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01-14-2023, 11:21 AM | #1 |
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Blown Engine
I am in Savannah GA. My 2011 M3 42k engine seized. Copper in the oil. Not sure how bad yet. May need a full rebuild. So I am looking for a place on East coast to rebuild engine or sells rebuild engines. Worst case a top machine shop to do the machine work if we can save the motor. Recommendation?
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01-14-2023, 04:21 PM | #2 |
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Sorry to hear your S65 motor is seized up. I have personal experience with the business at the first link below. I think the other two are worth calling as well. If the crank is damaged a new one will need to be sourced. Could always get a 4.2L or 4.4L stroker from Carbahn too. Let us know what direction you decide to go in.
https://trueautomotive.com/lawrenceville/ https://buckhead-imports.com/bmw-engine-repairs/ https://www.ebay.com/itm/22260224395...mis&media=MORE
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///M Power-Belgium63391.00 |
01-14-2023, 05:45 PM | #3 |
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I had True Automotive in Lawrenceville do rod bearings and a few other items on my wife's E93 convertible. I was very impressed with the facility and the staff. You may come out ahead financially by purchasing a used engine and having the main and rod bearings replaced before having it installed. I would talk with True Automotive and find out their recommendations. I only know one mechanic in Savannah (RMS Automotive) I would trust with her car, but he's a one man band and I wouldn't throw a big job like this at him. I did have him swap out the plastic Vanos covers for the aluminum replacements.
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DrFerry6728.50 |
01-17-2023, 01:48 PM | #6 |
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Seized engines from later year M3s are likely main bearing failure. Unfortunately, that trashes the block.
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tdott3942.50 |
01-17-2023, 02:00 PM | #7 | |
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Quote:
We would be interested to know what happened to your old engine if you have it stripped down.
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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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DrFerry6728.50 |
01-17-2023, 02:31 PM | #8 |
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What’s your source here?
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01-17-2023, 02:52 PM | #9 |
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There's a theory that 2011 MY's are more susceptible to main bearing failures, I heard from a couple different people now.
Myself included, I had an 11.75 E90 that seized #1 main bearing. Block was scrap, since no one makes oversized mains. |
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01-17-2023, 03:03 PM | #10 | |
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Purely anecdotal. If mains have a tolerance problem you’re likely SOL.
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Robocop30512.00 dar2008302.50 |
01-17-2023, 03:59 PM | #11 |
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Would need to read more about the theory. Might just be old news about the change in bearing material due to EU lead rules that went into effect sometime in 2011. General consensus is that clearance is at the very tight end of the range for all production years. There are alternative theories like abusive owners, too thick oil, sulphur in the gas, but support for any of them seems limited.
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Robocop30512.00 |
01-17-2023, 04:09 PM | #12 | |
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I can tell you that my 2011 had a main failure. As a general rule, any time someone says their engine "seized," I figure it's probably a main. The engine just quietly locks up hard with little to no noise, no warning, and no obvious issues other than a heck of a lot of glitter in the oil. Rod bearing failure usually has different symptoms. You know, knocking and / or a window in the block. Rod bearings don't usually fail quietly.
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01-17-2023, 08:38 PM | #13 |
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I think all model years have the same Main bearing. The only bearing that changed were the rod bearings. I never heard anything else.
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01-18-2023, 10:11 AM | #14 |
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You are wrong.
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01-18-2023, 10:49 AM | #15 | |
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I know of two cars that got engines from there in the last year, can't say much about long term reliability yet, other than they are still running last I heard.
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Robocop30512.00 |
01-18-2023, 10:52 AM | #16 | |
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The material of the main bearings also changed. The reason was to remove lead/copper to meet EU regulations.
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Last edited by tdott; 01-18-2023 at 04:06 PM.. |
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01-18-2023, 11:18 AM | #18 |
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So what's the deal, BMW decided to improve the engine and failed at it? I always thought the early MYs were plagued by rod bearing issues, which were at least partially mitigated by BMW in the late MYs. Does not sound like that's the case. I wonder if I am on borrowed time with 52K miles on 08 MY.
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DrFerry6728.50 |
01-18-2023, 11:31 AM | #19 |
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There is no more or less likely rod or main failure based on model year. It’s a clearance issue that agnostic of year or material. BMW didn’t change clearances when they changed material. They did not acknowledge any clearance issue.
Main failure is rare. Rod failure is much more common albeit still rare as a percentage of total engines. Most bearing changes show abnormal wear on the shells upon changing.
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DrFerry6728.50 Robocop30512.00 |
01-18-2023, 12:54 PM | #20 | |
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It's not surprising that main #1 is vulnerable. Look at how unbelievably long the crank snout is in the attached picture. There's a hell of a lot of distance between the crank pulley at the end and the #1 main behind the FOUR ROWS of chains and oil pump gear. Unfortunately, there's not really enough data to conclusively make a statement. The data that I've seen, largely by adding up forum anecdata, is suggestive though.
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DrFerry6728.50 Assimilator1594.00 |
01-23-2023, 03:37 PM | #22 | |
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But looking at all the photos of the lead/copper bearings vs the tin/alu/copper, the lead copper ones on average look much worse (e.g most showing at least some copper), I've yet to see any tin/alu/copper ones worn to copper (bar the one I rubbed down! lol). That doesn't seem to have stopped the engines failing, but their seems to be less of them failing vs the lead/copper engines, at least going by our limited 'database' in the blown engines registry.
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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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