rear end whine/noise - IMBOC
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 17 (permalink) Old 09-07-2012, 05:09 PM Thread Starter
 
Join Date: Jan 2012
Location: Connecticut
Posts: 3
rear end whine/noise

hey everyone, this is my first thread on imboc. have to say an awesome resource.

the issue i am having is the rear is making a whine at highway speeds, approx. 60-65mph to 80-85mph when on the throttle. brought the car to ford as it was still under the 3/36 warrenty 8 months ago. car had 7500 miles then and about 8500 miles now. ford replaced the ring and pinion under warrenty and said the noise was fixed. first thing i did when i got it back was take it on the highway. noise was still there but not as bad. i dont do a lot of highway driving so i dont really notice it but the other day i was on the highway and have to say the noise is back to the level it was previous of the repair. wondering if i should bother bringing back to ford, or pay a specialty shop to possibly set up the gears correctly. i have heard the 3.73 gears are noisy, but i think it is excessive. i have also heard that 4.10 gears are a good way to go.

any comments, suggestions, advice, experience would be much appreciated, thanks

-- This is an automatically generated IMBOC.com message --

This is my first post. My Welcome thread is here. Please post all my welcome messages there.

JMBullitt08 is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 09-07-2012, 06:11 PM
Old enough to know better.
 
RonReam's Avatar
 
Join Date: Oct 2008
Location: Shrewsbury, Pennsylvania
Posts: 4,260
Hello John, Welcome to IMBOC!

Many Bullitt owners have gone through exactly what you describe. Myself included, numerous times.
The S197 platform is notorious for transmitting noise, vibration, and gear noise into the cabin. There is NO sound insulation in the rear of our cars.

Some owners will advise you that if the gears are set up correctly, there should be no noise.
Others will tell you that if the noise is 'slight' and you can live with it, that you may as well accept it, because if you try to have it fixed, it just might be Worse next time, so just leave it alone. I wish I had just left mine alone.

If you keep going back to Ford, at some point they will tell you that the noise is normal and that's just the way it is. Gears make noise. That's what happened to me.

The 3.73 gears may or may not be noisy, but 4.10 gears have more of a chance to be noisy. Higher pinion speed for a given road speed.

My ultimate solution, and other owners have done this, is to add sound insulation to the trunk and under the back seat, and turn up the radio or install louder mufflers.


.

Last edited by RonReam; 09-08-2012 at 03:28 AM.
RonReam is offline  
post #3 of 17 (permalink) Old 09-08-2012, 05:41 PM Thread Starter
 
Join Date: Jan 2012
Location: Connecticut
Posts: 3
hey Ron,

thanks for the welcome, i have also heard about using dynamat, i might give that a try. really dont want to bring my car back to ford. feel like they will give me the run around and just slap another gear set in. and like you said could be worse than the one i already have.
JMBullitt08 is offline  
post #4 of 17 (permalink) Old 09-08-2012, 07:08 PM

Monster BullittHead
 
Join Date: Jun 2009
Location: New Hampshire
Posts: 1,439
you are probably not all that far from TASCA FORD (Mod Shop).
If it really annoys you, have them check it out. Expensive over there, but they do High Performance Mustangs all day long.
PX-NH is offline  
post #5 of 17 (permalink) Old 09-08-2012, 07:10 PM

Monster BullittHead
 
Join Date: May 2011
Location: central FL
Posts: 799
Dynomat under the rear seat all around the UCA mounting bolt may help. I have the same noise, installed an aftermarket upper control arm and had to remove it after 3 months because the noise was so loud. The upper control arm acted like a megaphone transmitting the gear noise straight into the cabin.
skwerl is offline  
post #6 of 17 (permalink) Old 09-12-2012, 03:56 AM

Mega BullittHead
 
Join Date: Oct 2010
Location: france
Posts: 110
I have exactly the same issue. So i decided to order a brand new rear axle assembly (the same as the assembly from the Boss 2012). And you know what ? Same noise.. may be quieter... may be....
mathvieu is offline  
post #7 of 17 (permalink) Old 10-21-2012, 01:48 PM

BullittHead
 
Join Date: Feb 2009
Location: Stockholm
Posts: 40
Yes, I think insulation is the best solution. Ive noticed when the trunk is full of baggage, I dont hear any noise.
mattanlind is offline  
post #8 of 17 (permalink) Old 10-21-2012, 02:27 PM
Banned
 
bobnixon's Avatar
 
Join Date: Nov 2008
Location: Wise, VA
Posts: 11,694
John,my Gears Were Replaced Twice,hardly No Change.like Ron Said These Cars Have No Insulation.take The Rear Shocks,they Mount Inside Ya Trunk With One Little Thin Pc.insulation.the Tube/sleeve On The Shock Sends All That Noise In Side The Car.i Took My Shocks Loose,dynomated All That Area,under The Washers,then On Top The Nuts.
If You Are Not Carrying A Full Size Spare,that Really Makes A Differance To Have A Good Tight Fitting Spare In That Wheel Well. 5224 Has Ben Dymanated,doors,qtr Pannels,the Compleat Trunk Area/wheel Well Ect.
Floor Pan From Under The Front Seat Out Into The Trunk.the Differance It Made Was Well Worth All The Hard Work,and 27 Lb.dynomat.i Now Hear No Rear Gear Whine.i Also Got 1/2 Round Foam Insulation And Put In Behind My Window Seals To Cut Out Wind Noise.this Is My Experance,hope It Helps.bout All I Hear Now Is That Whipple,and The Exhaust.
bobnixon is offline  
post #9 of 17 (permalink) Old 10-21-2012, 03:41 PM
Lifetime Supporting Member
 
