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Old 05-18-2018, 04:11 AM   #1
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The car had 112k miles on it.... well outside the failure window. Don't sweat it!

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Old 05-18-2018, 05:08 AM   #2
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The car had 112k miles on it.... well outside the failure window.
I would have thought the same. Is there a mileage point where there is some level of agreement that failure is unlikely?
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Old 05-18-2018, 05:16 AM   #3
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I would have thought the same. Is there a mileage point where there is some level of agreement that failure is unlikely?
I'm not an expert; very new to these cars as well. However I read all over the internet that 60k miles is the magic number.
Point of fact: there are many anecdotal instances of people who changed their IMS as a precautionary measure, only to have the replacement fail shortly thereafter.

If you ask me, based on what passes for research at my house, I'd say you're safer with an unfailed original IMS at 112k miles, than you are with a recently - replaced IMS (depending on which replacement is installed, of course).

I'm in a similar position myself, with a few extra miles. I've decided that even when I do the clutch this winter, I'll probably leave the IMS well - enough alone.

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Old 05-19-2018, 11:30 AM   #4
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I would have thought the same. Is there a mileage point where there is some level of agreement that failure is unlikely?
Nothing last forever, and they are using Mobil 1 oil.
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Old 05-19-2018, 12:02 PM   #5
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I would have thought the same. Is there a mileage point where there is some level of agreement that failure is unlikely?
Not really, there is always some element of risk, more so with some bearing designs or usage.
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Old 05-19-2018, 01:45 PM   #6
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here is a receipt of mine and this does not include labor yet. You will see the details of the LNE IMS.



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Old 05-18-2018, 05:37 AM   #7
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The car had 112k miles on it.... well outside the failure window. Don't sweat it!

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Except at some point the grease wears away in the bearing, and then what? I had my IMSB replaced at 147K, and took a good look at the bearing. The grease seals were intact, but the grease was nearly gone, leaving virtually no lubrication for the bearing.

If you are in there, you may as well replace a known failure point.

I'm really glad I replaced mine!
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Old 05-18-2018, 06:38 AM   #8
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The car had 112k miles on it.... well outside the failure window. Don't sweat it!

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There is no such thing as a "failure window" to be outside of, ANY IMS can and do fail, regardless of mileage or design.
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Old 05-18-2018, 06:56 AM   #9
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There is no such thing as a "failure window" to be outside of, ANY IMS can and do fail, regardless of mileage or design.
of course that's true. but there's also a preponderance of evidence to indicate that most fail in the mileage range discussed. A commensurate statistic exists to suggest that the likelihood of failure outside of that "window" is reduced dramatically.

JFP, you are absolutely the expert to my novice-ness (I made that word up, haha), and I would immediately bow to your superior knowledge in any arena regarding this car. I'm simply doing the math.
Many or most of us getting into the 986 NOW (when the car is 15 to 20 years old), have entered the 986 world because it's CHEAP FUN. Anything we do to start ruining the CHEAP part, also detracts from the FUN part.
ANY / EVERY used car is a gamble... I'd suggest that the number & likelihood of things that can and do go catastrophically-wrong with a used car, make the frequency of IMS-failure relatively insignificant.
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Old 05-18-2018, 07:14 AM   #10
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The car had 112k miles on it.... well outside the failure window. Don't sweat it!

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Happy days. I just passed 100k miles.
My 2002 single row IMSB has made it
Finally a good nights sleep
Oh dang, there are 20 something more things that can take out my ride
Let the sleepless nights continue.
Oh by the way, there is no such thing as a running, derivable Porsche that is a cheap ride
BUT that is what we sign up for when we buy one
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Old 05-18-2018, 07:44 AM   #11
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Thank you all for the help. It's disappointing it wasn't done at the time of the new clutch but it is what it is.
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