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12-03-2023, 11:16 AM | #2949 |
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Hmm, can't see why a couple of percent decreased overall oil pressure would result in dangerously low feed to the main bearings. Care to explain mate?
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12-03-2023, 08:08 PM | #2950 |
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Were there class action lawsuits on any of those?
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12-03-2023, 08:13 PM | #2951 | |
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Main bearings failures happened long before increased bearings were available. (Granted not nearly as often as rod bearing failures). You reduce the risk of rod bearing failure, then the potential for main bearing failure is still there granted a much lower rates and due to the cost of preventatively changing the main bearings, many choose to accept that risk.
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12-03-2023, 11:47 PM | #2952 |
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I think generally speaking, a manufacturer's decision to upgrade a part later doesn't carry much evidential weight in a lawsuit against them. The policy rationale for excluding such evidence is that no manufacturer would upgrade a part with safety in mind if doing so was seen as an admission of any guilt/wrongdoing. You can still sue them on whatever grounds exist, just that a superseding part isn't going to be the legal admission one would would otherwise expect. So I think BMW's decision to upgrade any parts mentioned in this conversation are neither here nor there in that respect.
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IamFODI370.50 |
12-05-2023, 07:01 AM | #2953 | |
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B) We don't know what the inflection point is, where the decrease is meaningful.
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12-05-2023, 07:09 AM | #2954 | |
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Generally, I don't think main bearings are a wear item, on any sort of reasonable (say, 500,000+ mile) timeline. So, a main bearing failure I would classify as either a design issue (which includes aftermarket parts, once added) or a manufacturing issue. Any manufacturing issues should be well sorted (kaboom) by 10,000 miles, so these days I'm looking for causes. Main bearing failures on higher mileage (anything over 10,000 miles), totally stock cars are pretty rare.
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IamFODI370.50 Robocop30512.00 |
12-05-2023, 01:48 PM | #2955 | ||
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Quote:
AFAIK BMW's weren't found for busting NoX emissions like VW was? Quote:
That's how they should be, although many people don't seem to believe that. I don't suppose you have photos of your old LS2 shells do you?
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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; 12-05-2023 at 02:21 PM.. |
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AndyW697.00 spammysammich1816.00 |
12-05-2023, 05:32 PM | #2956 |
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No, I threw them away, I was mad I wasted the time to pull them off because my engine was knocking. Turned out to be a piece of metal that got in the combustion chamber and lodged in the head. They literally had zero wear, maybe 2 hairline scratches on them. They were the original gm ones from 05. Made me believe that the S65 does have something wrong with it, S65s with 20k miles have more wear.
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12-08-2023, 08:59 AM | #2957 |
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2011 E93 06/2010 79k Miles
79k miles on my 2011 e93 m3. Had the work done at Boosted Bimmers in Melbourne Fl, who I highly recommend for anyone in the Orlando/ Space Coast area. The owner, Omar mentioned that bearings had wear through about the first three layers (out of eight) and looked good. Car never tracked, always warmed up, oil changes at 8k miles w/ Liqui Moly. He also mentioned one of his customers has a supercharged M3 with BE bearings with 300k miles..
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12-08-2023, 09:37 AM | #2958 | |
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Ps. Woah, is mentioned 300k miles correct or typo?? |
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DrFerry6748.00 |
12-08-2023, 05:59 PM | #2959 | |
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I'd like to know though how Omar knows there are 8 layers in them? Personally I thought their was much fewer, but I don't have anything solid on that on these particular 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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12-14-2023, 06:46 AM | #2960 |
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35k miles, car was well taken care of previously. Definitely did not need to do them this early, but opted to do so for peace of mind and since I was gonna have to do them at some point anyway. Replaced with BE Engineering bearings and ARP rod bolts
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12-16-2023, 01:54 PM | #2961 |
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2011 E90 30k miles
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DrFerry6748.00 Assimilator1615.50 |
12-18-2023, 01:23 PM | #2962 |
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2008 6MT at 81k miles.
They're not in any cylinder order, I received them as a bunch from the PO. Close ups of the worst ones and interesting edge wear. |
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12-18-2023, 02:31 PM | #2963 |
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It was definitely time. What brands of new bearings and bolts were they replaced with?
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12-19-2023, 12:07 AM | #2964 |
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12-19-2023, 03:24 PM | #2965 | ||
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Quote:
And the odd edge wear is quite typical of those too. ************************************************** * Quote:
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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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12-19-2023, 06:45 PM | #2966 |
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Mine at 50k miles, 2009
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DrFerry6748.00 Assimilator1615.50 |
01-25-2024, 05:32 AM | #2967 |
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2007 M3 - 150000 km .
Replaced with Mahle From left to right is 1 to 8 . |
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01-25-2024, 10:01 AM | #2968 |
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Thanks for posting. Looks like the shells were "way overdue" for replacement. Saved in the nick-of-time at 93K miles. With all that copper showing, and de-lamination wear beyond the copper, what did the crank journals look like?
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///M Power-Belgium68541.00 Assimilator1615.50 |
01-25-2024, 10:12 AM | #2969 |
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All are ok , and all measured 0.51 with the new bearings. I just want to say , i am not a "professional garage " . It is sоmething that i do in my spare time . Last edited by RSV Atelier; 01-25-2024 at 02:57 PM.. |
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01-27-2024, 11:16 PM | #2970 |
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2013 with 45600 miles. Replaced with ACL and ARP2000’s.
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