IMS again

[JFP in PA]

Originally Posted by piper6909

Help me understand why no other IMS retrofit could be reused. Thanks.

With ball or roller bearing types, the extraction process literally jams the bearings into the race and cages, damaging both. The cages in particular tend to break up and the races get dented or scored due to the force exerted on them. Once this happens, the bearing is going to fail if reused.

[piper6909]

Originally Posted by JFP in PA

With ball or roller bearing types, the extraction process literally jams the bearings into the race and cages, damaging both. The cages in particular tend to break up and the races get dented or scored due to the force exerted on them. Once this happens, the bearing is going to fail if reused.

Thanks! Makes sense.

[JFP in PA]

Originally Posted by piper6909

Thanks! Makes sense.

This is also why retrofit kit manufacture's have always said if you get an install cocked and stuck, and have to remove it, do not then re install the retrofit bearing as it is now damaged. This was particularly an issue with single row bearings which tended to do this more often than the dual row bearings. This is one of the reasons Jake released his "Faultless" tool system, which prevents getting the bearings cocked during installs.

[pilot4fn]

IMS again... or not???
My 2001 Boxter Base had IMS done 90.000mi ago (then 60.000mi on odo) with this part: 996.105.017
Can I find out from this number if the bearing is single or double row IMS?

Are these IMS bearings items that needs to get done every so often or only to replace the factory original with updated one?
If these need to be canged contionously as a service, I guess it's due in my car now...

[mikefocke]

Originally Posted by pilot4fn

IMS again... or not???
My 2001 Boxter Base had IMS done 90.000mi ago (then 60.000mi on odo) with this part: 996.105.017
Can I find out from this number if the bearing is single or double row IMS?

Are these IMS bearings items that needs to get done every so often or only to replace the factory original with updated one?
If these need to be canged contionously as a service, I guess it's due in my car now...

Part is listed as a housing. with engine numbers. So I wonder if it was really a bearing change.

[mikefocke]

Part is listed as "housing". Commonly called "flange". So how do we know if a bearing was changed?

[pilot4fn]

Originally Posted by mikefocke

Part is listed as "housing". Commonly called "flange". So how do we know if a bearing was changed?

Good question. I have from previous owner the receipt of the IMS bearing and change - clutch change was done also reputable shop, both at the same time. They took pictures of the job as well that shows bearing to be pulled out and also other works that was done... this in consideration, I do trust that it ws done...

Related to the Flange only on this part number, it shows on the invoice as "996105017 IMS bearing kit, Porsche Boxter 97-04" at 750€ price. Price for the work was as a separate line item.

After reading much more on this subject and trying to sort out any 'warnign signs' of wearing out IMS bearing, I can't find any warnign signs commonly written about - besides the current IMS bearing mileage.