What years did the 911 have IMS issues?
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 happens if the IMS bearing fails?
In the worst-case scenario, IMS bearing failure can disrupt the cam timing causing impact between the pistons and valves, resulting in shattered valves, smashed pistons, and other extensive engine damage.
How common is IMS failure?
According to information published about the Eisen IMS Class Action Lawsuit, the single row IMS bearing used in 2000 through 2005 model years is reported to have an 8% failure rate, versus less than 1% with the dual row IMS bearing which has twice the load capacity of the single row bearing used by Porsche.
Did 997 have IMS issues?
Porsche has been at the center of a recent controversy due to IMS (intermediate shaft) bearing failure in some 997 production cars, but recent data shows that there may not be as many problems as initially thought.
What year is IMS bearing?
General Information on the IMS Bearing There are 3 variations in design: the dual row bearing on model years 1997-1999 and some 2000-2001, the single row bearing on model years 2002-2004 and some 2000-2001, and the updated M-97 “big bearing” on model years 2005-2008.
How do you diagnose IMS failure?
The most obvious one would be knocking or grinding sounds coming from your motor. If you are experiencing this, your Porsche may be in IMS bearing failure. Other signs include oil leaks or oils with metallic shards in the oil filter, signs that something has broken off inside of your car.
How much does it cost to fix IMS?
The cost of a IMS Retrofit replacement bearing and labour for installation is usually more than $4,000 but can be done in conjunction with the clutch. This is a small investment compared to the cost of rebuilding or replacing the entire engine.
How much does it cost to replace the IMS bearing in 911?