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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 12-05-2017, 02:24 PM
  #931
RSBro
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Originally Posted by Tim Cooper View Post
If it's been doing short trips i'd make sure the gearbox oil has been changed, I change at half the book distance and the oil comes out tired.

5k for engine oil could be slight overkill but see what you think at next change.
I will certainly add that to the list of things to check when I take it in for it's next service, in another 3k miles or so.

I'd just read from various sites and magazines that non-IMS replaced vehicles probably will have more longevity with a 5k service, but I know the book says 10k, so maybe if the next inspection comes out looking clean, I'll bump it up to 7k. I plan to only drive mine 2x a week or so.
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Old 12-05-2017, 09:05 PM
  #932
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Originally Posted by RSBro View Post
I will certainly add that to the list of things to check when I take it in for it's next service, in another 3k miles or so.

I'd just read from various sites and magazines that non-IMS replaced vehicles probably will have more longevity with a 5k service, but I know the book says 10k, so maybe if the next inspection comes out looking clean, I'll bump it up to 7k. I plan to only drive mine 2x a week or so.
Stick to 5K unless you can afford a $20K motor...
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Old 12-06-2017, 01:20 PM
  #933
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Originally Posted by 808Bill View Post
Stick to 5K unless you can afford a $20K motor...
That's what would make me sleep better at night, and what everything I've read in Excellence, Total911, this forum, etc. have said for a non-changed IMS bearing.
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Old 12-09-2017, 01:59 PM
  #934
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2003 C2 cab with 75k. Changed IMS as it needed a clutch (10% left). Original bearing looked fine. Went to the LN single row retrofit dual row pro.
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Old 12-09-2017, 02:08 PM
  #935
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Originally Posted by NIACAL4NIA View Post
Vario-cam engines don't like thicker oils. My 2002 ran on 0w-40 and the bearing was fine at 90k. The original bearing is sealed. Porsche never approved 10w-Î. Too much Zddp can harm your catalytic converter.
Local race shop with a large fleet of 996 cars said same thing. They only run 0W40 MobileOne.
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Old 12-27-2017, 11:09 AM
  #936
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Default 2000 C2 Cab

71k on original engine no issues
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Old 01-01-2018, 10:48 PM
  #937
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Default 2000 Carrera C4

IMS Bearing upgraded at 153000 km. The old one looked fine (double row). Upgraded to a Direct Oil Flow bearing and oil line.
cheers
Doug
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Old 01-07-2018, 01:04 PM
  #938
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IMS dual row replaced at 53,800 miles on an '00 C4. Looked perfect when removed. Replaced with IMS DOF from TuneRS
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Old 01-11-2018, 10:44 AM
  #939
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A few guys at the local track run that IMS DOF from tuner RS. They seem to really like it.
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Old 01-11-2018, 09:59 PM
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'03 3.6. 61k stock single row IMS. Zero play tight as a virgin. Lots of life left. Replaced today with LN Engineering IMS Pro Retrofit, single row ceramic bearing

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