|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
PCV (Positive Crankcase Ventilation) - saga continues :)
|
|
02-06-2012, 12:57 PM | #595 | |
Lieutenant Colonel
65
Rep 1,708
Posts |
Quote:
|
|
Appreciate
0
|
03-22-2012, 11:27 AM | #596 |
New Member
0
Rep 22
Posts |
AR Design Catch Can Update
Hey Everyone,
Just a quick update. I cleaned my valves last weekend as we've had some awesome weather here in NJ. Since installing the AR Designs Catch Can about 10,000 miles ago (see previous post with custom bracket and pics), my intercooler is perfectly clean and the catch can is catching all oil from PCV#1! However, the PCV#2 continues to dump oil directly onto the valves. In response to the posts from BSH, I would focus more of your development time on a fully integrated system that filters blowby from BOTH check valves instead of tapping into the valve cover. If someone develops that system, I am in! Further research with some tech guys I know has confirmed that the slight vacuum added by PCV #2 is beneficial to the gravity fed oil system of our turbos (this may arguably effect the overall turbo lifespan). This was covered a while back in this forum, and I originally had my CV#2 capped but have since uncapped it. My fear of tapping right into the valve cover to capture blowby gases is that you may loose some of the vacuum generated by the PCV#2 passage. In addition, I agree that the cyclonic separators obviously suck in this car, but they definitely separate SOME oil. This may be why the BSH prototype is catching so much oil. What are your thoughts? |
Appreciate
0
|
07-21-2013, 07:42 PM | #597 |
Banned
42
Rep 1,257
Posts |
Yes, I am trying to revive this thread, as it never got anywhere after all of it's attention. Has anyone looked into electronic vacuum pumps and electronic vacuum regulators to maintain a predetermined amount of vacuum throughout the rpm band and regardless of turbos used or boost, while blocking off the cv#2 that flows through the cyclone separators and back into the intake manifold?
The way it would work is, block off cv#2(intake manifold vacuum source), connect electronic vacuum regulator to cv#3(rear turbo inlet vacuum source), run hose from vacuum regulator to electronic vacuum pump, then run hose to to catch can/oil separator, place breather filter on other side of catch can. From what I have read here and elsewhere, ~10-13" vacuum is all we need to maintain for optimal conditions. I'm going to be replacing my valve cover gasket hear in the next month or so. I plan on taking all the measurements needed to model a redesign for the valve cover to eliminate the internal pcv ports in order to redirect them externally and also to accommodate a coil on plug cover like the Honda engines have. Later part should help with noise insulation(injector tick) and be a lot better looking than the factory version. I'll post pics once it's modeled and I should be able to get all the mill work done at work(fingers crossed). |
Appreciate
0
|
07-21-2013, 07:48 PM | #598 |
Banned
42
Rep 1,257
Posts |
Or possibly a wastegate style regulator using a spring to keep the valve closed to atmosphere unless the pump pulled a vacuum higher than the spring tension, opening the valve to pull outside air as well to keep the vacuum at a max and safe level.
|
Appreciate
0
|
07-21-2013, 10:14 PM | #599 |
Major
267
Rep 1,392
Posts |
I'm in the middle of gathering parts for a new mod i was going to test. Basically what you said about blocking off the "NA mode" portion of the pcv and running an exhaust venturi with a regulator for the vacuum. I may keep the occ in been to help with the oil going into the exhaust. My valves look like crap after 10k miles of driving after cleaning the valves and installing a occ. My stock turbos never really leaked oil. My occ caught about 10cc's of fluid in 10k. If call that healthy. The Little holes in the intake are soaked with oil.
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP . |
Appreciate
0
|
07-22-2013, 12:01 PM | #600 | |
Banned
42
Rep 1,257
Posts |
Quote:
I'm also curious to see what your car is sunning vacuum wise with the single turbo setup. That's one thing I'm definitely "concerned" about for when my single gets here. |
|
Appreciate
0
|
07-22-2013, 01:02 PM | #601 |
Major
267
Rep 1,392
Posts |
It may be a little while. I have a lot going on in the next month but I'm doing a lot of the research and thought behind it so hopefully it's a one and done deal. My idea for it is i have 3 places i could put the venturi which is about the size of a o2 bung. One would be where the exhaust O.D. is 3" off the turbo. 2 would be where the exhaust splits to mate with the factory exhaust with the O.D. being 2.5" or 3 further aft where my VRSF goes to 3.5". Ideally. The smaller diameter the better since velocity will increase making the venturi more effective. Down side is heat. The smaller diameter the closer to the turbo it is. The venturi I'm looking at is vibrants pcv venturi. All the reviews I've read people are saying how much vacuum it's pulling. Even installed on v8's. It also utilizes an-10 so i could make a rigid line extending away from heat before it turns into a rubber hose.
