Purchasing 911, car had engine rebuild in 2015, no mention of ims bearing

[mjposner]

Looking at 2003 911 with 100k miles.  Had 17k in service in 2015, see attached.  No mention of ims bearing.  Thoughts?

[DBJoe996]

It could be that the 2003 engine has the large IMS bearing, in which case the engine must be disassembled, engine cases split, in order to replace the bearing.  The good thing, if that is the case, very few large IMS bearings have ever failed, and if it has it mostly due to neglect (no oil changes, not changing the oil every 5K miles, and so on).

[JFP in PA]

2 hours ago, DBJoe996 said:

It could be that the 2003 engine has the large IMS bearing, in which case the engine must be disassembled, engine cases split, in order to replace the bearing.  The good thing, if that is the case, very few large IMS bearings have ever failed, and if it has it mostly due to neglect (no oil changes, not changing the oil every 5K miles, and so on).

 

If the engine was a 2003 (you can tell from the numbers on sump rail), it would have the small, serviceable single row IMS bearing from the factory.

If the paperwork does not mention the IMS, it was not done.

[DBJoe996]

I was working from memory and it turns out I am dead wrong.  It is confusing with the changeover designs.

From 1997 to 1999, Porsche use a dual row intermediate shaft bearing which has proven to be as robust as the larger single row used from 2006 through 2008 model years. The IMS Class Action Lawsuit filed against Porsche revealed the factory Dual Row was much stronger than the Single Row used from 2000-2005.

IMS 101 – IMS Retrofit

IMSRETROFIT.COM

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Visit the post for more.

 A 2003 would have the smaller single row bearing.  Just get it replaced with the Solution and you are done.

[Richard Hansen]

On 5/14/2019 at 8:44 AM, JFP in PA said:

 

If the engine was a 2003 (you can tell from the numbers on sump rail), it would have the small, serviceable single row IMS bearing from the factory.

If the paperwork does not mention the IMS, it was not done.

 

On 5/14/2019 at 10:26 AM, DBJoe996 said:

I was working from memory and it turns out I am dead wrong.  It is confusing with the changeover designs.

From 1997 to 1999, Porsche use a dual row intermediate shaft bearing which has proven to be as robust as the larger single row used from 2006 through 2008 model years. The IMS Class Action Lawsuit filed against Porsche revealed the factory Dual Row was much stronger than the Single Row used from 2000-2005.

IMS 101 – IMS Retrofit

IMSRETROFIT.COM

---

Visit the post for more.

 A 2003 would have the smaller single row bearing.  Just get it replaced with the Solution and you are done.