Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Custom User Title
 
rammstein's Avatar
 
Join Date: Oct 2002
Location: Miami
Posts: 4,295
CV Joint or Bearings?

So right after I went to a DE I started hearing a very. very faint thumping sound coming from the rear. I assumed it was a somewhat flat-spotted tire from an unfortunate incident where over-exuberance landed me sideways. Kept it on the track though .

Anyhow- the thumping has ever so gradually gotten louder. it can't be a tire anymore. I am taking it to the shop on Friday. Now, taking a guess I thought maybe something to do with a CV joint or bearing might be to blame. The sound gets faster with vehicle speed, and at some point around 45mph gets difficult to detect. Sound is independent of transmission (in fact, it has been there for two trannys now). Any thoughts on what it is and what it is going to cost your penniless friend?
Old 09-30-2003, 09:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
Bearings. Or one big bubble on your tire!
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 09-30-2003, 09:39 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Custom User Title
 
rammstein's Avatar
 
Join Date: Oct 2002
Location: Miami
Posts: 4,295
How expensive are bearings? Can they do it in a day?

Please excuse my ignorance, someday I'll know what I'm talking about!
Old 09-30-2003, 09:41 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Feb 2000
Location: Kingsport, TN
Posts: 2,925
A rear wheel bearing costs about 60 bucks. It can be done in a day. It took me a weekend, however. Some do it without removing the arm from the vehicle with a puller. Didn't have the puller so I did it by removing the trailing arm, heating it, and using a press as described in the P manual. Bought my bearing at Pelican. Don't forget to change the nut which has to be torqued to 360 ft-lbs. It's a single use nut.
__________________
Lawrence
1986 951
2002 SLK32 AMG
1987 328GTS
2011 528i
Old 09-30-2003, 10:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
Seals! Don't forget the seals!!!!
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 09-30-2003, 11:48 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Dave951M's Avatar
 
Join Date: Apr 2001
Location: NC
Posts: 411
Since when did wheel bearings thump? All the ones I've ever replaced made a roaring sound. I'm leaning on CV joints or tires.
__________________
Dave951M
86 951 Blitzwagen
82 931 Basket Case (for now)
Old 09-30-2003, 11:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
Let's go shooting.
 
Dark Skies's Avatar
 
Join Date: Feb 2003
Location: United Kingdom.
Posts: 1,200
It might just be that the grease in your CV joints need packing - sometimes, if they've seen a few years use the grease hardens. It only takes an hour our so to pull the shafts, clean out the muck and repack.

I had this happen to me and it sounds very similar to what I experienced.

Also ... it sounds similiar to a cracked bearing race which I have also experienced - this occured twice and turned out to due to a worn stub axle. You could look for this whilst checking whether you need to repack. The CV bolts are usually torx M8s but they are often replaced with conventional cap head (allen) screws so be sure to check - I got suckered when one side was cap head but the other was torx - I was annoyed to damage one of them with an allen wrench prior to noticing the discrepancy.
__________________
1983 944 Lux (manual) 2.5 litre 8 valve na and no pas

1991 944 (automatic) 2.7 litre 16 valve na and pas

"I have only five words for you: From my cold, dead hands."
Old 09-30-2003, 02:23 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 11:10 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.