Notices
996 Forum 1999-2005
Sponsored by:

Whats that sound?

Thread Tools
 
Search this Thread
 
Old 06-23-2016, 10:59 AM
  #1  
Slakker
Rennlist Member
Thread Starter
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default Whats that sound?

Loosened parking brake cable, greased sway bar bushing, no luck. Coming from drivers rear wheel or axle. Verified tire isn't rubbing, only does it under weight load, not when jacked up and free spinning.

Old 06-23-2016, 11:09 AM
  #2  
spruden
Racer
 
spruden's Avatar
 
Join Date: Sep 2014
Location: Indianapolis
Posts: 373
Received 2 Likes on 1 Post
Default

Sounds like an early stage wheel bearing failure to me - will manifest itself when the wheel carrier is under load more so than when it's free spinning without the weight of the car.

Have you made sure your lugs are properly torqued - does it change when you load up one side of the car vs. the other (when turning)? Did you check the CV joints/axles?
Old 06-23-2016, 11:11 AM
  #3  
Slakker
Rennlist Member
Thread Starter
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default

Just checked, goes away when turning left, a little worse when turning right. Torqued the lugs to 96 yesterday but will double check. Maybe I missed a wheel.
Old 06-23-2016, 11:11 AM
  #4  
Turbojamie
Pro
 
Turbojamie's Avatar
 
Join Date: May 2015
Posts: 606
Received 10 Likes on 6 Posts
Default

Wheel bearing or brakes.
Old 06-23-2016, 11:14 AM
  #5  
Slakker
Rennlist Member
Thread Starter
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default

Lugs are tight.
Old 06-23-2016, 11:17 AM
  #6  
spruden
Racer
 
spruden's Avatar
 
Join Date: Sep 2014
Location: Indianapolis
Posts: 373
Received 2 Likes on 1 Post
Default

Originally Posted by Slakker
Just checked, goes away when turning left, a little worse when turning right. Torqued the lugs to 96 yesterday but will double check. Maybe I missed a wheel.
From my experience that indicates it's either a wheel not sufficiently attached or the bearing. Brakes aren't manipulated by side to side load like the wheel is. Most likely your wheel wasn't seated well and just needs to be re-torqued.
Old 06-23-2016, 11:19 AM
  #7  
dporto
Rennlist Member
 
dporto's Avatar
 
Join Date: Oct 2014
Location: L.I. NY
Posts: 6,794
Received 1,169 Likes on 797 Posts
Default

Really difficult to tell from the video on my phone but, I'd guess one of the ball joints in the suspension (coffin/control arm or track arm). Shoot a little wd or grease through the rubber boot and see if it goes away. If it does, replace the offending part as the grease/ lube won't last long.
Old 06-23-2016, 11:23 AM
  #8  
JimmyB
Rennlist Member
 
JimmyB's Avatar
 
Join Date: May 2016
Location: DC
Posts: 467
Received 56 Likes on 39 Posts
Default

Nothing helpful to add but I just wanted to say I'm glad you still have the stripes
Old 06-23-2016, 11:49 AM
  #9  
Slakker
Rennlist Member
Thread Starter
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default

Originally Posted by JimmyB
Nothing helpful to add but I just wanted to say I'm glad you still have the stripes
. They are starting to grow on me. Like all things, they look better with black wheels!


Old 06-23-2016, 11:52 AM
  #10  
FRUNKenstein
Rennlist Member
 
FRUNKenstein's Avatar
 
Join Date: Jun 2003
Location: Overland Park, KS
Posts: 6,015
Received 303 Likes on 173 Posts
Default

Originally Posted by Slakker
Just checked, goes away when turning left, a little worse when turning right. Torqued the lugs to 96 yesterday but will double check. Maybe I missed a wheel.
Super Dave:
That's a classic symptom that a left wheel bearing is going bad. When you put load on the bearing, the noise gets worse. So, if the bad bearing is on the left side of the car and you turn left, the weight shifts to the right side of the car and off the bearing on the left side. Hence, the grinding sound lessens. When you turn right, the weight shifts to the left side of the car, putting load on the bad bearing and making the sound worse.
Old 06-23-2016, 11:56 AM
  #11  
Slakker
Rennlist Member
Thread Starter
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default

Is the wheel bearing a dealer only or auto parts item?
Old 06-23-2016, 12:23 PM
  #12  
dporto
Rennlist Member
 
dporto's Avatar
 
Join Date: Oct 2014
Location: L.I. NY
Posts: 6,794
Received 1,169 Likes on 797 Posts
Default

The wheel bearings are not a "dealer only" part. I just did two fronts on mine a few months ago. They're priced from $45 - $90 ea. Kind of a pain in the butt to do, but not a difficult job. There are a few DIY's - the tools are essential...and put the bearings in the freezer overnight before installing.
Old 06-23-2016, 12:36 PM
  #13  
Slakker
Rennlist Member
Thread Starter
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default

Ok. Track day tomorrow, nobody has one in stock locally. Do I drive it like it is, Lube it somehow, steal a wheel bearing off my silver car, or abort and not take it tomorrow?
Old 06-23-2016, 12:50 PM
  #14  
5CHN3LL
Race Director
 
5CHN3LL's Avatar
 
Join Date: Sep 2012
Location: SOcialist republic of CALifornia
Posts: 10,423
Received 214 Likes on 157 Posts
Default

Swapping carriers might be an easier operation than trying to steal the bearing from your other car as long as both cars use the same port. I'm not sure you'd get the "good" bearing out without damaging it; if you swap out carriers, you avoid that mess entirely.
Old 06-23-2016, 12:57 PM
  #15  
Slakker
Rennlist Member
Thread Starter
 
Slakker's Avatar
 
Join Date: Dec 2013
Location: Edmond, OK
Posts: 4,775
Received 270 Likes on 124 Posts
Default

That's a good idea. I can swap carriers without messing up the alignment, right?


Quick Reply: Whats that sound?



All times are GMT -3. The time now is 08:13 AM.