Pls tell me its not my IMS! - Page 2 - 6SpeedOnline - Porsche Forum and Luxury Car Resource

Mar 13, 2014 | 10:20 PM

#16

ermed911

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Joined: Jun 2012

Posts: 46

From: Sydney

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Quote:

Originally Posted by bernard.barbour

Just going through this tread, I knew by the symptoms it was the water pump. My 04 did the same a few months ago. IMS is a very rare failure on the 03-04 cars. Let us know when you do get around to doing the IMS what kinda shape it's in. IMHO there are a lot of IMS being replaced out there that are perfectly fine.

I thought single row bearing are more susceptible? Pardon my ignorance

Mar 14, 2014 | 06:11 AM

#17

dgjks

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Posts: 52

From: Ohio

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From my extensive research (long story) - for the 996's, I can give the following stats using information from the lawsuit, websites, and forums

99 - double row (failure 1% or less) - this was mine, how lucky am I?

00 - some double and some single

01-05 - single row - with failure rates up to 8%

06+ - no firm data

Mar 14, 2014 | 06:24 AM

#18

dgjks

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Joined: Feb 2014

Posts: 52

From: Ohio

Rep Power: 15

And as a follow up for replacement bearing options (as long as the old IMS did not start to fail) - here is what I found

1 - pelican bearing - no long term data - change every 30-50K miles

2 - LN double row ceramic (for the 99's)- 0% failure - change every 30-50K miles

3 - LN single row ceramic (for the 00-05's) - <1% failure - change every 30-50K miles

4 - Casper ceramic bearing - no long term data - and can't find them anymore on line

5 - eternal fix - the roller bearing one - no long term data

6 - direct oil feed from tuner RS - can be added to any bearing - no long term data

7 - solution - no long term data - can be done on 00-05's