Resonance at around 70 MPH? - Page 7 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BRZnut · 07-16-2013, 07:59 PM

I get it exactly at 69-71 MPH. It is like a low pitched rumble noise from the back end.

Huggsen · 08-14-2013, 06:21 PM

Took my FRS to the shop for this and after a week and a half dealer calls me back and explains that there is nothing they can do to fix the issue. Although they would explain to me exactly what the issue is. Will post what I find out in the morn.

Grip Ronin · 08-14-2013, 07:54 PM

i noticed it only happens at part throttle, basiclly jus enough to maintain speed. its the way the gears are meshing in the diff thats causing the noise. maybe its the engineering specs of them, the preload or the angle of the gears but i belive theyre too loose and the teeth slap back and forth to create this noise. anyone with a cusco final notice if the noise left??

Silverpike · 09-06-2013, 03:44 AM

Quote:

Originally Posted by Grip Ronin

i noticed it only happens at part throttle, basiclly jus enough to maintain speed. its the way the gears are meshing in the diff thats causing the noise. maybe its the engineering specs of them, the preload or the angle of the gears but i belive theyre too loose and the teeth slap back and forth to create this noise. anyone with a cusco final notice if the noise left??

I'm thinking it could be cured if the diff is opened up and the backlash adjusted. It's probably a gear tooth spacing problem at the root, since that's the kind of thing that would have a natural variance out of the factory.

I would flip out if this happened on a brand new car. On my car its a loud howling noise, it makes the car sound really ghetto, and it's really embarrassing.

Grip Ronin · 09-06-2013, 01:16 PM

Quote:

Originally Posted by Silverpike

I'm thinking it could be cured if the diff is opened up and the backlash adjusted. It's probably a gear tooth spacing problem at the root, since that's the kind of thing that would have a natural variance out of the factory.

I would flip out if this happened on a brand new car. On my car its a loud howling noise, it makes the car sound really ghetto, and it's really embarrassing.

yes probably, at 2000miles it sounded like I had a bad wheel bearing lol

zoomzoomers · 09-06-2013, 01:56 PM

I wonder if I have this issue, but with my Perrin non-resonated CBE I'll never be able to tell. Anyone get any more answers?

Opposed · 09-18-2013, 06:16 PM

Coming in late to this thread, but I have been experiencing some strange noise coming from my car lately as well. I notice that only when the car is at full temp, or has been driving around long enough to get hot, that there is also a bad wheel bearing noise coming from the center, or mostly rear of the car. I notice it only on light throttle especially around the 3200-3500 rpm range. Mainly if I bring it up to that RPM in second gear and just hold a constant speed, its pretty dang loud, or decelerating off of the freeway and downshift its loud. Under load it is quite, and if I put the car in neutral while rolling its quiet. I do have an aftermarket header and exhaust. I thought for a while that something was just rubbing. But im just not sure that's the case. I put it on the hoist today at a buddys shop, and everything looks good. I'm starting to worry now...

vgi · 09-18-2013, 10:27 PM

heh, same here
after the whiteline tranny, subframe, and diff bushings have these 3 noises together:
- bad wheel bearing at 30-70 (that's the cycling noise)
- high pitch whining
- low pitch kind of grinding
I don't mind the latter two but the 'bad wheel bearing' is really annoying

Opposed · 09-18-2013, 10:32 PM

Quote:

Originally Posted by vgi

heh, same here
after the whiteline tranny, subframe, and diff bushings have these 3 noises together:
- bad wheel bearing at 30-70 (that's the cycling noise)
- high pitch whining
- low pitch kind of grinding
I don't mind the latter two but the 'bad wheel bearing' is really annoying

Yes, the noise is taking away the fun of driving the car. Im starting to dread driving because I know the noise is coming...

zERoTu · 10-03-2013, 02:55 AM

i have this noise as well since day 1

Monoman · 10-24-2013, 05:44 PM

OK I"m not crazy about hearing the drone/whine at 70. We got our BRZ about two weeks ago. I noticed it a time or two after driving on the highway. Our daily commute is 30 minutes of highway driving each way so I will be telling the dealer about it.

GoldDust · 04-29-2014, 12:55 PM

.

GoldDust · 09-08-2014, 08:58 PM

.

FirestormFRS · 09-13-2014, 05:52 AM

Bumping this for @Aaron_blatherwick

08-14-2013, 07:54 PM	#87
Grip Ronin The Mechanic Join Date: Mar 2012 Drives: Civic Turbo,FR-S Location: NJ Posts: 928 Thanks: 130 Thanked 171 Times in 119 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	i noticed it only happens at part throttle, basiclly jus enough to maintain speed. its the way the gears are meshing in the diff thats causing the noise. maybe its the engineering specs of them, the preload or the angle of the gears but i belive theyre too loose and the teeth slap back and forth to create this noise. anyone with a cusco final notice if the noise left?? __________________ IG-Joey_Soul Progress Thread Ported billet 20G

09-06-2013, 01:56 PM	#90
zoomzoomers Senior Member Join Date: Nov 2011 Drives: 2013 Subaru SWP BRZ Limited 6AT Location: Darkside Posts: 1,862 Thanks: 526 Thanked 305 Times in 207 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I wonder if I have this issue, but with my Perrin non-resonated CBE I'll never be able to tell. Anyone get any more answers? __________________ Man Law#17:A man in the company of a hot, seductively dressed, woman MUST remain sober enough to fight! MODS: AVO tubes + filter, Cusco (F) strut brace w/ MC brace, Perrin CBE, Subaru OEM trunk tray, Grimmspeed front license re-locator & hood struts and Beatsonic rear cam.

