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 > 5 Series > E60 (2004 - 2010)

E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 05-21-2006, 02:36 AM
Suraj Suraj is offline
Officially Welcomed to the 'Fest
Location: Issaquah, WA
 
Join Date: Apr 2006
Posts: 230
Mein Auto: vw
Engine design, rev limiter, free revving..

I am planning to ED a 530iA soon. This will be my first BMW. I have a set of questions

1) BMW Engine/transmission design really intrigues me and I want to know a lot more about it. Please point me to some good sources (preferably meant for dummies so that content is easy to understand) where I can find detailed information on topics like direct injection, forced induction, engine management maps, automatic transmission science, turbo charging, super charging, torque vs HP concerns etc. The information on bmwusa.com and bmwworld.com are good starting points which I have already read and I want to know more.

2) It is said that BMW I6 engines are free revving. In my test drives I have felt what it means, you just floor and the engine revs without hesistation. But what causes an engine to be free revving? Why isn't some other engine like a Ford free revving?

3) What is the rev limit on a 530iA? Is it dependent on the gear you are in?

4) In Steptronic with manual mode, why doesn't the engine just upshift when you have hit the rev limit?

5) How much is the breakin RPM on a 530iA? I have heard some people say 4K while others have said 5.5K. What is the maximum speed you can attain at such RPMs? I am thinking of reaching close to that speed on the autobahn during ED.

6) What needs to be 'broken-in' in an engine? Engine is mostly metal and oil, so it should be set to perform to the fullest from day 1? Am I missing something basic here?
Reply With Quote
Ads by Google
  #2  
Old 05-22-2006, 09:59 AM
Suraj Suraj is offline
Officially Welcomed to the 'Fest
Location: Issaquah, WA
 
Join Date: Apr 2006
Posts: 230
Mein Auto: vw
Awaiting replies..
Reply With Quote
  #3  
Old 05-22-2006, 10:31 AM
revlis240 revlis240 is offline
Officially Welcomed to the 'Fest
Location: Socal
 
Join Date: Apr 2006
Posts: 319
Mein Auto: SC400, 330Ci, 550i
1) www.howstuffworks.com www.google.com

2) the engine has double VANOS and 4 valves per cylinder, this causes the engine to breathe easier than a fixed timing/valve lift 3 valve per cynilder (example) ford engine

3) 7000 (probably?)

4) because youre in manual mode and you have control. bouncing off revlimit wont break the engine

5) just drive it normal

6) just like brake pads and rotors, the surfaces on the piston rings must mate to the cylinder walls. there are different theories on breakin in procedure, i tend to follow the "drive it normal w/ few spurts to 5k" theory

Abe
Reply With Quote
  #4  
Old 05-22-2006, 10:39 AM
Ågent99's Avatar
Ågent99 Ågent99 is offline
Moderator, 5-Series
Location: Bay Area, CA
 
Join Date: Jan 2002
Posts: 5,931
Mein Auto: Trek 6500 MTB
Quote:
Originally Posted by Suraj
I am planning to ED a 530iA soon. This will be my first BMW.
Congrats! You will love it and the trip!

Quote:
Originally Posted by Suraj
3) What is the rev limit on a 530iA? Is it dependent on the gear you are in?
6800 RPM I believe...maybe 7200. The rev limit is the rev limit...doesn't matter what gear you are in...it doesn't change dependent upon the gear in the tranny.

Quote:
Originally Posted by Suraj
5) How much is the breakin RPM on a 530iA? I have heard some people say 4K while others have said 5.5K. What is the maximum speed you can attain at such RPMs? I am thinking of reaching close to that speed on the autobahn during ED.
To be sure, ask when you pick up the car and check the manual but it usually is 4500 RPM that you should not go past (speed is irrelevent, it is RPM that you should watch). That kind of room will allow you easily to get past 100 mph in 6th gear.
__________________
2001 530i/5 (E39), Topaz Blue/Stone Green/Black (118k miles) *very rare interior/exterior color combo*
2005 545i/SMG (E60), ED Order, Titanium Grey/Grey (lease over)
2015 335i, ED Order Summer 2015
Reply With Quote
  #5  
Old 05-23-2006, 11:00 AM
Nickmitbm Nickmitbm is offline
Registered User
Location: Greece Thessaloniki
 
Join Date: Apr 2006
Posts: 51
Mein Auto: Audi A4 1.6
What's breakin RPM???
Reply With Quote
  #6  
Old 05-23-2006, 11:34 AM
credit777's Avatar
credit777 credit777 is offline
Officially Welcomed to the 'Fest
Location: San Diego
 
Join Date: Aug 2005
Posts: 444
Mein Auto: 750i
Quote:
Originally Posted by Suraj
4) In Steptronic with manual mode, why doesn't the engine just upshift when you have hit the rev limit?

Step will do exactly that if you put it in drive sport (DS) mode. Floor it an hold on!!

I've never tried putting it in M(anual) mode and flooring it without shifting - but I think if you don't shift, the computer puts the car in DS mode automatically and shifts accordly.

Again...I could be wrong since I haven't tried that. (nor do I really want to )
__________________


[His] 2006 750i Sport - Jet Black, 21" wheels, premium sound, luxury seating, convenience, comfort access, Sirius (Jet)
[Hers] 2008 650i - Metallic Black, Sports, Prem Sound, HUD, HD Radio, Cold Weather, Sirius (Shiloh)

Moved on from:
2005 645Ci (Ava)
2004 545i (Chief)
2002 330i (Kira)
1998 528i (Slick)
1999 540i (Sly)
Reply With Quote
  #7  
Old 05-23-2006, 11:38 AM
Ågent99's Avatar
Ågent99 Ågent99 is offline
Moderator, 5-Series
Location: Bay Area, CA
 
Join Date: Jan 2002
Posts: 5,931
Mein Auto: Trek 6500 MTB
Quote:
Originally Posted by Nickmitbm
What's breakin RPM???
4500
__________________
2001 530i/5 (E39), Topaz Blue/Stone Green/Black (118k miles) *very rare interior/exterior color combo*
2005 545i/SMG (E60), ED Order, Titanium Grey/Grey (lease over)
2015 335i, ED Order Summer 2015
Reply With Quote
  #8  
Old 05-24-2006, 07:39 PM
SteVTEC's Avatar
SteVTEC SteVTEC is online now
Officially Welcomed to the 'Fest
Location: DC Burbs
 
Join Date: Feb 2005
Posts: 1,007
Mein Auto: '11 E93/335i
Quote:
Originally Posted by Suraj
1) BMW Engine/transmission design really intrigues me and I want to know a lot more about it. Please point me to some good sources (preferably meant for dummies so that content is easy to understand) where I can find detailed information on topics like direct injection, forced induction, engine management maps, automatic transmission science, turbo charging, super charging, torque vs HP concerns etc. The information on bmwusa.com and bmwworld.com are good starting points which I have already read and I want to know more.
What you're asking for is a more advanced understanding of engine design, but to get that you have to understand the basics first. Somebody mentioned www.howstuffworks.com which is a good source, but also check out AutoZine Technical School. That should keep you busy for awhile. If you want to tinker and see how changing different parameters can affect vehicle performance, try out www.cartestsoftware.com/ There are also a ton of good links to read up on at the Stealth316 Tech Index. Beyond that, I could recommend some good automotive / engine engineering textbooks, but they're rather pricey and would be tough to find used (ebay).

Quote:
Originally Posted by Suraj
2) It is said that BMW I6 engines are free revving. In my test drives I have felt what it means, you just floor and the engine revs without hesistation. But what causes an engine to be free revving? Why isn't some other engine like a Ford free revving?
- short and aggressive gearing with prompt downshifts (auto)
- lightweight flywheel (manual)
- low inertia drivetrain with weight optimized components.
- vibration free operation (inherent in the Inline-6 configuration) and low NVH
- good top-end power (4 valve per cylinder engines have the advantage, but 3 and 2 valve engines can have great top-end also)
__________________
Steve
2012 E70 X5d (IT'S HERE!) Deep Sea Blue / Sand Beige, Premium, 3rd Row, Multi-Contour
2011 E93 335i Deep Sea Blue / Oyster, Step, Premium, Convenience (PDC & CA), and that's it


more pics here
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E60 (2004 - 2010)
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
* M6 * - Press Release from BMW Emission E63 / E64 M6 (2006 - 2010) 6 03-06-2007 07:20 AM
BMW's New Six-Cylinder Engines - In Depth sk330i General BMW 7 07-19-2006 04:52 PM
335 news release today => 535 next year klu123 E60 (2004 - 2010) 34 04-26-2006 03:35 PM
BMW Update for S54 Engines BMWNA M Series 2 08-13-2003 05:55 PM


All times are GMT -7. The time now is 04:18 PM.


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