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Gelbster · 09-29-2016, 09:16 AM

Markus,
You have a welcome & different perspective than the rest of us because you have access(via language) to different information - the German-speaking Porsche Forums. I try but stumble at Lagerdeckel !
This is important because I notice a difference even between U.K. and USA forums.Because our ideas here are developed in isolation we are vulnerable to 'drinking our own Cool-Aid'
Your list of 7 IMSB problems/causes is interesting.I have never seen such a list before. The pragmatic question is - what can we do about it?
Any of the 7 issues ,if severe enough will eventually cause IMSB failure. Let's suppose I have a still-running engine with one or more of these issues(but have no way of measuring it). I remove my original OEM IMSB at 90K miles and find the seals 'blown, the tube with oil in it, the bearing a little wobbly, no ferrous debris in the filter or pan. I have 'caught; it just in time.
So what do I replace the IMSB with - suspecting I have one or more of the 7 deadly problems with the tube?
The answer is - the most fault-tolerant bearing available - The Solution.But will it pass "Pre-Qualification" for Pro installation+warranty??
If not ,what to do ? The second best choice is debatable - as are the tolerances for all the 7 deadly IMSB sins in your list and the way they do/do not interact to cause premature failure of the IMSB.
I guess the second best choice is DIY install of "The Solution" in this scenario or a cylindrical roller bearing if on a budget?
Thank you for your interesting perspective that may clarify this mystery a bit more.

09-29-2016, 09:16 AM	#25
Gelbster Registered User Join Date: May 2014 Location: S.California Posts: 2,029	Markus, You have a welcome & different perspective than the rest of us because you have access(via language) to different information - the German-speaking Porsche Forums. I try but stumble at Lagerdeckel ! This is important because I notice a difference even between U.K. and USA forums.Because our ideas here are developed in isolation we are vulnerable to 'drinking our own Cool-Aid' Your list of 7 IMSB problems/causes is interesting.I have never seen such a list before. The pragmatic question is - what can we do about it? Any of the 7 issues ,if severe enough will eventually cause IMSB failure. Let's suppose I have a still-running engine with one or more of these issues(but have no way of measuring it). I remove my original OEM IMSB at 90K miles and find the seals 'blown, the tube with oil in it, the bearing a little wobbly, no ferrous debris in the filter or pan. I have 'caught; it just in time. So what do I replace the IMSB with - suspecting I have one or more of the 7 deadly problems with the tube? The answer is - the most fault-tolerant bearing available - The Solution.But will it pass "Pre-Qualification" for Pro installation+warranty?? If not ,what to do ? The second best choice is debatable - as are the tolerances for all the 7 deadly IMSB sins in your list and the way they do/do not interact to cause premature failure of the IMSB. I guess the second best choice is DIY install of "The Solution" in this scenario or a cylindrical roller bearing if on a budget? Thank you for your interesting perspective that may clarify this mystery a bit more.