IMS Bearing, I'm a 99 Percenter

[maytag]

Originally Posted by JFP in PA

That is complete nonsense. We have seen no statistically significant relationship between mileage and failure rates.

Jfp, would you elaborate on this for us, please?
General consensus all over the internet seems to corroborate what the mechanic told him; if your IMS hasn't failed by xx miles (I've read anywhere from 60k to 75k) then it's very unlikely it WILL fail.

I value your knowledge, as it's based on real experience, rather than just what I've read, haha. Can you tell us what's behind this idea, and what your own experience says are real factors?



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[JFP in PA]

Originally Posted by maytag

Jfp, would you elaborate on this for us, please?
General consensus all over the internet seems to corroborate what the mechanic told him; if your IMS hasn't failed by xx miles (I've read anywhere from 60k to 75k) then it's very unlikely it WILL fail.

I value your knowledge, as it's based on real experience, rather than just what I've read, haha. Can you tell us what's behind this idea, and what your own experience says are real factors?



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Over the years, we have see several IMS failures, which were confirmed by at least a partial engine tear down (we don't say IMS failure until we know it was). The mileage of these cars were all over the place, some were 'garage queens doing less than 1K miles a year, others were daily drivers with well over 100K miles on them at the time of failure. If you looked at the confirmed failures we have seen, while the mileage data seems almost randomly scattered, one very obvious similarity was that most were single row engines, with only a smattering of dual rows, similar to the data published in the factory's legal case. An outlier in the data was one owner that had a relatively low mileage failure, he had a higher mileage replacement engine installed, only to have that one fail many thousands of miles later. Last I heard, he was driving a Nissan.

On the basis of this experience, I don't see a mileage relations relationship. Other shops may or may not have had a different history, but we don't go by unconfirmed chatter off the web, I can only speak for what we have seen.

[maytag]

Originally Posted by JFP in PA

Over the years, we have see several IMS failures, which were confirmed by at least a partial engine tear down (we don't say IMS failure until we know it was). The mileage of these cars were all over the place, some were 'garage queens doing less than 1K miles a year, others were daily drivers with well over 100K miles on them at the time of failure. If you looked at the confirmed failures we have seen, while the mileage data seems almost randomly scattered, one very obvious similarity was that most were single row engines, with only a smattering of dual rows, similar to the data published in the factory's legal case. An outlier in the data was one owner that had a relatively low mileage failure, he had a higher mileage replacement engine installed, only to have that one fail many thousands of miles later. Last I heard, he was driving a Nissan.

On the basis of this experience, I don't see a mileage relations relationship. Other shops may or may not have had a different history, but we don't go by unconfirmed chatter off the web, I can only speak for what we have seen.

Thank you.
And the delineating line for when a shingle row was used, rather than the dual row? Do I understand this happened mid - year '02?

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[JFP in PA]

Originally Posted by maytag

Thank you.
And the delineating line for when a shingle row was used, rather than the dual row? Do I understand this happened mid - year '02?

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No. The transition period was the 2000-2001 years; with either year, you can have either a single or dual row, and the only way to know is to pull the car apart and look, regardless of what the internet chatter thinks. I personally own a 2000 and 2001 M96 engine cars that were both purchased new. The 2000 car is a very early (in the model year) car, and it was a single row. The 2001 was one of the last built that model year, and it was a dual row, which is exactly backwards from what a lot of people think it should be. Both now carry IMS Solutions.