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Roro
Long Beach


Joined: 01 Oct 2010
Posts: 6399



PostPosted: Wed Oct 09, 2019 12:43 pm    Post subject: 997.1 GT3 - Rear creaking noises Reply with quote

Seven years after the infamous front suspension creaking noises thread, I have developed a new creak! Sounds like creaky hinges on an old door

I should make an audio/video clip and post up, but to summarise -

- Sound is at the rear of the car
- Originally I suspected my aftermarket cage (fitted many years ago) but why would the creak suddenly start now if it was related to that?
- Cold/warm car doesn't matter, the noise is there from the off
- Roads don't need to be particularly bumpy to hear the creaking noises
- It seems to have been getting louder over time, I must have first noticed a faint noise a couple of months ago, which has steadily got louder over time
- Seems to be audible inside the car only - I had the missus drive the car up and down the driveway slowly and walked after the car, she could hear the noise inside, but I couldn't hear anything on the outside (maybe the engine/exhaust noise drowns out the exterior noise...)
- Today I went out on a drive and the noise was there, then suddenly it vanished while I was driving down a mildly bumpy road - but then a couple miles later the noise reappeared

I'm stumped
Dont know

Any ideas what it might be? Taking the car to see someone locally tomorrow to hopefully diagnose the issue
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2007 997.1 GT3
2017 F87 M2
 
  
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NXI20
Paul Ricard


Joined: 02 Feb 2008
Posts: 3384
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Wed Oct 09, 2019 2:00 pm    Post subject: Reply with quote

Cage, 100%

My 996 started doing it a few months ago after many years of total silence. Loosening off all the bolts & re-tightening has restored silence on the road. I can still provoke a bit of a creak on track but that falls under "because race car" Very Happy
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Nick

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC in Red (for sale)
 
  
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Roro
Long Beach


Joined: 01 Oct 2010
Posts: 6399



PostPosted: Wed Oct 09, 2019 2:47 pm    Post subject: Reply with quote

Mr. Ramsay! Thanks. I'm hoping that's all it is. Now I think about it... I had removed the diagonal bar a few years back (to make it easier to load weekend away bags in the rear), and then re-fitted it a few months back. Maybe that has set everything off. Will see what Tognola say tomorrow, and then on the weekend I'll loosen and retighten the cage as suggested and see if that works Thumb
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2007 997.1 GT3
2017 F87 M2
 
  
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NXI20
Paul Ricard


Joined: 02 Feb 2008
Posts: 3384
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Wed Oct 09, 2019 2:51 pm    Post subject: Reply with quote

I've got the kit to attach up to 6 switchable microphones to various bits of the car. You wear headphones while driving and it allows you to pinpoint where the noise is coming from.

Give me a call if you need to borrow it Thumb
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Nick

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC in Red (for sale)
 
  
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Roro
Long Beach


Joined: 01 Oct 2010
Posts: 6399



PostPosted: Wed Oct 09, 2019 3:07 pm    Post subject: Reply with quote

Nice one Nick thumbsup
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2007 997.1 GT3
2017 F87 M2
 
  
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Roro
Long Beach


Joined: 01 Oct 2010
Posts: 6399



PostPosted: Sun Oct 20, 2019 11:10 am    Post subject: Reply with quote

Uncle Nick! You were right, it was the cage Very Happy

I took the car to the local garage as mentioned, who put it up on the ramp, looked at the rear springs and said the noise was coming from one of the springs which was broken. I took a pic, attached. I wasn’t convinced though, to me the area marked out on the pic is just where the plastic covering the spring has cracked but not the spring itself

So anyway, I got home, loosened the cage bolts and then tightened them up again, and hey presto the creek is almost completely gone

I would’ve been a little annoyed at spending almost 1k replacing two springs and then still having to deal with the creaky noises. Never mind though, all sorted now Thumb

(Although there is the possibility that I do also coincidentally have a broken spring - any thoughts on that from looking at the pic? Car seems to handle fine, on road anyway)
_________________
2007 997.1 GT3
2017 F87 M2
 



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NXI20
Paul Ricard


Joined: 02 Feb 2008
Posts: 3384
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Sun Oct 20, 2019 11:15 am    Post subject: Reply with quote

Definitely not broken. A broken spring would result in the car being lower on that corner in any case.
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Nick

2004 GT3 CS in Atlas Grey with too many mods to list!
1995 993 GT2 recreation in Polar Silver
2010 GT3 CS in Riviera Blue Smile
1978 Carrera SC in Red (for sale)
 
  
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Roro
Long Beach


Joined: 01 Oct 2010
Posts: 6399



PostPosted: Sun Oct 20, 2019 11:31 am    Post subject: Reply with quote

Thumb
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