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Old 08-16-2019, 05:33 PM
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BillC BillC is offline
 
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Just one minor correction: the M97 (2005-2008) motors do not have the IMS bearings "cast" into the engine. It is simply that the bearing itself is larger than the opening where the mount and seal go, so you can't replace the bearing without splitting the case. The bearing was installed with the rest of the IMS when the engine was assembled.

Generally, the harder the car has been driven, the less likely the IMS bearing will fail. It is usually the low-mileage garage queens that have the highest risk of failure.

Also, the Boxsters didn't get the M97 engines until the 2007 model year. They still had the M96 engines in '05 and '06, despite being 987 models.
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