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03-13-2024, 02:58 PM | #3015 | |
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Technical discussions in this thread are nothing new, and are relevant.
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Re WPC bearings, I was wondering about that too. Correct me if I'm wrong (memory's rusty here), but aren't WPC treated bearings ones which have had some sort of physical surface treatment (which minisculey increases the clearance, to no significant affect AFAIK) and also has some sort of coating over the bearing?
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. Last edited by Assimilator1; 03-13-2024 at 03:04 PM.. |
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03-16-2024, 05:59 AM | #3016 | |
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Yes, the data from the OEM parts was rerun with the latest software version with no issues found. As far as I know, WPC is a form of micro bead blasting with no coating applied |
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03-16-2024, 03:54 PM | #3017 | |
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Re OEM parts, are you allowed to tell us what clearance the simulation said it should be?
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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03-19-2024, 06:07 PM | #3018 |
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And this is what rod bearings should look like even after 130k miles! Jump to 2:50s to go directly to the bearing shots (bloody link goes to the beginning, even though 170s is in the link!!).
Thanks to Matt@Evolve for publishing this btw. PS The fact that it's not a high revving engine is irrelevant (IIRC it's redline is ~7k).
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. Last edited by Assimilator1; 03-19-2024 at 06:13 PM.. |
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03-20-2024, 03:48 AM | #3019 | |
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03-20-2024, 04:41 AM | #3020 |
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S55 stock redline is 7600 rpms...at least one day in time would have been considered pretty high revving!
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03-20-2024, 04:57 PM | #3021 |
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Ah ok, that is a bit higher than I thought, and yes that is still pretty high I'd say . As I recall, the later M3/4s have a lower redline, perhaps that's where I got 7k from.
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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03-22-2024, 07:11 PM | #3023 |
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Pics of the old bearings?
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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04-11-2024, 09:44 AM | #3024 |
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04-11-2024, 09:59 PM | #3025 |
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2010 E92 M3
Original bearings afaik Replaced with BE Bearings & ARP Bolts by EAS in Anaheim 140,750 miles at the time of replacement |
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04-11-2024, 10:28 PM | #3026 |
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04-15-2024, 02:55 PM | #3027 | |
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Considering the mileage, and being the earlier type, they're not too terrible!
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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04-22-2024, 09:06 PM | #3028 |
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So I just bought a 2009 E93 M3... Primairly city driven by an older lady.. 53.000km.. Should I start by changing the rod bearings now or should I wait.. Cost isnt a big issue.. thanks guys
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04-23-2024, 05:44 AM | #3029 |
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Always tricky to know. Could hold up for another 200k km or blow tomorrow. But at 53k km I personally would wait (although replaced at 60k km myself, which turned out to be early). Ps. 2009 I believe use the earlier 088/089 shells which proven to wear more.
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04-23-2024, 09:48 AM | #3031 | |
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Most S65s have proven to live along life treated correctly. Key reason to replace the shells really is when buying used and without real knowledge how its has been driven and maintained. Quite a few are stated to have been driven by old ladies... |
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04-23-2024, 06:23 PM | #3032 | |
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04-24-2024, 08:28 AM | #3033 |
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04-24-2024, 04:55 PM | #3034 |
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2009 model? Yea I'd definitely replace the bearings, even though it's low mileage, most of those earlier bearings pulled come out heavily or severely worn!
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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05-06-2024, 10:13 AM | #3036 | |
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No cases I'm aware of where defective BE bearings were the root cause of a failure. |
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