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2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed turn ?

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chrisfield
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2022/10/24 11:42:36 (permalink)

2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed turn ?

2005 911 997 Carrera C4S  circa 100,000 miles - noise ( just audible 'graunch' and single or sometimes  double  'click ' sound ) when making hard very slow speed turn ( R and L ) - typically when parking in restricted space - from front axle/ suspension area. Having not found any obvious signs following cursory inspection of suspension or discs - could this be indication of drive shaft wear and replacement necessary?

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AndrewCS
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/10/24 12:15:41 (permalink)
Outer CV joint ... 
post edited by AndrewCS - 2022/10/24 12:18:17

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chrisfield
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/10/24 20:13:01 (permalink)
chrisfield
2005 911 997 Carrera C4S  circa 100,000 miles - noise ( just audible 'graunch' and single or sometimes  double  'click ' sound ) when making hard very slow speed turn ( R and L ) - typically when parking in restricted space - from front axle/ suspension area. Having not found any obvious signs following cursory inspection of suspension or discs - could this be indication of drive shaft wear and replacement necessary?


Thanks for recent post indicating outer CV joint as likely candidate for cause of problem. Response from a number of potential Porsche specialists parts suppliers so far is that unfortunately only the inner CV joint is available as a replacement part. Not being mechanically minded; does this make sense? Seems only solution is to purchase a replacement Drive Shaft complete - rather expensive!
tscaptain
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/10/24 21:40:19 (permalink)
Moved to 997 forum!

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AndrewCS
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/10/24 22:00:39 (permalink)
only the inner CV joint is available as a replacement part. Not being mechanically minded; does this make sense


 
Yes ... you now have to determine which one is the problem 
 
Aftermarket options ... 
 
Cv axle for Porsche 911 997 Coupe 3.8 Carrera 4S 2004 - 2008 355hp / 261kW Petrol (autodoc.co.uk)

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chrisfield
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/10/25 10:30:19 (permalink)
Many thanks.
Dismantle Drive Shafts to seek to determine which CV joint is the problem.
Would it be obvious from inspection only of ( replaceable element  ) dismantled inner CV joint ,under no turning load, if it is worn out?
Similarly with ( not replaceable as a stand alone element) outer CV joint?
Is there much likelihood do you think both inner and outer CV joint could possibly be shot on each Shaft?
AndrewCS
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/10/25 10:43:00 (permalink)
I suggest that you consult a garage to determine the culprit, when I had `same` on my Audi S4 Avant I could `tell` by driving and `lock to lock` steering inputs ... from your initial post - you may have more than one culprit ?  

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geedee
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/10/25 11:25:17 (permalink)
I have not had to replace a worn drive shaft joint on a Porsche but have changed a few on my Mini`s over the years.
CV joint issues tend to be caused by damage to the rubber boot which can allow the ingress of road crud which mixes with the grease to form a kind of grinding paste which wears down the interconnecting parts of the joint which can show up in tight turns when the angular input to the joint is at it`s greatest to the output. 
 
I suspect the outer CV joint is subjected to more angular changes in normal operation than the inner as it has to transmit drive in not only up and down movement but also realtive to alteration in steering angle, with that in mind and that you suggest that the noise is noticable at tight steering angles, my first course of action would be to check the outer CV boot for damage which if a cut is found might explain why there could be wear in the joint..?
 
It seems that logically, maximum angular difference from input to output in the outer CV joint is only ever likely to be at slow speed and when steering is at or near full lock, such as during parking manouvers...? 
chrisfield
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/11/05 18:43:46 (permalink)
As replacement of either complete front drive shaft ( if it is the outer CV joint that is damaged) or if just the inner CV joint is the culprit and it can be replaced , are alternative ODM grade replacements suitable rather than going for genuine Porsche parts?
 
Timrice
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Re: 2005 911 997 Carrera C4S Possible front drive shaft issue causing noise slow speed tu 2022/11/05 20:14:55 (permalink)
Could it be caused by the Ackerman Effect? Had this on numerous Porsches, particularly when tyres are worn and in colder weather. Someone like Center Gravity would be able to diagnose/help.

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