Table of Contents
What year Porsche Boxster have IMS problems?
All Porsche Boxster, Cayman, and 911 vehicles from 1997 through 2008 with the M96 or M97 engine have an IMS (intermediate shaft) that is supported by a sealed ball bearing.
What is a Porsche M97 engine?
The M97 engine was an evolution of the 3.4L M96 engine that powered the 911 Carerra in the 996 generation (99-04). Porsche tweaked the engine by adding VarioCam Plus and modified the IMS bearing to a larger single row during the short life in the 987 Cayman S (06-08).
How common is Porsche bore scoring?
Porsche Bore Scoring While cylinder bore scoring has been an issue on a relatively small percentage of 996 and 997 models, it isn’t a universal problem.
What is Porsche PCM?
Porsche Communication Management, or PCM, is the central control unit for all audio, communication, navigation, and standard vehicle functions within your Porsche. The PCM system features a large high-resolution touchscreen display which makes for easy and convenient operation.
Which Porsches have IMS bearing problems?
The Porsche 911 and Porsche Boxster from model year 1997 to 2005 have a high failure rate of the intermediate shaft bearing also known as an IMS bearing. Its design and construction lead to premature failure of the bearing, which results in catastrophic engine failure.
What does a scored cylinder mean?
In general, scoring of the cylinder wall and piston skirt first presents itself as scuffing that then, over time, leads to scoring. There are a number of main reasons for this to occur which include: Poor fit of piston to bore. Wrist pin walking out of pin bore.
What years did Porsche have IMS bearing issues?
Why did Porsche change the M96 to M97?
As mentioned above, one of the primary reasons for the M97 engine was to get rid of the IMS problem that blew up with the M96 engine. Even with the M96 engine, the failure rate of the IMS bearing is roughly estimated to be 5% or less. The reason that this has blown up to be a “common” problem is due to the cost to replace the engine of a Porsche.
What causes a M97 engine to fail?
M97 Cylinder Scoring Cylinder scoring is the most common issue that results in engine failure for 997’s and the M97 engine. Cylinder scoring is typically the result of a piston striking the side of the cylinder causing grooves in the cylinder wall.
What is cylinder scoring on a 997 engine?
Cylinder scoring is the most common issue that results in engine failure for 997’s and the M97 engine. Cylinder scoring is typically the result of a piston striking the side of the cylinder causing grooves in the cylinder wall.
What is the failure rate of the IMS bearing on Porsche?
Even with the M96 engine, the failure rate of the IMS bearing is roughly estimated to be 5% or less. The reason that this has blown up to be a “common” problem is due to the cost to replace the engine of a Porsche. This is even more so in the case of the M97 engine.