Porsche IMS Bearing
There is a lot of discussion around Porsche IMS Bearing issues pertaining to Porsche Boxsters, Caymans, and 911’s from the years 1997 to 2007. The problem ultimately stems from a design flaw from Porsche. With no real solution having been made by Porsche, many aftermarket solutions are available to solve the IMS Bearing issue. We at PKW Motorwerks, have worked on many Porsche’s with this issue and have successfully resolved the problem. If you find yourself owning a 1997-2007 Porsche Boxster, Cayman, or 911 - with the exception of Turbo, GT2, or GT3 models - consider having your IMS bearing replaced before it’s too late!
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IMS Bearing Failure
The intermediate shaft bearing (IMS) is a sealed unit containing steel balls and a permanent lubricant. It was intended to last the entirety of the engine’s life, however, it notoriously fails in M96 and early M97 engines. Over time, the IMS bearing starts to deteriorate and the engine oil attacks the seal of the bearing and the outer race eventually begins to make contact with the IMS flange. The result then leads to the valve-train timing becoming compromised and components collide resulting in metal debris traveling throughout the engine – eminently leading to an engine rebuild or full replacement.
When Will it go bad?
There are no hard facts on when an IMS bearing will fail. We find that the most common occurrences of IMS issues are found on Porsche’s that have low mileage and receive infrequent oil changes compared to the more heavily driven – high mileage Porsche’s. There is little to NO warning when it comes to IMS failure. The best and only real prevention is to have the IMS bearing replaced before it’s too late.
What Porsche models are prone to IMS failure and should be replaced?
IMS Bearing replacement
The IMS bearing retrofit™ from LN Engineering is the best solution available for IMS bearing replacement and the one we suggest to all of our customers. We have successfully installed hundreds and we find it to be the best aftermarket solution available. Once you have experienced an IMS failure there is no turning back, so preventative measures must be taken, otherwise you will be in for an engine rebuild. Give us a call today and we can take you through the costs and procedure to getting your IMS bearing replaced.
**Some images are provided under copyright courtesy of LN Engineering