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350matt
350matt, Mechanical Engineer
Category: Porsche
Satisfied Customers: 21111
Experience:  BEng Hons, worked in the car industry for the last 22 years
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Is there any truth that unlike other 996 series 911 models

Resolved Question:

Is there any truth that unlike other 996 series 911 models for 2001, the turbo models are not subject to the IMS bearing issue because they use a derivative of the Lemans engine used in the GT3?
Submitted: 11 months ago.
Category: Porsche
Expert:  350matt replied 11 months ago.
hello this is correct the 996 turbos are a bit of an oddball as they are a mix of air cooled heads and water cooled block and a combination of parts the main thing regrading the IMS is that its gear driven in the Turbo engine vs. chain driven in the NA 996 engine and furthermore doesn't have the problematic ballbearing the NA 996 engine has.This doesn't make the IMS in the Turbo engine indestructible but given the number of these cars around and the age and number of miles they're racking up and for some the engine hp mods they receive and the usage they're subjected to it doesn't appear the IMS is a weak link in the Turbo engine
350matt, Mechanical Engineer
Category: Porsche
Satisfied Customers: 21111
Experience: BEng Hons, worked in the car industry for the last 22 years
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