car uses about a pint of oil every 5000 miles.

    I wonder if those who have high oil consumption with this setup have a malfunctioning PCV valve?

    Dave
     
  4. Crashton

    Crashton Club Coordinator

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    #15 Crashton, Dec 28, 2013
    If 2 is good, isn't 3 moar better???
     
  5. Metalman

    Metalman Well-Known Member
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    #2 Metalman, Apr 28, 2013
    Good read....
    I too have the two Audi block off caps in place and have been monitoring the effectiveness of the single OCC on the turbo inlet side.... So far no oil smell.... but that could be a matter of time until that shows up. I did have a case of the valve cover relief valve burping (once) but I attribute that to the cold winter temperatures and the fact that I wasn't reaching correct operating temperatures by the time I got to work (short trip). I suspected I was generating some quantity of "mayonnaise" in the PCV maze. With another recent oil change and warmer temperatures.... no "mayonnaise" and no burping of the relief valve....
    When I still had the rear OEM line connected to the intake manifold at the throttle valve and the OCC connected to the turbo inlet, I collected large quantities of water and oil distillate...

    I think you are correct with the rear plug and the back pressure at the turbo oil bearing...

    At this point I'm headed in the direction of a second OCC modification to my original OCC on the cold side turbo attachment. The two canisters will be separate but attached.... One will catch the condensate on the turbo side and the second (new) will catch the condensate at the rear valve cover leading to the intake manifold..... In effect going back to the OEM line connection but having one OCC can spliced into each line....

    Very similar to what is offered by Saikou Michi (that makes a dual specific for the N14 engine)
    1_zps08aa4031.jpg

    Saikou Michi Co. 2013
    PC280065_zpsc7ef66c0.jpg

    Thanks for posting your finding oldbrokenwind....

    I will be interested in how effective you are able to catch the oil vapors on just the cold turbo connection.... I suspect the vacuum that's present on the rear connection when off boost helps with movement of the oil laden fumes...
     
  6. oldbrokenwind

    oldbrokenwind Active Member

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    #3 oldbrokenwind, Apr 28, 2013
    My "tee" connection won't allow me to separate the source of OCC contents --- both vents feed the same OCC and the OCC output feeds the turbo input. The manifold input is still capped. My results are still preliminary - not a lot of mileage on the tee connection, but looking positive so far --- the oil consumption problem is gone! There is still a bit of vacuum on the OCC, from the turbo sucking air, just not as much as the manifold vacuum provides. I don't plan to hook up a vacuum gauge to measure it. I've got a gauge, but getting the hose and gauge where the driver / passenger can see it while driving, is too big a nuisance. I'm content with the end results.

    From your OCC results, your driving habits seem to include more "spirited" driving habits than mine. But then, I'm located close to the middle of nowhere --- 15 miles to the nearest major community.

    I should have done more research on OCC's. The Saikou Michi dual system appears to be ideal for the N14. A lot better than two separate single input cans. Space is scarce under the hood.
     
  7. Metalman

    Metalman Well-Known Member
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    #4 Metalman, Apr 28, 2013
    Heh Heh.... You noticed that.....:D

    I'm tempted to do the "Tee", just as a trial... I have the T fitting... I may do this while I'm modifying my second OCC....

    I need to "Slice & Dice" this one to get it to fit and I'll need to reposition the two fittings to minimise the bends to the hose...

    [​IMG]

    I plan to attach the second can at about the 11 o'clock position to this one that's already installed...

    [​IMG]

    Just enough room.... I think...

    [​IMG]
     
  8. oldbrokenwind

    oldbrokenwind Active Member

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    #5 oldbrokenwind, Apr 28, 2013
    I've got a couple cheesy pics of my tee fitting and hose (both ends) in my "garage". Eventually, I'll get better pics. The rear connection is strictly homemade --- one hose (the one to the tee) inside another, with the larger hose on the dual port adapter. I stuffed a metal pipe inside the smaller hose, to give it some rigidity --- for clamping the two hoses together.

    Nice you have a strut bar for mounting things. I'm working on finding one to fit around my K & N Typhoon air filter.
     
  9. countryboyshane

    countryboyshane New Member

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    #6 countryboyshane, Apr 30, 2013
    I ran into the same problem when I did the PCV delete mod on the intake manifold and front of the engine thinking all would be routed effortlessly to the turbo. Had the exact same problem with oil consumption and it was very visible. Thick grey smoke in instances. I ended up going back to the OEM PCV system and cleaned out the turbo, intercooler, and all boost tubes in the winter months.

    Cleaning the intake is not that big of a deal to me and I'd rather have the car not guzzling oil.
     
  10. Jason Montague

    Jason Montague New Member
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    #8 Jason Montague, Apr 30, 2013
    :cornut: Me Too Dave.(08 R56 BRG MCS/JCWm):Thumbsup:

    Jason
     
  11. oldbrokenwind

    oldbrokenwind Active Member

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    #9 oldbrokenwind, Apr 30, 2013
    Before adding the OCC, my oil consumption between changes wasn't measurable. 1 pint / 5000 miles isn't significant enough to worry about either. It would be interesting to know how dry your turbo air intake chamber is --- should be no oil film anywhere, if there's no back pressure.

    There is a possibility my PCV system is malfunctioning, but it's doubtful. The system seems to be functioning as described in the Bentley manual (pages 130-53 & 130-54). When the rear vent is blocked, pressure builds up until the other vent opens.

    Again, I believe it's all dependent on driving habits. Mine are extremely "tame".
     
  12. oldbrokenwind

    oldbrokenwind Active Member

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    #10 oldbrokenwind, Apr 30, 2013
    Here's the two pics promised earlier. One showing the hose mess at the dual port adapter, the other showing the OCC and "tee" connection.

    IMG_1513.jpg

    IMG_1514.jpg
     
  13. oldbrokenwind

    oldbrokenwind Active Member

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    #13 oldbrokenwind, Dec 28, 2013
    Here's an embarrassing update --- the dual OCC was NOT a fix! Turns out that my PCV was shot, preventing crankcase pressure from escaping to the turbo inlet. Changing the valve cover seems to have fixed it ('course, that's what I said about the dual OCC), but since I seldom "get on it", it's still up in the air.

    Here's a link to the thread that educated me --- http://www.motoringalliance.com/forums/cooper-s/19615-rising-crankcase-pressure-when-using-bsh-occ.html#axzz2onnEIWBx maybe it'll help.
     
  14. Metalman

    Metalman Well-Known Member
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    #14 Metalman, Dec 28, 2013
    I'm going to suggest now with the new valve cover and correctly operating PCV valve, there is still some benefit with the dual OCC in its ability to collect the oil fumes that would cause the carbon buildup on the intake valves...