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Join Date: Aug 2017
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IMS dice roll - 987.1 vs 987.2 - One more time..........

We have sold our 79 911 SC, are focusing our search on a Cayman. Great info on various sites discussing the IMS issues. Many different opinions. Many forum posts are now a few years old. So, now that there are higher mileage cars out there, what is the 'current' consensus - are the '08' IMS bearings holding up as good as they were previously reported ? (ie 'low incidence' failures)
We are hoping for early model Gen2 w/PDK - but it appears right now they are very hard to find, and lots of 08's............ It will be weekend-type driver - vs daily driven or tracked.
If I understand correctly - a 'preventative' IMS upgrade on say an '08 is considered not cost effective, but if you dont catch it before its too late - it can get super expensive.
I think my answer is 'wait for a gen 2' if you are concerned bout IMS - but wanted to float this topic again. Thanks for your input
Old 09-08-2017, 06:11 PM
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imho, its either a 987.2 car or roll the dice... I hate rolling dice...
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Old 09-08-2017, 06:40 PM
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Based on reading forums on three continents,

for probably 8 years on the subject, yes the third gen IMS bearings seem much better than the second gen you hear so much about. Like 10 times better. Perfect? No part is. I think I've maybe read of two failures and not sure I know it really was the IMS or just attributed to it by a mechanic or owner.

Are people doing anything to them? Yes, removing a seal to let oil flow freely but not pressure oiling it. See a paragraph beginning "one attempt" here.

Can you replace the third gen? Yes $$$$ can.
Old 09-09-2017, 10:39 AM
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If buying a 987.1 you really don't need to worry about IMSB issues. But there are other issues that can bite you. The 987.2 9A1 motors have proved very reliable...

Cheers
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Old 09-09-2017, 08:46 PM
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And there is the Direct Oil Injection solution. Best, Mark
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Old 09-13-2017, 02:38 AM
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Thank you for your responses; they validate my decision to focus on a gen 2 car.
Old 09-14-2017, 07:54 PM
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