Quote:
Originally Posted by Nimbus117
You may disagree but it doesn't mean you are correct. Everyone having to change their bearings 'just in case' on the back of a small percentage of failures is bad advice.
Much better is to keep an eye on it during oil changes, fit IMS Guardian or replace if it bothers you that much.
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The % of failure is both inaccurate and almost irrelevant. If you have a 2001-2005 there is a very obvious flawe in the engine design. One that can be exacerbated by the stewarship, or lack of, by the previous owner if you're someone that purchased the car used. Porsche just settled claims for precisely these years. Generally big companies don't do something like this unless there's something in their own internal records confirming that a problem isn't a small % but well beyond the industry avearage for what is acceptable. Records from dealerships and engine replacement programs that would not play well before a U.S jury. Otherwise Porsche would have settled on
all Boxster/Carrera claims, dual row bearings included. But they didn't -- just the single row. That's a point that shouldn't be lost on a single row bearing owner. Either are bad design but single is by far the worst. Just ask Porsche's lawyers.
So it's not a "just in case" retrofit, it's addressing a known problem now confidentially confirmed by the manufacturer. The IMS Guardian is probably good advice but since a clutch is not an item that's going to last forever a single row Boxster/Carrera owner would be wise to simply address the problem rather than waiting for a flawe to turn into game ender. Relying on unconfirmed, inaccurate and undisclosed %'s to any degree is questionable/shaky advice.
There are things you know (engine design flawe) and the things you don't know (% of IMS failures). I replaced a dual row bearing, but if I had a single row IMSB, I'd be swapping it out before the ink on that class action settlment check had even dryed.
p.s.
relying on the oil change filter inspection to detect IMS failure is like cargo inspection for narcotics at the U.S. Border.
The probability that a physuical search of every 100th car/container will land on the very car carrying drugs is a long shot.
You'd be quiet the lucky guy to be changing your oil just when the IMSB decided to let go.
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