tigerhonaker's Avatar
 
Join Date: Feb 2008
Location: Franklin, TN. U.S.A.
Posts: 28,302
Exclamation

Quote:
Originally Posted by JMBullitt08
hey everyone, this is my first thread on imboc. have to say an awesome resource.

the issue i am having is the rear is making a whine at highway speeds, approx. 60-65mph to 80-85mph when on the throttle. brought the car to ford as it was still under the 3/36 warrenty 8 months ago. car had 7500 miles then and about 8500 miles now. ford replaced the ring and pinion under warrenty and said the noise was fixed. first thing i did when i got it back was take it on the highway. noise was still there but not as bad. i dont do a lot of highway driving so i dont really notice it but the other day i was on the highway and have to say the noise is back to the level it was previous of the repair. wondering if i should bother bringing back to ford, or pay a specialty shop to possibly set up the gears correctly. i have heard the 3.73 gears are noisy, but i think it is excessive. i have also heard that 4.10 gears are a good way to go.

any comments, suggestions, advice, experience would be much appreciated, thanks

-- This is an automatically generated IMBOC.com message --

This is my first post. My Welcome thread is here. Please post all my welcome messages there.

John,

Just so you know.
If the rear end whine/noise is slight right now.
Leave well enough alone.

Trust this Buddy many of us have spent some very serious dollars screwing with this sort of thing.

I'm not talking about hundreds.
I'm talking about thousands.

tigerhonaker


Brenspeed Talks About the "tiger-machine" being a Long Term Project and Dream Car.

Click on Video Link below to see it on the DYNO
and
it making a Full Blown, Wide-Open, Drive-By.


http://www.stangtv.com/news/video-brenspeed-talks-about-long-term-projects-and-dream-cars/

tigerhonaker is offline  
post #10 of 17 (permalink) Old 10-21-2012, 04:51 PM
Lifetime Supporting Member
 
Join Date: Feb 2012
Location: Houghton, Michigan
Posts: 2,146
I don't have gear noise, but since I put in the aluminum driveshaft, the engine/exhaust noise is quite loud. But I have also noticed that since I changed the rear axle fluid, I get a "groan" noise on turns. I used the Royal Purple which worked fine in my 2005 GT. Any ideas on that?
nelsonbullitt is online now  
post #11 of 17 (permalink) Old 10-21-2012, 05:01 PM
Lifetime Supporting Member
 
tigerhonaker's Avatar
 
Join Date: Feb 2008
Location: Franklin, TN. U.S.A.
Posts: 28,302
Lightbulb

Quote:
Originally Posted by nelsonbullitt
I don't have gear noise, but since I put in the aluminum driveshaft, the engine/exhaust noise is quite loud. But I have also noticed that since I changed the rear axle fluid, I get a "groan" noise on turns. I used the Royal Purple which worked fine in my 2005 GT. Any ideas on that?
Bob,

This is just me and my, (Opinion).

And before the rest of you jump all over this Post.
Give me a break !!!

I'm Posting this to, Bob ......

Bob, go to Ford and get the Ford OEM Rear-End-Fluid and don't forget to
also get the Ford Posi Additive.

Change it back to Ford and your worries will be over as far as the Groan !!!

Guys I'm not going to get in some lengthy Battle here on the use of Purple Fluid Products versus OEM Ford Fluids.
If you prefer the use of the Purple and have zero issues keep using it as you prefer.

Bob, do as I suggested above and have a nice day.


Oh, BTW, the reason you hear more noise now after the Aluminum driveshaft install.
You took out the two-piece and that had the center support and was designed by Ford to Help keep down drive-line-noise.
The Aluminum shafts are for Performance, not in anyway to reduce drive-line-noise as you now know.

tigerhonaker


Brenspeed Talks About the "tiger-machine" being a Long Term Project and Dream Car.

Click on Video Link below to see it on the DYNO
and
it making a Full Blown, Wide-Open, Drive-By.


http://www.stangtv.com/news/video-brenspeed-talks-about-long-term-projects-and-dream-cars/

tigerhonaker is offline  
post #12 of 17 (permalink) Old 10-21-2012, 06:54 PM
Old enough to know better.
 
RonReam's Avatar
 
Join Date: Oct 2008
Location: Shrewsbury, Pennsylvania
Posts: 4,260
Thumbs up a "groan" noise on turns

Pretty good chance it's the infamous "dying whale" syndrome. If that's the case then it's just the Traction-Lok clutch pack in the differential making noise. Some guys have had extra friction modifier added and it's gone away.

