Quote:
Originally Posted by Jay Laifman
I put in the LN ceramic bearings myself many years ago now. If I recall, the warning then was that they weren't good for over 70,000 miles (I may have the actually duration wrong). I'm wondering if there have been any reports of failure akin to the factory bearings? Of course, the reports may be just as non-accurate as the reports of how bad the factory ones were.
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The IMS bearing should be treated as a regular maintenance item. For example, Wayne's ims kit sold by Pelican was recommended to be changed out every 3 years or 30,000 miles, whichever comes first.
There are literally thousands of cars fitted with LN's classic single row IMS Retrofit that are years past their 4 yr / 50k service interval. Those kits have not been sold since about 2012 and were superseded by the Single Row Pro and the IMS Solution once the patents were granted for both.
The Single Row Pro and Classic Dual Row IMS Retrofits have a 6 year or 75k mile service interval.
This needs to be taken into consideration when determining risk of failure especially when the bearings are past manufacturer recommended intervals.
The IMS Solution is the only truly permanent fix designed for the life of the engine. It has no service interval.