IMS aftermarket Upgrade Question
11-15-2011, 03:50 PM
#1
7th Gear
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IMS aftermarket Upgrade Question
I'm wondering how reliable aftermarket IMS bearings are and if there have been any recurring IMS failures after the installation.
Has anyone bought an '05 through '08 Carrera that didn't have IMS issues, had the bearing replaced as a preventive measure, then had failures after that??
Has anyone bought an '05 through '08 Carrera that didn't have IMS issues, had the bearing replaced as a preventive measure, then had failures after that??
11-21-2011, 08:39 PM
#2
Says there were some on the non teardown kits....from LN
That said, we've put the best bearings we can in our IMS Retrofit Kits and IMS Upgrades to give your M96 the best fighting chance for a long service life. However, with any mechanical system, we do expect there to be failures. With thousands IMS Upgrade and IMS Retrofit bearings in service, we have experienced zero failures of intermediate shafts with our triple bearing IMS Upgrade and similarly zero failures of the dual row bearing IMS Retrofits. However, of all three revisions of the intermediate shaft used by Porsche, the single row bearing found on some 2000-2001 and all 2002-2005 models is the most flawed and even with our ceramic bearing, we have had three engine failures where the single row ceramic bearing was found to have failed (although not conclusively as the cause of the engine failure, given there are dozens of known modes of failure and secondly, these are open bearings susceptible to damage from foreign object debris). Even so, we have over a 99.9% success rate in the 3+ years our bearings have been in service.
That said, we've put the best bearings we can in our IMS Retrofit Kits and IMS Upgrades to give your M96 the best fighting chance for a long service life. However, with any mechanical system, we do expect there to be failures. With thousands IMS Upgrade and IMS Retrofit bearings in service, we have experienced zero failures of intermediate shafts with our triple bearing IMS Upgrade and similarly zero failures of the dual row bearing IMS Retrofits. However, of all three revisions of the intermediate shaft used by Porsche, the single row bearing found on some 2000-2001 and all 2002-2005 models is the most flawed and even with our ceramic bearing, we have had three engine failures where the single row ceramic bearing was found to have failed (although not conclusively as the cause of the engine failure, given there are dozens of known modes of failure and secondly, these are open bearings susceptible to damage from foreign object debris). Even so, we have over a 99.9% success rate in the 3+ years our bearings have been in service.
11-21-2011, 08:42 PM
#3
Rennlist Member
LN Engineering, the ones that you can easily upgrade are the OLDER IMS design of 05, early 06. If you got 07/08, you got the updated IMS that is vastly improved, and also much harder/more expensive to upgrade to aftermarket.
