More like on the 2005 and it seems to be a running change so some later build '05 have larger bearing. Larger bearing cannot be changed without total engine teardown. They have also had failures. The only way this 2004 would have the larger bearing is if it has a Porsche remanufactured replacement engine.
Porsche finally definitively addressed the IMSB in 2009 by designing the IMS out of the engine.
There are more robust bearings that can be mounted in 2004 and earlier engines.
read post #4 in this thread.
http://forums.pelicanparts.com/porsche-996-997-forum/677477-ims-warning-light-good-idea-not.html
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2013 991.1 Carrera S Cab
2004 996 Turbo CAB X50 sold
2003 996 cab 6 speed Sold
1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold
DE instructor since 1985
Last edited by FPB111; 05-17-2012 at 07:53 PM..
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