986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - IMS Upgrade

mikefocke · 11-13-2010, 11:20 AM

My understanding is that, no, you can't tell what revision of the bearing assembly your car has if it is a replacement engine until you pull the transmission and clutch off. '02 replacement engines may be redone '97-'01 engines or redone '02 engines and '02 was around the time they switched from dual to single row bearings.

There are no comparative statistics on which of the 3 assembly designs are more prone to failure except in Porsche's records and they aren't telling.

So yes, you have to possibility of a failure of the IMS.

Now the good news is they don't all fail and the failures are spread out over many possible years of ownership.

11-13-2010, 11:20 AM	#82
mikefocke Registered User Join Date: Aug 2005 Location: Sanford NC Posts: 2,579	Ray since no one else has answered you My understanding is that, no, you can't tell what revision of the bearing assembly your car has if it is a replacement engine until you pull the transmission and clutch off. '02 replacement engines may be redone '97-'01 engines or redone '02 engines and '02 was around the time they switched from dual to single row bearings. There are no comparative statistics on which of the 3 assembly designs are more prone to failure except in Porsche's records and they aren't telling. So yes, you have to possibility of a failure of the IMS. Now the good news is they don't all fail and the failures are spread out over many possible years of ownership.