How to Deal with IMS Bearing Failure in a Porsche

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How to Deal With IMS Bearing Failure in a Porsche
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In cars, IMS bearing stands for Intermediate
Shaft (Bearing) which supports the intermediate
shaft on the flywheel side of the motor.
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They work to drive the camshafts indirectly off
the crankshaft and by using this intermediate
shaft, it reduces the speeds of the chains and
prolongs their life.
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And in case of Porsche's horizontally-opposed
flat 6 engine, the IMS bearing has become a
standard build for proper functioning.
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What models are prone to failure?
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The Porsche models like the water-cooled Turbo,
GT2 and GT3 models have the same internal setup
as the earlier air-cooled engines and their
bearings rarely fails.
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However, if you own one of the following, you
should probably be on the lookout for an
excellent European auto mechanic like the ones at
Euro Plus Automotive.
- Any 986 Boxster models
- 987 Cayman Boxster models up to engine number
61504715
- Any 996 models (except for GT and Turbo models)
- 997 3.6ltr with M96/05 up to engine number
6950745
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What goes wrong with Porsche's IMS bearings?
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One of the most significant reasons for bearing
failure in the IMS is when a high load combines
with a lack of lubrication, which causes
overheating.
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The overheated metal in the bearing causes
friction and fracturing, leaving pits behind in
its wake.
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These pits accelerate the cycle of wear and tear
exponentially, causing premature IMS bearing
failure.
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The worst case scenario
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In the worst of cases, a failed IMS bearing will
throw your cam timing off, which will then cause
contact between the valve and piston, leaving you
to purchase another core.
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Otherwise, you will pay a continually increasing
core charge from Porsche beyond the cost of the
replacement engine.
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Repairing it requires a complete engine
disassembly and replacing the intermediate shaft
and often needs a complete rebuild or engine
replacement as well.
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What can you do to fix this problem?
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Prevention, early detection, and replacement of
your IMS bearing before failure are your best
options to save you the cost of engine failure.
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A service technician skilled in European vehicles
can help you detect and replace your IMS bearing
before it is too late.
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If you have a model 2006-2008 engine, the grease
seals can be removed from the factory IMS
Bearings to improve their lubrication and
cooling.
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Another option is to tear down the engine for
installing upgraded IMS bearings, but in older
models (1997-2005), the IMS bearing is accessible
without tearing down the engine.
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It is important to note that any IMS upgrade you
do to your engine must be preventive maintenance.
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And if the engine fails, then you have to
rebuild or replace the entire engine in order to
avoid contaminating of the new IMS bearing.
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What are the warning signs?
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Look for these three warning signs to indicate
IMS bearing failure
- Metallic debris in the oil filter during an oil
change
- Oil leak at the rear of the engine
- Knocking and metallic sounds coming from the
back of the motor
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Your IMS bearing does not have to be an
expensive repair, as if you notice any of these
signs, call your local Porsche mechanic
immediately to get your car checked out.
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If you are in the San Fernando Valley, Canoga
Park, Woodland Hills, or the greater Los Angeles
County, CA, check in with Euro Plus Automotive
for excellent service on European specialty
models.
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