BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing
 
Racewerkz Engineering
Post Reply
 
Thread Tools Search this Thread
      06-24-2011, 01:10 AM   #1
bluekn8286
Private First Class
 
Drives: 2011 E92 BMW M3 Dinan S1
Join Date: Mar 2011
Location: San Jose, CA

Posts: 145
iTrader: (0)

Question Help me identify a noise?

Hey there everyone, I know I post a lot of paranoid threads about my car, but I would really appreciate if I could get some help in identifying the slight whining noise I hear during idle. If this noise sounds normal then please let me know:



Thanks so much everyone
bluekn8286 is offline  
0
Reply With Quote
      06-24-2011, 10:44 AM   #2
mpm3
Captain
 
mpm3's Avatar
 
Drives: 2007 M coupe
Join Date: Jun 2010
Location: New Jersey

Posts: 814
iTrader: (7)

Garage List
2007 BMW M coupe  [5.00]
2011 BMW M3  [0.00]
normal
__________________
mpm3 is offline   United_States
0
Reply With Quote
      06-24-2011, 10:44 AM   #3
Malek@MRF
BimmerPost Supporting Vendor

 
Malek@MRF's Avatar
 
Drives: E92 M3
Join Date: Jan 2008
Location: Irvine, California

Posts: 3,364
iTrader: (5)

Send a message via AIM to Malek@MRF
It's normal. The engine has a slight whine to it.

It's naturally a pretty noisy drivetrain, but that is part of what makes it feel so mechanical and special.
__________________

BMW PERFORMANCE SPECIALISTS. Suspension. Forced Induction. Brakes. Race Preparation. Service. Alignments.
OFFICIAL PARTNERS: Íhlins. KW Suspension. Brembo. AP Racing. ESS Tuning. iND Distribution. Turner Motorsport.
Facebook | Instagram | Yelp! | Flikr | Contact | YouTube
Malek@MRF is online now   United_States
0
Reply With Quote
      06-25-2011, 01:13 AM   #4
elp_jc
Brigadier General
 
Drives: .
Join Date: May 2008
Location: .

Posts: 4,910
iTrader: (0)

Perfectly normal. It's the gear-driven exhaust cams (open the oil cap and you'll see what I'm talking about). When all are chain-driven, they're far quieter. Our system is a 'hybrid', since the intake cams are chain-driven. Our system makes timing more precise, the head more compact, and the engine more expensive. And that last part is why you don't see it used often. I still remember my '96 Honda VFR bike, which had the entire valvetrain gear-driven; it was a work of art, and music to the ears as well. But expensive as hell to maike.

Anyway, the other prevalent noise is the valvetrain, which is normal too. A bit noisier than my car's, but normal nonetheless. Maybe it's just the microphone. Don't worry man; enjoy your car. That whine is what makes our engine sound incredible IMO, especially under way; it's a mechanical symphony .
elp_jc is offline   United_States
0
Reply With Quote
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Forum Jump


All times are GMT -5. The time now is 12:53 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST