Ooops, I said it, the dreaded IMS issue of the boxsters and 996’s.  This weekend we tackled upgrading the IMS bearing in a buddy’s 1999 996 C2.  The IMS issue is the main cause of failures on the engines found in the early boxsters and 996’s.  The early design was a dual row ball bearing, followed by the later design of a single row bearing.  Typically failures are seen on lower mileage cars that are driven sporadically.  The theory for …

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