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johntyboy
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Joined: 17 Jan 2017
Posts: 34
Location: Lake District.


PostPosted: Tue Apr 11, 2017 1:27 pm    Post subject: 996.2 GT3 LSD Worn? Reply with quote

Hi Gents

Just wondering if there is a definitive way of telling if the LSD is worn.

I have had a search on the forum but not found an answer.

The reason I ask is it span what felt like an inside wheel while I was going up a steep hairpin bend. (I was crawling at about 15mph at the time)

Car is a 2004 996 GT3 with 33000 miles.

Kind Regards
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infrasilver
Fast & Furious
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Joined: 04 Oct 2010
Posts: 6985
Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Tue Apr 11, 2017 2:24 pm    Post subject: Reply with quote

I had a couple of LSD's that I was trying to find out info on regarding wear etc, the thread turned out to be quite a good resource for LSD's, hopefully you can get some useful info from it.

http://911uk.com/viewtopic.php?t=101673
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911UK
Porsche Community
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Joined: 15 May 2002
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1997 Porsche 993 Carrera 2

PostPosted: Tue Apr 11, 2017 3:14 pm    Post subject: Reply with quote

the oem diff is only really good for 20k kms

certainly doesnt last very long at all

04 car with 33k, it would be worn out
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Robertb
Long Beach


Joined: 01 Sep 2003
Posts: 6001
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Tue Apr 11, 2017 3:30 pm    Post subject: Reply with quote

911UK wrote:
the oem diff is only really good for 20k kms

certainly doesnt last very long at all

04 car with 33k, it would be worn out


Seriously?? How many ££££ is a new one?
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Cheburator
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Joined: 15 Aug 2014
Posts: 86



PostPosted: Tue Apr 11, 2017 4:12 pm    Post subject: Reply with quote

Robertb wrote:
911UK wrote:
the oem diff is only really good for 20k kms

certainly doesnt last very long at all

04 car with 33k, it would be worn out


Seriously?? How many ££££ is a new one?


Porsche Direct are selling a brand new Cup unit for £1500 from memory on eBay. That will last forever and comes with the usual 2 yrs warranty. Then you have to factor in installation, which is not that much actually... £2k all in is my prediction.
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Last edited by Cheburator on Tue Apr 11, 2017 4:21 pm; edited 1 time in total
 
  
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infrasilver
Fast & Furious
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Joined: 04 Oct 2010
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PostPosted: Tue Apr 11, 2017 4:17 pm    Post subject: Reply with quote

You can remove/install the diff with the gearbox still in the car.
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johntyboy
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Joined: 17 Jan 2017
Posts: 34
Location: Lake District.


PostPosted: Tue Apr 11, 2017 7:23 pm    Post subject: Reply with quote

Thanks for the info guys, will have a good read of that link.

Kind Regards
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Cunno
Watkins Glen


Joined: 13 Dec 2008
Posts: 2155
Location: Nottinghamshire


PostPosted: Tue Apr 11, 2017 7:56 pm    Post subject: Reply with quote

£1500 for diff cup plates is a lot. I had JZM replace my riff plates with cup plates in 2010 all in £1200 including plates at about £650. Now running guard diff unit I'd do some ringing around personally.
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Cunno
Watkins Glen


Joined: 13 Dec 2008
Posts: 2155
Location: Nottinghamshire


PostPosted: Tue Apr 11, 2017 8:04 pm    Post subject: Reply with quote

http://www.fvd.de/de/en/Porsche-0/944-141-34/-/-/cart/insert/VID_34948627-VCD_66248031-gid_152-sort_4-display_50-itemnumber_9973329859A-itemstate_0-quantity_1/Friction_disc_set_996__997_GT3_CUP__05-07_.html

For example I'd ring Fearnsport I'm sure Matt could beat this
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Cheburator
Trainee


Joined: 15 Aug 2014
Posts: 86



PostPosted: Tue Apr 11, 2017 8:32 pm    Post subject: Reply with quote

Cunno wrote:
£1500 for diff cup plates is a lot. I had JZM replace my riff plates with cup plates in 2010 all in £1200 including plates at about £650. Now running guard diff unit I'd do some ringing around personally.


We are talking about the whole unit - carrier and all. That price is a Billy Bargain, especially with a 2yrs warranty
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Cunno
Watkins Glen


Joined: 13 Dec 2008
Posts: 2155
Location: Nottinghamshire


PostPosted: Tue Apr 11, 2017 9:06 pm    Post subject: Reply with quote

Cheburator wrote:
Cunno wrote:
£1500 for diff cup plates is a lot. I had JZM replace my riff plates with cup plates in 2010 all in £1200 including plates at about £650. Now running guard diff unit I'd do some ringing around personally.


We are talking about the whole unit - carrier and all. That price is a Billy Bargain, especially with a 2yrs warranty


Interesting why replace full unit only the plates wear out?
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Disco
Estoril


Joined: 13 May 2008
Posts: 3553
Location: Hertfordshire

2010 Porsche 997 GT3

PostPosted: Wed Apr 12, 2017 2:48 pm    Post subject: Reply with quote

Cunno wrote:
Cheburator wrote:
Cunno wrote:
£1500 for diff cup plates is a lot. I had JZM replace my riff plates with cup plates in 2010 all in £1200 including plates at about £650. Now running guard diff unit I'd do some ringing around personally.


We are talking about the whole unit - carrier and all. That price is a Billy Bargain, especially with a 2yrs warranty


Interesting why replace full unit only the plates wear out?


I don't know if it applies in this particular case, but the usual reason is labour costs (i.e. swapping in a complete unit off the shelf works out cheaper than taking out the old one, stripping down and rebuilding then reinstalling). Even the independents can have fairly hefty hourly rates, especially down South...

At the supplier end their pricing can also reflect inventory/warehousing costs, so they mainly carry stock of assemblies rather than discrete components (with the individual bits and bobs priced at a premium or not available individually at all).

The final consideration is that since we are talking about a motorsport part, for racing teams they may favour having the thing ready built and ready to swap in simply for time reasons, so there may be a supply of surplus completely built spare units in the market suppressing the prices?
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NXI20
Approved Trader


Joined: 02 Feb 2008
Posts: 3213
Location: South Bucks

2004 Porsche 996 GT3 Mk2

PostPosted: Wed Apr 12, 2017 6:36 pm    Post subject: Reply with quote

Cheburator wrote:
Cunno wrote:
£1500 for diff cup plates is a lot. I had JZM replace my riff plates with cup plates in 2010 all in £1200 including plates at about £650. Now running guard diff unit I'd do some ringing around personally.


We are talking about the whole unit - carrier and all. That price is a Billy Bargain, especially with a 2yrs warranty


It would were it true; however, Motorsport parts don't carry any warranty at all.
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