Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 07-05-2014, 07:49 PM
blue boy's Avatar
blue boy blue boy is offline
Officially Welcomed to the 'Fest
Location: south of east
 
Join Date: Nov 2013
Posts: 310
Mein Auto: 2011 328ix
Direct injecdtion prob solved by some car makers

http://www.edmunds.com/autoobserver-...-adopters.html

what is Europe waiting for?
__________________
surely goodness and mercy will follow us all the days of our lives

2011 328IX
Ford 150
Gen 3 Prius
Goldwing Trike
Mustang with mods
Reply With Quote
Advertisement
  #2  
Old 07-05-2014, 10:23 PM
sptt144's Avatar
sptt144 sptt144 is offline
Officially Welcomed to the 'Fest
Location: Orange County, Ca.
 
Join Date: Aug 2012
Posts: 1,158
Mein Auto: 2009 335i
I don't see where it was "solved". I must have missed something. Audi says its latest models have no "reported" build up but nothing shows that it was solved that I could see...
Reply With Quote
  #3  
Old 07-05-2014, 11:45 PM
anE934fun anE934fun is offline
Officially Welcomed to the 'Fest
Location: S.F. Bay Area
 
Join Date: May 2008
Posts: 6,807
Mein Auto: 2010 335d
Quote:
Originally Posted by sptt144 View Post
I don't see where it was "solved". I must have missed something. Audi says its latest models have no "reported" build up but nothing shows that it was solved that I could see...
Only thing that truly 'solves' the issue is some sort of filter/trap that isolates the crankcase gases and removes what precipitates out as crud on the intake valves. Something like a catch can on steroids.
__________________
Reply With Quote
  #4  
Old 07-06-2014, 10:47 AM
BashedBarrique BashedBarrique is offline
Officially Welcomed to the 'Fest
Location: Carmel Indiana
 
Join Date: Jan 2013
Posts: 729
Mein Auto: 2006 325i
Quote:
Originally Posted by anE934fun View Post
Only thing that truly 'solves' the issue is some sort of filter/trap that isolates the crankcase gases and removes what precipitates out as crud on the intake valves. Something like a catch can on steroids.
Venting the crankcase gases directly to the atmosphere would also solve the issue, and it is what was done before PCV valves were mandated in the 70's. I wonder how problematic the release of the tiny amount of oily vapor would be?
Reply With Quote
  #5  
Old 07-06-2014, 01:49 PM
anE934fun anE934fun is offline
Officially Welcomed to the 'Fest
Location: S.F. Bay Area
 
Join Date: May 2008
Posts: 6,807
Mein Auto: 2010 335d
Quote:
Originally Posted by BashedBarrique View Post
Venting the crankcase gases directly to the atmosphere would also solve the issue, and it is what was done before PCV valves were mandated in the 70's. I wonder how problematic the release of the tiny amount of oily vapor would be?
The car would fail the hydrocarbon emissions test. Almost guaranteed to throw a code (crankcase pressure test fail). There would be eau de hydrocarbon that surrounded the car, which could cause problems if you were pulled over for even something as minor as a brake light being out. Your car could be impounded for emissions violations. Things could get expensive real fast.

The first emissions measure that was implemented for cars starting with the 1967 model year if memory serves was to vent crankcase vapors into the combustion process using PCV valves.

Disabling the PCV function would solve the carbonization problem, but liability for intentional disabling of the emissions system would far outweigh the costs of periodic de-carbonization.
__________________
Reply With Quote
  #6  
Old 07-06-2014, 02:56 PM
hondo402000 hondo402000 is offline
Officially Welcomed to the 'Fest
Location: Charlotte, NC
 
Join Date: Nov 2012
Posts: 1,876
Mein Auto: 2007-335 HTC
Quote:
Originally Posted by BashedBarrique View Post
Venting the crankcase gases directly to the atmosphere would also solve the issue, and it is what was done before PCV valves were mandated in the 70's. I wonder how problematic the release of the tiny amount of oily vapor would be?
although I don't like government regulations, if you add up all the cars in the US then a few drops becomes thousands of tons of pollutants per year,
with the invention or regulation of PCV systems, and cleaning up the blow by gases one result was that engine oil last a whole lot longer.

My 71Triumph TR6 WO PVC, the oil is black after 3000 miles


give then time and they will come up with a system to keep valves clean

Maybe Teflon coat the valves and intake?????
Reply With Quote
  #7  
Old 07-06-2014, 03:04 PM
anE934fun anE934fun is offline
Officially Welcomed to the 'Fest
Location: S.F. Bay Area
 
Join Date: May 2008
Posts: 6,807
Mein Auto: 2010 335d
Quote:
Originally Posted by hondo402000 View Post
although I don't like government regulations, if you add up all the cars in the US then a few drops becomes thousands of tons of pollutants per year,
with the invention or regulation of PCV systems, and cleaning up the blow by gases one result was that engine oil last a whole lot longer.

My 71Triumph TR6 WO PVC, the oil is black after 3000 miles
Ever wonder why the manufacturer specified a 3,000 mile oil change interval?

Quote:
give then time and they will come up with a system to keep valves clean

Maybe Teflon coat the valves and intake?
????
It comes down to how much does the system to keep the valves clean cost versus the cost of the walnut blasting every 30K-ish miles. First 30K blasting is on BMW. The follow-on blasting would be paid for by the customer (either directly out-of-pocket or through purchase of extended maintenance coverage).

Personally, I think the solution is to be found in a super efficient catch can or filter that traps at a molecular level (think along the lines of GoreTex) that is replaced as a maintenance item.
__________________

Last edited by anE934fun; 07-06-2014 at 03:05 PM.
Reply With Quote
  #8  
Old 07-06-2014, 03:18 PM
misterjim misterjim is offline
Registered User
Location: Pittsford, NY
 
Join Date: Jan 2009
Posts: 75
Mein Auto: 08 335i 6MT convertible
It does sound like ford and gm have solutions for build up by timing of the injection pulse. The article also mentions re-designing the PVC system.
Reply With Quote
  #9  
Old 07-06-2014, 06:19 PM
blue boy's Avatar
blue boy blue boy is offline
Officially Welcomed to the 'Fest
Location: south of east
 
Join Date: Nov 2013
Posts: 310
Mein Auto: 2011 328ix
its a big $ for service dept
i drove the new 4 turbo and like the response but will not buy one at this time
THEY COULD PORT THE INTAKE AND DO A 10K CLEANING BY INJECTION AND SOLVE THE ISSUE BUT THAT WOULD BE EASY.
__________________
surely goodness and mercy will follow us all the days of our lives

2011 328IX
Ford 150
Gen 3 Prius
Goldwing Trike
Mustang with mods
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 02:00 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms