996 potential buyer - not the normal IMS question
01-23-2018, 04:02 PM
#16
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For a seller who has not replaced it - then they will tell you it's meaningless, most Porsche and used car dealers will say this. For the private seller who has replaced it, they will tell you it was done pro-actively, and not make a big deal because of the accusation that the bearing was replaced on failure, and the engine was seconds from exploding. Any discussion of the IMSB results in wary buyers, so it's like the crazy uncle who pees in the flower bed.
01-24-2018, 07:27 AM
#17
01-24-2018, 02:49 PM
#19
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One mistake/misleading fact on IMS(B) style, on point # 1&2 - they changed over to the single row bearing, from the dual row bearing some time in 2000 during the run of M96/04 engines...Early M96/04's had dual row bearings (my engine is # M96/04 66103432 - it had the dual row IMSB - it's now got the dual row Solution)
01-24-2018, 03:21 PM
#20
One mistake/misleading fact on IMS(B) style, on point # 1&2 - they changed over to the single row bearing, from the dual row bearing some time in 2000 during the run of M96/04 engines...Early M96/04's had dual row bearings (my engine is # M96/04 66103432 - it had the dual row IMSB - it's now got the dual row Solution)
11-14-2019, 10:44 AM
#21
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I have a 2000 996 factory custom built car (GT3 Replica) had no issue with IMS, have checked engine number and its a dual row IMS. Car on a smidge under 100k. If real seal decides to fail might change if I am bored that weekend, or if my oil tests come back dodgy ofc.
11-15-2019, 03:45 PM
#22
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"I have a 2000 996 factory custom built car (GT3 Replica) had no issue with IMS, have checked engine number and its a dual row IMS."
Engine #'s have little to nothing to do with what IMS(B) - that would be the bearing, not the IMS itself - is in the car. In other words - don't be so sure unless you drop the transmission and look at the IMSB flange. The rear main seal (even if leaking) is a MUCH less important issue than the IMSB. I believe the only reason it gets any attention, is that if it leaks, it shows outwardly at the same spot as the IMSB (no way to tell the difference without dropping the tranny).
Engine #'s have little to nothing to do with what IMS(B) - that would be the bearing, not the IMS itself - is in the car. In other words - don't be so sure unless you drop the transmission and look at the IMSB flange. The rear main seal (even if leaking) is a MUCH less important issue than the IMSB. I believe the only reason it gets any attention, is that if it leaks, it shows outwardly at the same spot as the IMSB (no way to tell the difference without dropping the tranny).
11-15-2019, 04:11 PM
#23
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Don't know about knowledge 996 owners, but I have owned mine since 2006 and still have the original IMSB(and clutch) with 76,000 mi.on my '99 996. I do believe in regular oil and filter changes, and dissecting the filter for signs of metal /or plastic pieces. No one knows for sure, but many are now saying the percentage is pretty low for failures of the IMSB.