996 performance upgrades
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From: Cincinnati, OH
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Just remove your muffler and add tips to save lots of weight, but it is a bit loud. No complaints from anyone on mine yet....99 C2. H & R springs are great with 1.25 inch drop. Light forged rims, EVO intake, and plenum/flash. Most HP gains from the plenum, but drives much better with spings and weight reduction. The 99-2000 Carreras do not have IMS issues..... "Far less than 1%" They were not included in the class action lawsuit because they had very few IMS issues.
Very weird. I guess its the 3.4l motors that were excluded then?
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Yes. It seems the dual row bearings lasted longer, or at least had significanly fewer problems than the single bearing design. The 3.4 does have the dual bearings. Mine has 90K now, and no IMS issues. I have heard many of the 3.4's going well over 100K miles without IMS issues.
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They did say older that 10 years or 130K were excluded, but the dual bearing design was not a failure prone issue. Only the single row. Not the Turbo 911's either as they have a different assembly.
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Yes. It seems the dual row bearings lasted longer, or at least had significanly fewer problems than the single bearing design. The 3.4 does have the dual bearings. Mine has 90K now, and no IMS issues. I have heard many of the 3.4's going well over 100K miles without IMS issues.
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From: Tucson, AZ
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Model year 2001 – 2005 Porsche 911 vehicles manufactured with an IMS between May 4, 2001 and February 20, 2005, excluding the Turbo, GT2, and GT3 models, with VINs in the following ranges:
- WP0AA29991S622763-WP0AA29901S623641
- WP0CA299X1S654064-WP0CA29971S655284
- WP0ZZZ99Z1S644465
- WP0ZZZ99Z2S603927
- WP0AA299X2S620005-WP0AA29922S624193
- WP0BA29922S635067-WP0BA299X2S635740
- WP0CA29932S650004-WP0CA29952S655611
- WP0AA29903S620063-WP0AA29993S624175
- WP0BA29913S635062-WP0BA29983S635639
- WP0CA29943S650062-WP0CA29913S653887
- WP0ZZZ99Z3S641690-WP0ZZZ99Z3S644167
- WP0ZZZ99Z4S604191
- WP0AA29974S620062-WP0AA29934S623041
- WP0BA29984S635061-WP0BA29974S635231
- WP0CA29904S650061-WP0CA29924S653818
- WP0AA29935S620061-WP0AA29925S620245
- WP0BA29965S635061-WP0BA29995S635085
- WP0CA29995S650061-WP0CA29995S650254
- WP0AA29905S715077-WP0AA29905S717475
- WP0AB299X5S740081-WP0AB29955S742109
- WP0CA29935S755064-WP0CA29935S755209
- WP0CB29915S765072-WP0CB29925S765212
- WP0ZZZ99Z5S731099
- WP0ZZZ99Z5S701444
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Posts: 271
From: Cincinnati, OH
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Model year 2001 – 2005 Porsche 911 vehicles manufactured with an IMS between May 4, 2001 and February 20, 2005, excluding the Turbo, GT2, and GT3 models, with VINs in the following ranges:
- WP0AA29991S622763-WP0AA29901S623641
- WP0CA299X1S654064-WP0CA29971S655284
- WP0ZZZ99Z1S644465
- WP0ZZZ99Z2S603927
- WP0AA299X2S620005-WP0AA29922S624193
- WP0BA29922S635067-WP0BA299X2S635740
- WP0CA29932S650004-WP0CA29952S655611
- WP0AA29903S620063-WP0AA29993S624175
- WP0BA29913S635062-WP0BA29983S635639
- WP0CA29943S650062-WP0CA29913S653887
- WP0ZZZ99Z3S641690-WP0ZZZ99Z3S644167
- WP0ZZZ99Z4S604191
- WP0AA29974S620062-WP0AA29934S623041
- WP0BA29984S635061-WP0BA29974S635231
- WP0CA29904S650061-WP0CA29924S653818
- WP0AA29935S620061-WP0AA29925S620245
- WP0BA29965S635061-WP0BA29995S635085
- WP0CA29995S650061-WP0CA29995S650254
- WP0AA29905S715077-WP0AA29905S717475
- WP0AB299X5S740081-WP0AB29955S742109
- WP0CA29935S755064-WP0CA29935S755209
- WP0CB29915S765072-WP0CB29925S765212
- WP0ZZZ99Z5S731099
- WP0ZZZ99Z5S701444
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The dual row bearings are on model years 1997-1999 and some 2000-2001, the single row bearing on model years 2002-2004 and some 2000-2001, and the updated M-97 “big bearing” on model years 2005-2008.
I'm not exactly sure which of the "some" were and were not equipped with the dual bearings. I'm guessing the VIN numbers may steer you in the right direction.
I'm not exactly sure which of the "some" were and were not equipped with the dual bearings. I'm guessing the VIN numbers may steer you in the right direction.
Last edited by BOOSTTT; Jan 22, 2014 at 05:41 PM. Reason: needed to add info
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The dual row bearings are on model years 1997-1999 and some 2000-2001, the single row bearing on model years 2002-2004 and some 2000-2001, and the updated M-97 “big bearing” on model years 2005-2008.
I'm not exactly sure which of the "some" were and were not equipped with the dual bearings. I'm guessing the VIN numbers may steer you in the right direction.
I'm not exactly sure which of the "some" were and were not equipped with the dual bearings. I'm guessing the VIN numbers may steer you in the right direction.
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Joined: Sep 2011
Posts: 640
From: Tucson, AZ
Rep Power: 47
I think I saw something where they started switching around April of 2000, but not 100% sure. But why are "some" 2001's different? I don't understand how to tell which one has what from 2000-2001. I'm surprised someone on here has not set the record straight yet. It should be considered good news that your VIN is not in that list I guess.
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"Hope"fully you're in the 90%. Cheers!
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