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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Mar 10, 2016 5:10 pm    Post subject: Reply with quote

Yes, I stated that a while back. Long time is 2 years and 24000 miles for a car running on the oil it came off the production line with, especially when it's being run in.
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Mar 11, 2016 3:12 pm    Post subject: Reply with quote

Just another thing worth noting. In the 2 years I've been a member of this site, I've only ever witnessed the posting of one IMS bearing failure.......on a 997 Question
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Halcyon
Imola


Joined: 02 Nov 2015
Posts: 777
Location: Somerset


PostPosted: Fri Mar 11, 2016 6:46 pm    Post subject: Reply with quote

Are we still waiting for the diagnosis on this one?
http://www.911uk.com/viewtopic.php?t=110239

You're doing a great job of giving people "real world" facts about the IMS issue that if you were to believe the interwebs, you'd think every single one failed! I'm sure there's lots of people that appreciate it as much as me Smile

But, of course, we all know that it's bore scoring that affects all the 3.6 engine ever made!! Evil or Very Mad
(maybe..) Grin
 
  
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Mar 11, 2016 7:41 pm    Post subject: Reply with quote

Thank you kind sir Cap
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Niall996
Imola


Joined: 07 Nov 2010
Posts: 839
Location: Paris


PostPosted: Fri Mar 11, 2016 8:44 pm    Post subject: Reply with quote

alex yates wrote:
Just another thing worth noting. In the 2 years I've been a member of this site, I've only ever witnessed the posting of one IMS bearing failure.......on a 997 Question


Are you sure about that? I seem to recall a few (generally newbies who then disappear) posting IMS failures?
 
  
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Mar 11, 2016 8:59 pm    Post subject: Reply with quote

Niall996 wrote:
alex yates wrote:
Just another thing worth noting. In the 2 years I've been a member of this site, I've only ever witnessed the posting of one IMS bearing failure.......on a 997 Question


Are you sure about that? I seem to recall a few (generally newbies who then disappear) posting IMS failures?


Links please Smile
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996lee
Hockenheim


Joined: 26 Aug 2014
Posts: 670
Location: Nottingham


PostPosted: Fri Mar 11, 2016 9:28 pm    Post subject: Reply with quote

alex yates wrote:
Just another thing worth noting. In the 2 years I've been a member of this site, I've only ever witnessed the posting of one IMS bearing failure.......on a 997 Question


There is a guy on the 997 forum on a bore scoring poll that says his ims failed alex
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Chris_in_the_UK
Estoril


Joined: 19 Mar 2014
Posts: 3509
Location: Harrogate


PostPosted: Fri Mar 11, 2016 10:03 pm    Post subject: Reply with quote

996lee wrote:
alex yates wrote:
Just another thing worth noting. In the 2 years I've been a member of this site, I've only ever witnessed the posting of one IMS bearing failure.......on a 997 Question


There is a guy on the 997 forum on a bore scoring poll that says his ims failed alex


Cannot find the thread- any link?

EDIT - found it.

Did this ever get confirmed as a bearing failure - there was suggestions of a chain jump or shaft failure.

Either way it's bad news!.
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Mar 11, 2016 11:16 pm    Post subject: Reply with quote

So is that 2 997s vs. 0 996s?
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Harv
Suzuka


Joined: 18 Sep 2014
Posts: 1204



PostPosted: Sat Mar 12, 2016 8:08 am    Post subject: Reply with quote

[quote="Halcyon"]Are we still waiting for the diagnosis on this one?
http://www.911uk.com/viewtopic.php?t=110239

Yes still waiting for an update on what has caused that.

I think so far I'm the only one who changed the bearing because play was found upon inspection.
 
  
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Eldavo
Monza


Joined: 21 Aug 2013
Posts: 235
Location: Newcastle upon Tyne


PostPosted: Sat Mar 12, 2016 8:42 am    Post subject: Reply with quote

Is there any similar data for the 987 Boxsters?

Specifically the 2.7 earlier cars with the single row bearing.

Asking for a mate obviously Wink
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu May 26, 2016 5:39 pm    Post subject: Reply with quote

Data collected so far for 102 cars (26th May 2016).

Still no 996 failures since July 2014. A couple of 997 failures in the last 6 months.


Here's a couple of bar charts showing which engines and models have sustained a failure:

Total number of failures - 5.88% (Not including the LN as a original failure)
of which 3.4 - 0% and 3.6 - 8%
of which all Anniversary, X51 & C4 - 0%, C2 - 8.7% and C4S - 9.5%


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4b4
Nürburgring


Joined: 15 Jun 2015
Posts: 421
Location: Suffolk


PostPosted: Thu May 26, 2016 8:42 pm    Post subject: Reply with quote

No problems showing with mine at the moment Alex, but the C4S statistics are seriously worrying!

Do you think this is a reflection of more replies, or more of the C4S's being Tiptronic or what?

Is there a percentage correlation between manuals vs Tips?

Not getting paranoid, promise!
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu May 26, 2016 8:49 pm    Post subject: Reply with quote

A few of us came to the conclusion that the failures all happened around the time Porsche went to the 24k/2-year service intervals, and although this not being the culprit of the bearing failing (the culprit being the bearing itself not being borderline strong enough) may have played a major part in the failures. Dont know
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trig_112
Monza


Joined: 11 Apr 2014
Posts: 173
Location: Northants


PostPosted: Thu May 26, 2016 9:37 pm    Post subject: Reply with quote

I don't think I have ever offered up the info on my car. 2004 996.2, 3.6 manual C2.

No documented failure or engine change. Up to 72k miles at the minute.

There is an invoice for a IMS replacement at 65k miles by Autofarm, using a part number 106-08.2IMSR6569. I'm not sure exactly what that is, the cost for the part on the invoice in £460.50 if that helps suss it out.

Oil changes:
17k
21k
32k
36k
52k
65k
72k
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Dec 01, 2018 11:57 am    Post subject: Reply with quote

3.5 YEAR REVIEW

Data collected so far for 132 cars (1st December 2018).

Still no 996 failures since July 2014 apart from 1 member with a 3.6 who won't enter his data so I'm unable to include it in the results.

Here's a couple of bar charts showing which engines and models have sustained a failure:

Total number of failures - 4.5% (Not including the LN as a original failure)
of which 3.4 - 0% and 3.6 - 6.7%
of which all Anniversary, X51 & C4 - 0%, C2 - 5.9% and C4S - 9.1%




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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Sat Dec 01, 2018 5:08 pm    Post subject: Reply with quote

Hi Alex,

The PO of my car (VXBANDIT on this forum) suffered a dropped valve seat at 110k miles. Not sure if you want to include that as a non failing IMS... As it had a full rebuild I’m not expecting there to be an issue in my ownership if I look after it and change oil regularly.

The car had done a lot of motorway mileage in its life - about 50k in a specific 18 month period and was regularly serviced - which based on everything I read would mean the bearing was in an optimal environment.

Just some more info for you in case it is useful.
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14468
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Dec 01, 2018 5:12 pm    Post subject: Reply with quote

thumbsup
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rdodger
Monza


Joined: 08 Apr 2018
Posts: 151
Location: Cheshire


PostPosted: Sat Dec 01, 2018 5:22 pm    Post subject: Reply with quote

Is this bearing failure or all bearing replacement failed or not?
 
  
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Locosaki
Spa-Francorchamps


Joined: 03 Jul 2016
Posts: 296
Location: Fife


PostPosted: Sat Dec 01, 2018 5:24 pm    Post subject: Reply with quote

Mine was on 149k when it developed problems, non ims related though it was lack of oil pressure at idle for me
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