09-18-2013, 06:16 PM	#91
Opposed Senior Member Join Date: Jun 2012 Drives: 2013 Asphalt FR-S Location: Bloomington, MN Posts: 1,156 Thanks: 499 Thanked 447 Times in 294 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Coming in late to this thread, but I have been experiencing some strange noise coming from my car lately as well. I notice that only when the car is at full temp, or has been driving around long enough to get hot, that there is also a bad wheel bearing noise coming from the center, or mostly rear of the car. I notice it only on light throttle especially around the 3200-3500 rpm range. Mainly if I bring it up to that RPM in second gear and just hold a constant speed, its pretty dang loud, or decelerating off of the freeway and downshift its loud. Under load it is quite, and if I put the car in neutral while rolling its quiet. I do have an aftermarket header and exhaust. I thought for a while that something was just rubbing. But im just not sure that's the case. I put it on the hoist today at a buddys shop, and everything looks good. I'm starting to worry now... __________________ Asphalt FR-S: EcuTek Visconti STG2 tune, MAPerformance turbo kit, MAPerformance 3" exhaust, Hotchkis springs, Mach-V 17x9 Awesomes. Build thread: http://www.ft86club.com/forums/showthread.php?t=30703

04-29-2014, 12:55 PM	#96
GoldDust Member Join Date: Mar 2014 Drives: BRZ Location: North America Posts: 35 Thanks: 21 Thanked 27 Times in 18 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	. __________________ Current: 2014 Subaru BRZ Limited #2 Past: 2014 Subaru BRZ Limited #1 (RIP), 2011 Porsche Boxster, 2008 Honda Civic Coupe, 2003 Honda Accord Last edited by GoldDust; 04-24-2015 at 07:26 PM. Reason: .

09-08-2014, 08:58 PM	#97
GoldDust Member Join Date: Mar 2014 Drives: BRZ Location: North America Posts: 35 Thanks: 21 Thanked 27 Times in 18 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	. __________________ Current: 2014 Subaru BRZ Limited #2 Past: 2014 Subaru BRZ Limited #1 (RIP), 2011 Porsche Boxster, 2008 Honda Civic Coupe, 2003 Honda Accord Last edited by GoldDust; 04-24-2015 at 07:26 PM. Reason: .

07-16-2013, 07:59 PM	#85
BRZnut Senior Member Join Date: Oct 2012 Drives: BRZ DGM Limited Location: USA Posts: 1,237 Thanks: 5 Thanked 431 Times in 250 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	I get it exactly at 69-71 MPH. It is like a low pitched rumble noise from the back end.

08-14-2013, 06:21 PM	#86
Huggsen Member Join Date: Jan 2013 Drives: 2013 Scion FR-S Raven Location: Oklahoma Posts: 12 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Took my FRS to the shop for this and after a week and a half dealer calls me back and explains that there is nothing they can do to fix the issue. Although they would explain to me exactly what the issue is. Will post what I find out in the morn.

09-18-2013, 10:27 PM	#92
vgi Senior Member Join Date: Apr 2013 Drives: frs Location: nj Posts: 723 Thanks: 237 Thanked 347 Times in 232 Posts Mentioned: 58 Post(s) Tagged: 0 Thread(s)	heh, same here after the whiteline tranny, subframe, and diff bushings have these 3 noises together: - bad wheel bearing at 30-70 (that's the cycling noise) - high pitch whining - low pitch kind of grinding I don't mind the latter two but the 'bad wheel bearing' is really annoying

10-03-2013, 02:55 AM	#94
zERoTu Senior Member Join Date: Jul 2013 Drives: 1st RBv2 10 Series FRS Location: Canada Posts: 157 Thanks: 40 Thanked 55 Times in 21 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	i have this noise as well since day 1

10-24-2013, 05:44 PM	#95
Monoman Member Join Date: Oct 2013 Drives: '13 BRZ - SWP Location: Southeast FL Posts: 26 Thanks: 0 Thanked 9 Times in 3 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	OK I"m not crazy about hearing the drone/whine at 70. We got our BRZ about two weeks ago. I noticed it a time or two after driving on the highway. Our daily commute is 30 minutes of highway driving each way so I will be telling the dealer about it.

09-13-2014, 05:52 AM	#98
FirestormFRS Senior Member Join Date: Jul 2012 Drives: 2013 FR-S Location: Anytown Posts: 920 Thanks: 73 Thanked 643 Times in 302 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Bumping this for @Aaron_blatherwick

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