http://vibrantperformance.com/catalo...oducts_id=1243
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP . Last edited by 3000GT MR; 07-22-2013 at 01:16 PM.. |
Appreciate
0
|
07-22-2013, 01:06 PM | #602 |
Major
267
Rep 1,392
Posts |
Turbo set up should make a difference. Our main concern is off boost. Vacuum numbers should all be about the same. During boost i bet the single can pull more vacuum just due to the design. You have 1 big vacuum pump vs 1 itty-bitty vacuum. I plan on just running one pcv system for both modes, hence the exhaust idea
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP . |
Appreciate
0
|
07-23-2013, 02:44 PM | #603 | |
Banned
42
Rep 1,257
Posts |
Quote:
|
|
Appreciate
0
|
11-30-2014, 06:20 PM | #604 | |
New Member
0
Rep 12
Posts |
Quote:
|
|
Appreciate
0
|
12-01-2014, 06:56 AM | #605 | ||
Major
267
Rep 1,392
Posts |
Quote:
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP . |
||
Appreciate
0
|
12-01-2014, 09:06 AM | #606 | |
Major
34
Rep 1,093
Posts |
Quote:
__________________
07 335XI (A008006) 6AT ~94K miles JB4 G5 ISO VSRF DP's
09 135I M (VK80379) 6MT. Race Project car. 1) Install Cobb/piggyback? and Motiv 600 Kit[HTA3076R w/ tial .82] 2) JRZ or Moton suspension. 3) Build high flow intake manifold with multi-port fuel and relocate OFH 4) Build full cage 5) Complete staged twin setup with HTA4205R [w/Tial 1.16] 6) Complete dry sump system |
|
Appreciate
0
|
12-01-2014, 09:24 AM | #607 |
Major
267
Rep 1,392
Posts |
Vacuum sources all stayed the same. Only difference is the addition of a custom catch can that is really unrestricted. I don't anticipate there being a vacuum difference but will eventually measure.
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP . |
Appreciate
0
|
12-01-2014, 10:12 AM | #608 |
Major
34
Rep 1,093
Posts |
Yeah I meant the literal valves ie valve cover and crankcase. PWR hungry's test show positive pressure and tony's motor was blowing oil everywhere when his rings started going. I'm just not sure how much vacuum a venturi will pull on this motor.
__________________
07 335XI (A008006) 6AT ~94K miles JB4 G5 ISO VSRF DP's
09 135I M (VK80379) 6MT. Race Project car. 1) Install Cobb/piggyback? and Motiv 600 Kit[HTA3076R w/ tial .82] 2) JRZ or Moton suspension. 3) Build high flow intake manifold with multi-port fuel and relocate OFH 4) Build full cage 5) Complete staged twin setup with HTA4205R [w/Tial 1.16] 6) Complete dry sump system |
Appreciate
0
|
12-01-2014, 12:02 PM | #609 |
Major
267
Rep 1,392
Posts |
Who said anything about me actually using a venturi? You'd be very surprised how simple the solution could be
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP . |
Appreciate
0
|
12-01-2014, 06:39 PM | #610 | |
New Member
0
Rep 12
Posts |
Quote:
Thanks for the reply. I'm getting ready to start assembling the parts to do this and didnt want to reinvent the wheel if a proven system was already working. |
|
Appreciate
0
|
12-02-2014, 04:55 PM | #611 | |
Banned
43
Rep 303
Posts |
Quote:
Factory spec is around 5" vacuum. A proper non OEM solution would maintain 5-8" vacuum throughout the entire operating range. |
|
Appreciate
0
|
12-03-2014, 06:45 AM | #613 | ||
Major
267
Rep 1,392
Posts |
Quote:
__________________
Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!
335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP . |
||
Appreciate
0
|
12-03-2014, 10:08 AM | #614 |
Banned
43
Rep 303
Posts |
Tony is relying on the stock vacuum system, yes. However, Tony is also starting to see how that is not a good idea as well. See if he'll chime in about the woes he's had.
|
Appreciate
0
|
03-11-2019, 12:26 PM | #615 |
Registered
0
Rep 2
Posts |
Catch Can design
Hello folks,
I'm part owner of Velocity Performance Engineering in Dallas TX. We about to begin development of a new series of catch cans using real engineers rather than the usual junk built by a fellow that thinks he's an engineer. I would like to gather some varied data from multiple users. I have a series of data that would be beneficial to the design. Some of this we are collecting on my 2011 BMW Z4 Sdrive35is, but my Z is heavily upgraded and may not prove to be the best example. The following are the data I could use. MIN Normal Max Operating Temperature (F) Operating Pressure (psig) Gas flow rate (lb/hr) Gas density (lb/ft^3) Gas viscosity (cP) Liquid flow rate (lb/hr) Liquid density (lb/ft^3) Liquid viscosity (cP) Liquid surface tension (dyn/cm) I would appreciate any help you fellows are able to give in collecting a large sampling. Thanks |
Appreciate
0
|
Bookmarks |
|
|