The "Groan" is caused by the special carbon-fiber clutch pack in the Bullitt differential, which is not used in most Mustangs.


Please read through this Thread:
http://www.imboc.com/forums/226-08-09-mechanical-issues/191288-rear-end.html#post2135229

Additionally, many members, myself included, have learned the Hard Way that using Original Ford Fluids in the transmissions and differentials ends up being the best thing to do.
You can ask me how I know, but it's a long painful story.


2009 Bullitt (not even nearly stock)... 2016 F-250 Crew... 2010 Crown Vic Police Interceptor (Daily Driver)



Texas Shootout 2015


HoonDog Performance Group Website .. HoonDog Performance Group Forum.



Last edited by RonReam; 10-21-2012 at 07:46 PM.
RonReam is offline  
post #13 of 17 (permalink) Old 02-18-2013, 08:44 PM

BullittHead
 
Join Date: Oct 2012
Location: Savannah, ga
Posts: 47
Do you still have the factory axle Dampers on? They are two solid Iron weights at the end of the axle that mount to the lower control arm brackets. I took mine off when I did my suspension, and took the car out today and had the rear end whine for the first time. I will be putting them back on after I coat them in POR15.

Just another thought. They were put there specifically to reduce the whine or 'ringing' of the rear end. If you need some, I guarantee there are guys who are willing to give them away as most tinkerers take them off.

Ken
08' HG #1551

My Road Course Toy
BAMA Tune, Pypes OR X-pipe, Stock Mufflers, Tokico D-Specs, Motorsport K-Springs, Eibach Pro Alignment Adjustable Rear Control Arms, J&M Camber Plates, J&M Adjustable Aluminum Panhard Bar, Whiteline LCA Relocation Brackets, Whiteline adjustable front Swaybar, Stillen Adjustable rear Swaybar, Steeda Bumpsteer Kit, 19" Brembo Wheels, EBC Yellows.

Savannah, GA
Quicker10u is offline  
post #14 of 17 (permalink) Old 02-19-2013, 06:50 AM
Lifetime Supporting Member
 
Join Date: Feb 2012
Location: Houghton, Michigan
Posts: 2,146
Quote:
Originally Posted by Quicker10u
Do you still have the factory axle Dampers on? They are two solid Iron weights at the end of the axle that mount to the lower control arm brackets. I took mine off when I did my suspension, and took the car out today and had the rear end whine for the first time. I will be putting them back on after I coat them in POR15.

Just another thought. They were put there specifically to reduce the whine or 'ringing' of the rear end. If you need some, I guarantee there are guys who are willing to give them away as most tinkerers take them off.
Thanks, Guys, for your input. When I was at the drag strip this last year every time I would slow down at the end of the run and make that U turn, the "whale" groan was there and the attendant would just look at me!
I do believe that the "groan" is the clutch pack. In my '05, when I changed gears, I used my favorite lubricant, Mobil 1. I used their full synthetic with the Ford friction modifier. I'm changing back this spring. I might just do the 4:10 gears and the bearing kit from AM as I did with the '05. I LOVED my 4:10, but I had an automatic an just nailing that thing was a blast from a 40 mph roll. But now I'm sc and wondering if I would just end up starting in 2nd.

Former owner of 6010.
2011 Mustang GT
Mods: JBA ss ceramic coated 1 7/8 headers with HF cats and stock axlebacks. Roush 2300 TVS supercharger with upgraded fuel delivery (47lb injectors, boost-a-pump, H0 plugs). Dyno'd 591 RWHP(w/stock exhaust). Boss oil cooler. Exedy 500 clutch w/billit steel flywheel. Whiteline rear LCAs, Tokico D-spec adjustable shocks/struts, BMR watts link and relocation brackets. Ford Racing "P" springs. DS shop carbon fiber driveshaft.
nelsonbullitt is online now  
post #15 of 17 (permalink) Old 02-19-2013, 11:18 AM

Monster BullittHead
 
Join Date: May 2009
Location: Indy
Posts: 1,185
Quote:
Originally Posted by tigerhonaker
Bob,

This is just me and my, (Opinion).

And before the rest of you jump all over this Post.
Give me a break !!!

I'm Posting this to, Bob ......

Bob, go to Ford and get the Ford OEM Rear-End-Fluid and don't forget to
also get the Ford Posi Additive.

Change it back to Ford and your worries will be over as far as the Groan !!!

Guys I'm not going to get in some lengthy Battle here on the use of Purple Fluid Products versus OEM Ford Fluids.
If you prefer the use of the Purple and have zero issues keep using it as you prefer.

Bob, do as I suggested above and have a nice day.


Oh, BTW, the reason you hear more noise now after the Aluminum driveshaft install.
You took out the two-piece and that had the center support and was designed by Ford to Help keep down drive-line-noise.
The Aluminum shafts are for Performance, not in anyway to reduce drive-line-noise as you now know.

tigerhonaker
Without having Ford spec fluids in the differential, you have 0% chance of having any warranty claims honored for the rear end & associated parts.
Dyno Don is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the IMBOC forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome