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BMW 3-Series (E90 E92) Forum
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335d PCV Catch Can Question
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07-25-2013, 03:28 PM | #67 | |
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yes, research led to it. Start with the easiest option and work your way down. Ideally blocking the EGR and venting the CCV to atmosphere would be the easiest since it would only require a vent line and unplugging the EGR. |
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07-25-2013, 07:20 PM | #68 |
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This subforum is becoming much less fun of late...mostly thanks to the anti-constructive efforts of a few.
@TDIwyse, I pulled my charge pipe and took some pics incl. what I could get of the EGR...will post when I have the opportunity. For now, I will say that I expected the carbon on the EGR, but not oil up to and beyond the throttle body...prevent is looking quite nice. I'm definitely looking forward to seeing your setup @335dwagon! |
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07-25-2013, 07:27 PM | #69 | |
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Not sure about the purpose of the heater except it may be there because of us Canucks living in the cold, but I doubt it is there to vaporize the oil mist. Question is that with the available vacuum how difficult will it be to get a catch can that will work without screwing up the original design pressure drop. That section of plastic tubing looks to be quite short.
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07-25-2013, 08:10 PM | #71 |
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Likely not a simple install/design (hose only) and not enough of a market share to justify R&D.
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07-25-2013, 08:38 PM | #72 | |
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Hopefully don't get in trouble for linking to another forum... |
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07-25-2013, 09:46 PM | #73 | |
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07-25-2013, 10:01 PM | #74 | |||
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07-26-2013, 07:11 AM | #75 | |
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07-26-2013, 07:15 AM | #76 |
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1st Response from Wyatt from Arrington performance:
Axel, Thanks for your interest in Arrington Performance. As far as the BMW diesel I am not sure if they diesel applications use the same pcv venting systems. We focus mostly within the late model hemi applications. However our catch can has been used on other vehicles that the users have retrofitted them to work. It’s pretty universal if you can get your mounting down and trimming the hose length to fit but am not sure on your BMW diesel application. Thanks, Wyatt Technical Sales Arrington Performance phone: 866.844.1245 ext: 3-121 Fax: 276.666.6794 email: jon.wyatt@shophemi.com website: www.shopHEMI.com 2nd Response from Him: Sounds good, they are pretty well universal if you can find the line length and routing. Thanks! Wyatt Technical Sales
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07-26-2013, 07:28 AM | #77 |
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Indeed. Definitely agreed there.
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07-26-2013, 07:31 AM | #78 | |
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I believe you are correct on the heater. The TDI guys have reported issues with catch cans (and their stock intercoolers) freezing up due moisture content in the blow by gases. Think this is part of the reason the 335d stock crankcase vent pipe is ran along the top of the engine like it is ... to keep it warm. The flow rating on the "catch can" and its piping should be choosen such that it will be low enough to allow the proper amount of blow by to pass without causing excess restriction. Otherwise excess pressure buildup in the crankcase can occur which is not a good thing. That's why I'd be a little concerned with just using the 335i setups as I haven't seen flow data on them. Regarding trying to vent it to the atmosphere ... if the engine is designed for that then that would be fine. My 2004 Cummins Ram and the Cummins B3.3T I repowered my old Jeep Wrangler with do this. But if the crankcase venting was designed such that it relies on vacuum from the intake to help pull crankcase gases out ... I'd be cautious of damaging the internals of the engine without seeing hard data on the effectiveness of this approach. It might work great, but I haven't seen any evidence of that yet. Also, the 1/4 mile track I've been to specifically require you not to have the crankcase vented to atmosphere due to safety issues with the blow by oil getting on the track surface. |
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08-02-2013, 09:42 AM | #79 |
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08-02-2013, 10:08 AM | #80 |
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Spoke to Turbo Eddie he will try to get into our site this weekend and become another promising informative person, and as to a future build on a catch can, woohoo!!!
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08-02-2013, 04:43 PM | #81 | |
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Thought the following might help the discussion a little bit. All of this is taken from "BMW Advanced Diesel Technology" dated September 2008.
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08-02-2013, 05:37 PM | #82 |
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08-05-2013, 10:24 AM | #84 | ||
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Apparently you have a reading comprehension problem too - that's not what I asked.
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Good luck with your "diesel catch can!" |
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08-05-2013, 08:58 PM | #85 |
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http://en.wikipedia.org/wiki/Troll_%28Internet%29
In Internet slang, a troll (/ˈtroʊl/, /ˈtrɒl/) is a person who sows discord on the Internet by starting arguments or upsetting people,[1] by posting inflammatory,[2] extraneous, or off-topic messages in an online community (such as a forum, chat room, or blog), either accidentally[3][4] or with the deliberate intent of provoking readers into an emotional response[5] or of otherwise disrupting normal on-topic discussion.[6] |
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08-05-2013, 09:17 PM | #86 |
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So, I'm back from vacation. Did a little playing around tonight. Unfortunately one of the pieces I ordered (the OEM breather tube) didn't show up. The email I read yesterday from mid-week from Turner said they couldn't get it ... that was too bad.
The space is tight in the area close to the breather tube and intake connection. Here's what I did as an experiment to see what kind of space could be created. Removed stock intake air box. That freed up a lot of space. Much more than one full sized bottle of Jack. Then put in an AEM dry element cone filter (I don't like oiled filters). Leaves enough space for the provent. Weighed the stock vs the AEM/provent combo and the stock system is more than 1 lb heavier. So at least this won't add weight. I was concerned about increased intake air temps so I did some BT data logging tonight over the same interstate loop I had previously done a few weeks ago. Tonight was 77F (~25C) and previous data was 73F (~23C). At speed there was no measurable difference above the ambient temperature differences. And this is without a heat shield, just the cone filter. Also did a couple full throttle pulls in 3rd gear and the Torque App HP/TQ numbers are right in line with stock intake numbers, so no statistically significant differences observed. So, it appears this might be a viable avenue to pursue in terms of having space to install a way to prevent the oil getting back into the intercooler/intake without increasing emissions of the vehicle. At least for those interested in installing some such device. Which is the reason for the thread ... |
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08-06-2013, 05:45 AM | #87 |
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so youre saying TDi that having a cone filter w/o cover really doesnt affect performance. interesting cause i had used a dry cone filter, AMSOIL BTW, and the car responded very welll but I was concerned that due to the engine being closed up it would alternatively affect car performance. BTW give the SN for that cone filter AMSOIL's cone filter is to long for the space we have.
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08-06-2013, 07:39 AM | #88 | |
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I did leave part of the air ducting in place (the ducting above the radiator which pushes air towards that front passanger section). I also have a thermometer probe placed by the filter and it shows ambient air temps flowing into that section. If I move the probe to the back of the filter, closer to the turbo's, the temp is above ambient. But there's so much air flowing in at speed that the air temp measured after the intercooler isn't any higher than with the stock setup. When you are idling at a stop, the IAT's do increase. But it did this with the stock setup as well (it's sucking air from right above the radiator which is very hot). |
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