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IMS failure for your 997 car, Y or N? tell us (yr, 997.1, .2, m96, m97, failure mode)

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IMS failure for your 997 car, Y or N? tell us (yr, 997.1, .2, m96, m97, failure mode)

 
Old 11-16-2017, 12:35 PM
  #871  
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[QUOTE=Petza914;14608104]That statement should be clarified and written
1. If you have an early 2005 car with the smaller IMS bearing, you should probably get the retrofit. It doesn't matter what mileage it is at.

My 2005 statement was just based purely on the information provided in the posts. I couldn't break down to the bearing detail.

I have just reviewed my notes of all the comments of users who reported an IMS failure and I don't think a single one noted down to the detail of the bearing type in their initial comments.

***Edited*** Per Jake's note below, only true way to determine bearing type is visual inspection. He notes engine numbers cannot be trusted to determine bearing type.

Last edited by CMA; 11-16-2017 at 01:38 PM. Reason: Per notes in post #873 advising engine numbers alone may not be valid to determine bearing type.
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Old 11-16-2017, 12:43 PM
  #872  
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Also I have attached my spreadsheet here if anyone wants to play with it in the future.
Attached Files
File Type: xlsx
911 IMS Failure Analysis.xlsx (89.3 KB, 72 views)
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Old 11-16-2017, 01:23 PM
  #873  
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The VIN and/ or the engine number directives cannot be trusted. I find that they are wrong more often than they are right.

With any 2005 MY vehicle you must perform a visual inspection of the bearing flange to determine which IMS Bearing the engine is fitted with. The directives do more harm than good, as people who were confident they had an M97 diameter IMSB went about life without worry, only to have a failure and find out that they really had the problematic M96 diameter single row bearing fitted.

Trust nothing of what you read, and only 1/2 of what you see.
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Old 11-16-2017, 02:18 PM
  #874  
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Jake-Have you seen an "AT" engine number with a small IMS Bearing?

I have a 01/05 production date with a M97/01AT68665578 engine number.
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Old 11-26-2017, 01:14 PM
  #875  
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No issues with IMS here
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Old 11-26-2017, 03:17 PM
  #876  
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I had the IMS bearing failure this past spring on my 2005 Carrera Cabriolet (997). 50,000 miles. Cost $17,000 to rebuild the engine.
Don't you think that Porsche should pay the same $4,000 that it agreed to do in the 2013 Suit?
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Old 11-27-2017, 08:20 PM
  #877  
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Default 2006 997.1 (build Oct 2005) No IMS failure

2006 997.1 C2S Cab (build Oct 2005), 48K miles No IMS failure
Bought in 2010 at 36K mies. Driven almost daily the first three years with high rev (6K) shift a lot of time. The past 4 years have been driven less agressive on averge 3-4K shift and occationally up to 6K shift once a week. Only tracked once after I found out about the IMS problem.

I want to thank you all of the people response to this thread. It built a great knowlege base for the problem. For those of you not familar with IMSB, PCA recently has a video well documented all of the differrent generation of IMSB (two rows bearing, single row beariung , and large bearing).

Last edited by rwai; 11-27-2017 at 08:23 PM. Reason: add infromation
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Old 11-28-2017, 03:02 PM
  #878  
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Hey Fellas,

I know it's not exact, but can somebody decipher this VIN for the engine build date?

WP0AB29946S742393
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Old 11-28-2017, 06:29 PM
  #879  
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Originally Posted by SteveFoerster View Post
I had the IMS bearing failure this past spring on my 2005 Carrera Cabriolet (997). 50,000 miles. Cost $17,000 to rebuild the engine.
Don't you think that Porsche should pay the same $4,000 that it agreed to do in the 2013 Suit?
Steve - sorry to hear that! What type of bearing did you have? The smaller, single-row bearing, or the larger bearing?
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Old 12-02-2017, 10:34 PM
  #880  
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Default 2007 997.1 C4S 42,000 miles

No IMS problem

Last edited by hollenbachda; 12-02-2017 at 10:36 PM. Reason: add additional info
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Old 12-02-2017, 10:37 PM
  #881  
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No IMS issue in my 2006 Cayman S or 2007 997.1 C4S
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Old 12-17-2017, 06:03 PM
  #882  
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2005 997 Cab S 3.8 tip w/58k miles and no IMS issues. Had a water pump fail recently and it has a new one of those but no signs of IMS issues.
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Old 12-25-2017, 12:36 AM
  #883  
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Just replaced IMS bearing on 2005 Carrera S, 12/2004 production date. 31,500 miles. Regular oil changes from first owner (10 years). Unknown from 2nd owner (2 years). Better safe than sorry, I replaced it and the original was returned to me. It was OEM and in perfect condition. No visible deterioration at all on bearing seals. I am glad I did it, I no longer worry about it cratering my motor anymore. Also put in a new clutch (40% left I was told) and RMS.
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Old 01-08-2018, 03:10 AM
  #884  
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i have a 68501XXX engine ...(>68509790) so i guess i have the small bearing ..

as of 2018, can anyone tell me which bearing is the best?? is the LN the only option???

it's 799, comparing to the climate buttons fix at 129, it's only slightly better in value... lol
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Old 01-08-2018, 03:55 AM
  #885  
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sorry. forget to mention. it's a 05 c2s, m97 engine tiptronic
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