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04-23-2019, 03:20 PM | #1013 | |
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I've also heard from people I trust that the wider rod bearings available for S54s cause small but measurable power loss. I've recently wondered if BMW M was pushing the (lower) limit on rod bearing width in pursuit of compactness/weight/low friction, and maybe the reason for the extraordinarily tight clearances is to help keep the rod stable despite the relatively narrow bearings or something. But then again, the B7 RS4 has a worse rod/stroke ratio with a comparable redline and output, though it also has slightly lighter rods. Net-net, shouldn't that mean comparable load on the rod bearings? Yet that engine uses slightly narrower rod bearings than the S65.... Of course I don't know jack about this stuff, so I'd love to hear some informed commentary. |
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04-23-2019, 07:51 PM | #1014 |
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Well, a little late to post these. But here’s my set that got swapped with a set of ACL’s at Mporium a few weeks back
I’m in the camp of replacing rod bearings as cheap insurance compared to a new motor so I told myself I would get them done at close to 50k, and stuck to it. Went with ACL’s because BE’s were out of stock at the time and I have a crazy work schedule that doesn’t always allow me to drop off my daily-driver for several days at a time without planning in advance. Anyway, looking at the results were they the worst I’ve seen in this thread, no, but they’re not good either, so I’m glad I did Last edited by Kelse92; 04-23-2019 at 07:57 PM.. |
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04-23-2019, 11:39 PM | #1015 | |
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It honestly hurt to see this picture. |
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04-24-2019, 10:18 AM | #1016 |
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2009 E92 M3 purchased at 74,000 mi. I'm the second owner. Car felt like it was running perfectly, but I'm very glad I spent the money to get the job done.
https://photos.app.goo.gl/cgu9F55QZERnGExx9 https://photos.app.goo.gl/VenxUGEa4w31mAjH8 |
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kyrix1st2361.50 |
04-24-2019, 01:18 PM | #1017 |
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Removed from a 2011 E90 with 58k on the odometer. Oil changed regularly around 3-4k per intervals. Minor wear but overall nothing terrible.
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PACarGuy683.50 Assimilator1593.00 |
04-24-2019, 03:25 PM | #1018 |
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04-26-2019, 07:38 PM | #1019 |
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Rod bearings from 4/26/19!
Contact us to today to schedule your appointment! (800) 438-2808 or info@SSR-Performance.com |
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04-26-2019, 08:05 PM | #1020 |
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2008 78k miles
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04-26-2019, 08:28 PM | #1021 | |
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04-27-2019, 03:30 AM | #1022 |
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Drives: 2011 E93 M3
Join Date: Nov 2014
Location: DFW, Texas
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04-27-2019, 05:10 AM | #1023 |
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04-27-2019, 06:41 AM | #1024 |
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Drives: 2011 E93 M3
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04-27-2019, 08:58 AM | #1025 |
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04-27-2019, 01:33 PM | #1026 | |
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05-03-2019, 04:14 PM | #1027 |
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Just replaced my second M3's rod bearings at 115,000 kilometers (71,000 miles) with BE bearings and BE-ARP bolts.
Always 10w60, tracked, driven year round.
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2012 E92 M3 - Frozen Silver Previous: 2013 F10 M5 / 2011 E92 M3 / 2009 E92 328i |
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wfdeacon881105.00 |
05-05-2019, 05:58 AM | #1028 |
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The set just above the mains seemed to have two rod bearings with considerably more wear than the others. Was that the case or is it just lighting? Sorry I took another look and that was the set that seized. Must have been a busy week!
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05-10-2019, 05:59 PM | #1029 |
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Some more examples from this week!
Contact us to today to schedule your appointment! (800) 438-2808 or info@SSR-Performance.com 5/3/19 5/10/19 |
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05-14-2019, 09:01 PM | #1030 |
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Contact us to today to schedule your appointment!
(800) 438-2808 or info@SSR-Performance.com 5/14/19 |
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05-18-2019, 01:54 PM | #1031 |
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The 5/16/19 ones are crazy looking! Who knows how much longer that engine may have lasted. We saved this one and have saved hundreds of others. Don't let that one that doesn't make it be you. Give us a call to discuss your rod bearings plans today!
(800) 438-2808 or info@SSR-Performance.com 5/16/19 5/17/19 |
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05-18-2019, 04:06 PM | #1032 | |
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bottom bearings are the best I've seen... but who knows with these things... better safe than sorry. |
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05-21-2019, 11:57 AM | #1034 |
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