Help me identify a noise?

bluekn8286 · 06-24-2011, 01:10 AM

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

mpm3 · 06-24-2011, 10:44 AM

normal

Malek@MRF · 06-24-2011, 10:44 AM

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.

JCtx · 06-25-2011, 01:13 AM

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

.

06-24-2011, 01:10 AM	#1
bluekn8286 First Lieutenant 103 Rep 327 Posts Drives: 2011 E92 BMW M3 Dinan S1 Join Date: Mar 2011 Location: San Jose, CA iTrader: (0)	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
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06-24-2011, 10:44 AM	#2
mpm3 Captain 70 Rep 819 Posts Drives: 2007 M coupe Join Date: Jun 2010 Location: New Jersey iTrader: (7) Garage List 2007 BMW M coupe [10.00] 2011 BMW M3 [0.00]	normal __________________
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06-24-2011, 10:44 AM	#3
Malek@MRF BimmerPost Supporting Vendor 731 Rep 3,735 Posts Drives: E92 M3, E46 M3, G82 M4 Join Date: Jan 2008 Location: Irvine, California iTrader: (5)	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. Race Engines. Suspension. F/I. Brakes. Race Preparation. Factory Service. Alignments. OFFICIAL PARTNERS: KW. MOTON. Brembo. AP Racing. BBS Motorsport. iND. HRE. Turner Motorsport. VAC. BMW Motorsport. Facebook \| Instagram \| Yelp! \| Flikr Phone: 949-233-0448 \| E-Mail: info@mrfengineering.com
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06-25-2011, 01:13 AM	#4
JCtx Major General 258 Rep 5,012 Posts Drives: No BMW yet Join Date: May 2008 Location: El Paso TX 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 .
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