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[PaulE]

Well I could be all upset and rant and rave but what good would it do? I'm not happy but it was either fix it or sell it as a roller. What happened immediately before my IMSB failed probably had nothing to do with it. The other parts that failed were probably collateral damage too, but some kind of foreign debris must have gotten into the oil that was splashed into the IMSB and caused it to fail. Porsche should have used an oil-fed plain journal bearing here in its design of the IMSB IMHO. Since NeWArt now has an engine to rebuild with a similar issue, I wanted to share my painful experience.

[Homeoboxter]

Originally Posted by PaulE

Well I could be all upset and rant and rave but what good would it do? I'm not happy but it was either fix it or sell it as a roller. What happened immediately before my IMSB failed probably had nothing to do with it. The other parts that failed were probably collateral damage too, but some kind of foreign debris must have gotten into the oil that was splashed into the IMSB and caused it to fail. Porsche should have used an oil-fed plain journal bearing here in its design of the IMSB IMHO. Since NeWArt now has an engine to rebuild with a similar issue, I wanted to share my painful experience.

That totally sucks and i`m really sorry for this happened to your car. And thanks for sharing your story. May I ask what happened to the original bearing and why you replaced it at the first place? Also, was the seal for the bearing (the LN) removed? Thanks!

[PaulE]

Originally Posted by Homeoboxter

That totally sucks and i`m really sorry for this happened to your car. And thanks for sharing your story. May I ask what happened to the original bearing and why you replaced it at the first place? Also, was the seal for the bearing (the LN) removed? Thanks!

The LN bearings don't have any seals on the bearing itself to remove as far as I know. But my shop bought the bearing and did the work so I don't have first-hand experience of seeing the bearing. But I have no doubt they put it in! I had it done at about 42,000 miles. I bought my car new in 2003 and didn't know about the IMSB potential issue when I bought it, I learned about it later and decided to have it done after I got the class action notice, which was literally a month before my car would become too old for Porsche to be required to pay anything in compensation to me if the original IMSB failed. When I found out that the 2003-4 M96 engines had the highest IMSB failure rate I decided to get the single row pro which puts a dual row bearing in place of the factory single row. I still have the original IMSB which is fully intact although it has oil dripping out of the seals so who knows if it was destined to fail?

And kk2002s, yes my true permanent solution is my daily driver, but not really as I just sold my Acura and got a BMW (with a BMW extended warranty though)!

[Homeoboxter]

Originally Posted by PaulE

The LN bearings don't have any seals on the bearing itself to remove as far as I know. But my shop bought the bearing and did the work so I don't have first-hand experience of seeing the bearing. But I have no doubt they put it in! I had it done at about 42,000 miles. I bought my car new in 2003 and didn't know about the IMSB potential issue when I bought it, I learned about it later and decided to have it done after I got the class action notice, which was literally a month before my car would become too old for Porsche to be required to pay anything in compensation to me if the original IMSB failed. When I found out that the 2003-4 M96 engines had the highest IMSB failure rate I decided to get the single row pro which puts a dual row bearing in place of the factory single row. I still have the original IMSB which is fully intact although it has oil dripping out of the seals so who knows if it was destined to fail?

And kk2002s, yes my true permanent solution is my daily driver, but not really as I just sold my Acura and got a BMW (with a BMW extended warranty though)!

Thanks. Do you happen to have the bearing that failed? I`d be very curious to see how it looks inside and what caused the failure. LN claims they have not received a single complaint about these bearings I`m kind of tending to think ceramic hybrids are not really good for this application and it`s better to stick to stell ball bearings similar to the original dual row design. Would be nice to see how many of these bearings failed and how many of them could make 100k miles without a problem like my original dual-row.