Hi again forum. Just stumbled upon a thread on reddit of a IMSB failure of a replacement dual row LN bearing , where the IMSB is obviously completely damaged, but the rest of the engine survived as it was done just in time. Failure was 21k miles after installation. As described there was metal in oil upon purchase, and buyer knew there was a problem, therefore the tear down. Seems he has found no other explanation to why the bearing has failed. LN has received the bearing so they will probably do a post mortem on it. After reading here for a long time i have been given the impression that these dual row bearings "never fail", and have no recorded failures. Just wanted to post this to record that these to, can fail (all thou very rare it seems). https://www.reddit.com/r/Porsche/s/ktJdcZzYXy
Stumbled upon thread of LN ims failure - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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YOUR RESEARCHStumbled upon thread of LN ims failure - 986 Forum - The Community for Porsche Boxster & Cayman Owners
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
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4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
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I don't think they claim their dual row never fails. Their claim is that The Sulution never fails. Having said that, good to know.
Lots of variables. Case, installation accuracy, condition of rest of engine, driving condition, etc. I seem to recall a 6 year/75k target for replacement in normal driving.
I can tell you with absolute certainty that the dual row can fail. At what rate who knows, but i have seen 2 personally.
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