Quote:
Originally Posted by brjak
The IMS failure is minimal at around 1% as opposed to the 99-05 at roughly 8%.
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To the OP, and not to be a jerk brjak, but these numbers though often cited for 2000-2004, are as reliable as ENRON accounting. 96-99 IMS bearings are dual row and fail a lot less often than the single row found in most 00-04 cars. That's all you can really say with any certainty. Those who try to put a number on the number of single row (2000-20004) failures are doing with with woefully incomplete data, and not to mention that the probability of failure has in great part to do with the maintenance and driving habits of 00-04 owners. No two 00-04 Boxsters (still on their original factory bearings) were subjected to the same treatment, especially when a car has changed ownership numerous times. Also, since most 00-04 Boxsters did not have their IMS bearings replaced when the clutch was replaced as well, the likelihood that we will see an even greater number of IMS failures, for both single and dual row cars 96-04 is great.
Given enough time, neglect and mileage, even a dual row bearing will fail and with more potential for destruction than a single row.
Point being that if you have a 00-04 car, you should get the IMS replaced while the oil is still free of metal debris and not make the mistake of procrastinating if long-term ownership is the plan. If you have a 96-99 car, you should not pass up the opportunity when the clutch has to come out.
Dual row does not mean ever-lasting row.
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