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IMS failure for your 997 car, Y or N? tell us (yr, 997.1, .2, m96, m97, failure mode)

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IMS failure for your 997 car, Y or N? tell us (yr, 997.1, .2, m96, m97, failure mode)

 
Old 01-09-2012, 10:41 PM
  #196  
cab&coupe
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What's your car's birth date?
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Old 01-10-2012, 01:59 AM
  #197  
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Originally Posted by Palmbeacher View Post
LN has been backpedaling on the longevity claims of late, and now even admits to several failures of their single-race bearing. It's nothing against Charles, he's always been measured in his approach, at least by comparison with the other chap who tends rather more hyperbolic at times. From a legal standpoint, LN is wise to disclaimer conservatively.

That said, these are mechanical parts, and as such subject to outliers and defects. LN can't help it if these engines are designed such that failure of a single bearing is sufficient to cause sudden and catastrophic damage. They also can't be privy to every installation...whether an engine is already loaded with metallic debris from failing internals, that will find its way into the open LN bearing and chew it to pieces...or whether an installer follows meticulous protocol or mandhandles the job. All we can say is that at present, the LN bearing is surely the best best going.

And that said, the problem is that a directive to change the bearing every so-many miles is not an effecacious protocol, because these bearings (including the LN) seem to fail suddenly rather than wear-out gradually. Complicating the issue further is that their IMS Guardian recognises only ferrous debris, and the single-race LN bearing until recently had a plastic ball cage...which is what failed in the one case LN could determine the precise cause.

The labour to inspect and/or change the bearing is such that for those who are not DIY guys, it tends to get done in concert with a clutch overhaul. And for those of us who do not mistreat the clutch, that really isn't an every-50K-mile proposition...in fact, in all my years with so-called performance autos, I've never had to replace a clutch, even at upwards of 150K miles. "Thankfully" the previous owner of my 997 was murder on the clutch, so it was about 50% gone at 30K. My IMS bearing was fine, but I put in the LN replacement anyway. Now I'm thinking perhaps I jumped the gun...should've perhaps borne with the stiff clutch pedal a while longer, in time to get the revised LN bearing with the steel cage, and a Guardian.

Or perhaps I need to either sell the car or write myself a scrip for Prozac
Sounds like you've obsessed and been proactive enough. Time to go out and drive the pi$$ out of the dear. Life being short and all that . And it's good for your bearing. Have fun
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Old 01-10-2012, 06:04 AM
  #198  
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2007 C2S; 42k; no IMS issues.
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Old 04-13-2012, 02:08 AM
  #199  
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2008 C2S, 40k. So far, NO failure. *knocks wood* According to service records, RMS service was performed at around 33K miles to address a leak.
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Old 05-25-2012, 03:18 PM
  #200  
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2006 C2; 24k miles, No failure. Previously: 2005 987 Boxster; 45k miles; No failure.
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Old 05-25-2012, 05:18 PM
  #201  
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07 S 997 18,000 no problem
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Old 05-25-2012, 10:35 PM
  #202  
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07 997 40,800 miles, just change the oil, no metal on the magnetic drain plug, No sign of metal on oil filter paper. No oil consumtion. No sign of leaks.
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Old 05-25-2012, 11:35 PM
  #203  
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05 997.1 39,000 no IMS issues. It's a later build car with the updated bearing. I did have valve lifter issues that required all the lifters be replaced. No problems since (35,000) at all.
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Old 05-30-2012, 04:39 PM
  #204  
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2006 C2S. No IMS issues until 110 000km. Then engine was rebuilt (not because it needed it, but supercharger install and bearing changed)
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Old 05-30-2012, 05:03 PM
  #205  
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Originally Posted by 997C2S9ff View Post
2006 C2S. No IMS issues until 110 000km. Then engine was rebuilt (not because it needed it, but supercharger install and bearing changed)
110Km? AWESOME!
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Old 05-30-2012, 07:35 PM
  #206  
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Yep, in fact no major issues at all since I bought it in 2008. Very happy with it
But I guess the engine won't handle another 110K with the charger
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Old 05-30-2012, 09:21 PM
  #207  
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Originally Posted by Zeus993 View Post
110Km? AWESOME!
110k KM = ~ 68k miles. Not that unusual
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Old 05-30-2012, 09:34 PM
  #208  
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2006 C4 29,000 no problem
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Old 05-30-2012, 09:53 PM
  #209  
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[QUOTE=997C2S9ff;9572972]Yep, in fact no major issues at all since I bought it in 2008. Very happy with it
But I guess the engine won't handle another 110K with the charger[/QUOTE]

But I bet yer gonna try !
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Old 05-30-2012, 10:03 PM
  #210  
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Several of us have more than 68 K on the 911. I have 75 K and I know others that have more miles.
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