11-03-2019, 02:28 PM | #1 |
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Con rod bearings anyone done them?
Has anyone replaced their con rod bearings on F10 M5.
Couldn't find any post with that, Are they as problematic as E60? |
11-04-2019, 01:45 AM | #2 |
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I've done mine. I don't think they are as problematic as the e60 but they certainly do have their issues. I started a few threads regarding the subject.
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11-04-2019, 01:13 PM | #3 |
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11-04-2019, 02:07 PM | #4 |
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Just had a look through. Turns out I didn't start a proper thread on this, just commented in other threads. The only 2 i started with regards to rod bearings were 1 where I shared the price of the parts and another where I queried a bearing manufacturer's reputation. I doubt either of these will be of any use to you.
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11-08-2019, 04:56 AM | #5 | |
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11-08-2019, 12:18 PM | #6 | |
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Rod bearings are appearing to be more of an issue as this platform gets older. Mine were absolutely perfect at 47k but it's been serviced around every 8k before I got it and every 3-5k miles during my ownership. It obviously goes on warm up cycles aswell, my car was obviously treated well by its previous owners, despite there being more than the average amount. I could do a write up but I'm unsure what to cover now at this point, feels meaningless without images to go with it. I can give advice and answer any questions people may have. I'm not an expert with this engine but rod bearings are rod bearings I guess. I did use plastigauge on every rod to check clearance during the process. I don't regret replacing mine even though there was nothing wrong with them. As more threads pop up with engines going bad I can relax knowing that mine are ok. Not saying something else won't go wrong though. Every service i fully inspect the oil filter and housing for debris/swarf and always good, next service is due very soon so hopefully this trend continues. |
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12-12-2019, 04:26 AM | #7 |
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Might be a good shout getting the bearings done around at around the 50k mark.
What sort of time did it take to do them and what cost?
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12-12-2019, 09:08 PM | #8 |
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Here's why my indy shop quoted:
Customer states: estimate to replace rod bearings 3,903.81 Labor Service - General Labor 2,990.00 New 10W60 BMW Motorsport Oil 10w60 10.00 12.95 129.50 New 11 42 7 583 220 Oil Filter Kit w/ O-Ring 1.00 23.65 23.65 New 8B1578HX ACL S63tu bearings 1.00 368.58 368.58 New 11 24 7 845 511 connecting rod bolt 16.00 9.89 158.24 New 11 31 7 690 476 oil return pipe o-ring (Jacksonville) 1.00 5.61 5.61 New 11 13 7 843 145 Oil Pan Gasket 1.00 29.48 29.48 New 07 12 9 905 558 Bolt TORX w/ Washer (1 day out) 2.00 1.31 2.62 New 07 12 9 909 333 Bolt M8x25-U1-8.8 (1 day out) 19.00 2.39 45.41 New 07 12 9 909 348 Bolt M8x45mm (1 day out) 6.00 2.36 14.16 New 11 13 7 843 149 Oil Pan Gasket 1.00 29.48 29.48 New 07 12 9 909 551 Oil Pan Bolt 22.00 2.72 59.84 New 11 12 1 304 174 Oil Pick-up Tube O-Ring 1.00 6.29 6.29 New 12 61 1 744 292 Oil Level sender O-ring 1.00 6.58 6.58 New 17 22 2 284 079 Oil Cooler Seal (1 day out) 2.00 4.19 8.38 New BMW COOLANT BMW Anti-Freeze/Coolant 1.00 25.99 25.99
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12-12-2019, 09:30 PM | #9 |
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Rod bearings have been somewhat of an issue on M motors since the late 90's w/ the e46 M3 and the S54 engines. It's crazy to me that they haven't gotten it right in nearly 30 years...which leads me to believe, it's not a mistake, or an error in engineering. It leads me to believe that maybe BMW thinks RB's should be replaced as a consumable item - or - these engines were designed to operate within a certain environment with minimal variability.
In addition to tight tolerances, I think maintenance, oil, and environment (closely related to oil) all play a key role here. Warm up your car properly to get the oil flowing, choose the right oil for your application; (in a colder climate, probably want to go w/ a lighter oil) I think if you do those things, from Day 1, and this is why maintenance records and frequent oil changes (every 5-7k, not 15k miles) are so important, your RB's should last a long time.
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12-13-2019, 02:18 AM | #10 |
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It took me around 10 hours, checking clearances on every bearing and a few coffee breaks. Total cost for me was around £380. That includes oil, oil filter, all necessary bolts and seals and obviously the bearings themselves. I opted for ACL bearings.
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12-19-2019, 07:14 AM | #11 | |
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Cheers to you for also being able to do your own bearings. It's a good feeling when it's done! |
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03-06-2020, 01:02 PM | #12 |
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Did this on my 06 e60 as "preventative"...once opened up...glad I opted to it. However, sold the e60 shortly thereafter #MissYouIndyRed
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