Engine Failure AFTER IMS replacement
11-01-2018, 11:50 AM
#1
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Engine Failure AFTER IMS replacement
Interesting 996 40th Anniversary Edition for sale in Northern California. The quite lengthy history on the car shows the IMS being replaced in 2014 then the aftermarket IMS bearing failing in 2017 causing a complete engine failure.
http://vi.vipr.ebaydesc.com/ws/eBayI...1&secureDesc=0
http://vi.vipr.ebaydesc.com/ws/eBayI...1&secureDesc=0
11-01-2018, 11:55 AM
#2
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Probably the original IMS had already failed spreading metal throughout the engine.
The replacement was made too late because the engine had already been damaged.
3 years (and how many miles?) later the engine finally died.
The replacement was made too late because the engine had already been damaged.
3 years (and how many miles?) later the engine finally died.
11-01-2018, 12:10 PM
#3
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Yeah, not too surprising. Another unfortunate phenomenon with these engines is once debris from a failing IMSB enters the engine, many things can start failing. Bearings, scavenge pumps, and even the new IMSB to name a few.
I believe this is why the engine must be pre-qualified before replacement. The engine must be inspected to make sure the bearing being replaced hasn't degraded to the point where there's too much debris in the engine. After a certain point, the debris is too much and installing a new IMSB is basically just putting a band aid on a imminent failure. Wasting money on a new IMSB and the labor costs.
I believe this is why the engine must be pre-qualified before replacement. The engine must be inspected to make sure the bearing being replaced hasn't degraded to the point where there's too much debris in the engine. After a certain point, the debris is too much and installing a new IMSB is basically just putting a band aid on a imminent failure. Wasting money on a new IMSB and the labor costs.
11-01-2018, 12:50 PM
#7
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Just because it was replaced doesn't mean it was "Burned through". lol
Since the first IMS was changed at 21K miles, I am pretty confident they replaced the clutch at the same time since the clutch had to come out anyway. One of those "while you are in there..." moments.
Since the first IMS was changed at 21K miles, I am pretty confident they replaced the clutch at the same time since the clutch had to come out anyway. One of those "while you are in there..." moments.
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11-01-2018, 01:01 PM
#8
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I believe this is why the engine must be pre-qualified before replacement. The engine must be inspected to make sure the bearing being replaced hasn't degraded to the point where there's too much debris in the engine. After a certain point, the debris is too much and installing a new IMSB is basically just putting a band aid on a imminent failure. Wasting money on a new IMSB and the labor costs.
If I remember right he lives in GA and co-invented The IMS Solution.
Just can't argue with someone who has probably seen more used IMS bearings than anyone else.
11-01-2018, 01:02 PM
#9
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I would have replaced it if it were me.
My clutch got replaced at 33K when The IMS Solution was installed.
11-01-2018, 01:40 PM
#10
Another thing to note is that just because the IMS bearing was compromised, it doesn't mean that it was the component that triggered the failure. It could have been one of the other 6,234,578 modes of failure and the bearing was just collateral damage.
11-01-2018, 01:58 PM
#11
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11-01-2018, 03:25 PM
#12
Burning Brakes
Similarly got mine with 23k miles, had the IMS replaced at 25k and had the clutch done at the same time because the only cost it added was the clutch itself and no additional labor. One less thing to replace down the road.
11-02-2018, 12:58 AM
#13
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I dunno, how much is a clutch kit? $1,000? If the clutch has 80% life left after I pulled it apart, I might be inclined to just put it back as-is. Then again, that assumes I have time to inspect, then buy the parts, wait for them to arrive, then reassemble. Not everyone has the time or space.
11-02-2018, 06:52 AM
#14
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I dunno, how much is a clutch kit? $1,000? If the clutch has 80% life left after I pulled it apart, I might be inclined to just put it back as-is. Then again, that assumes I have time to inspect, then buy the parts, wait for them to arrive, then reassemble. Not everyone has the time or space.