IMS bearing failure for your 996, Y or N? tell us (yr, 996 Mk1 or MK2 failure mode) - Page 4 - Rennlist - Porsche Discussion Forums



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Yes, the IMS failed 90 10.14%
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IMS bearing failure for your 996, Y or N? tell us (yr, 996 Mk1 or MK2 failure mode)

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Old 02-06-2013, 12:33 AM   #46
MiamiC70
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2004 40th Anniversary Edition purchased July 2010 with no issues. I proactively installed an LN bearing at 34k miles pre-delivery and car now has 59k and has been problem free.
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Old 02-06-2013, 06:24 AM   #47
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99 C2 6sp Manual
107k Original Engine and all original components within.
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Old 02-06-2013, 01:31 PM   #48
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02 C2, 106,000 miles. Replace IMSB with LN Engineering bearing. Original bearing looked OK but didn't want to take the chance.
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Old 02-06-2013, 04:27 PM   #49
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MY99, 63k miles, no replacement bearing at this time.
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Old 02-06-2013, 04:34 PM   #50
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NO, and with my shiny LN bearing I no longer worry about it!
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Old 02-06-2013, 04:40 PM   #51
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1999 C2 purchased in 2005 with 55,000 miles, currently has 111,000 miles.
I have no idea if the IMS has ever been changed.
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Old 02-06-2013, 06:35 PM   #52
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2002 MK2. IMSB failed at 80k miles. Replaced with Porsche crate engine. Paid out of pocket.
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Old 02-06-2013, 08:59 PM   #53
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2002 cabrio with 49,959 miles, original engine. hope i don't jinks it!
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Old 02-07-2013, 04:04 PM   #54
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Default 1999 C2

1999 C2 996 with 111,000 miles. Motor replaced at 90k due to cracked cylinder. Porsche Crate motor installed in 2008, 20k miles ago. No problems since.

MP
Mayo, Md
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Old 02-07-2013, 05:33 PM   #55
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1998 Coupe DD with almost 189K klm. I'm the third owner, full service history and to my knowledge, IMSB has not been changed.
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Old 02-07-2013, 07:57 PM   #56
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2003 C2 996 with 62K miles on original bearing and still no issues. Hope to keep it that way
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Old 02-08-2013, 02:25 AM   #57
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2000 C2 with 142k kms, New RMS & clutch et al, in 2010 but left IMSB as is then, as it was not believed to be an issue by previous owner/well-reputed Indy at the time.
Assumed to be a dual row IMSB (early 99 fall production: # ...0220) and still doing well w/out leaks (fingers crossed).
No immediate plan to replace with LN.
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Old 02-08-2013, 01:30 PM   #58
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02 C2 Cab - 62K kms still with original IMSB (no issues to date knock on wood) - plan to install the LN bearing (not the permanent solution - too pricey) at the first opportune moment (clutch, RMS leaking or whatever might come up). Until that point I'm not remotely concerned as the failure rate is far too low to be concerned!!

I also have to comment on statement on page one that due to data corrupting these types of ad hoc surveys that perhaps these types of surveys should be restricted to "renlist members". I have no idea why so many guys on this forum feel that is someone pays $18 his or her opinion is that much better than a "user". Absolute rubbish and you continually commenting "members" need to get over yourselves!!!

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Old 02-08-2013, 01:57 PM   #59
Dennis C
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~121K miles on my C4S on my original bearing. I had my RMS and my intermediate shaft seal replaced at ~74K miles.
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Old 02-08-2013, 04:20 PM   #60
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2001, Dual row IMSB, but preemptively replaced with LN ceramic at 49,500 miles.

Original motor, not a replacement.
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