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02-13-2020, 02:34 AM | #1497 |
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DCT M3 102K
My car was about to die . swapped them with be bearing with apr bolts |
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02-13-2020, 08:06 AM | #1498 | |
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That is a lot of copper showing for sure!!
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2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies... |
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02-13-2020, 01:45 PM | #1499 |
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Wow! You definitely dodged a bullet there!
What made you decide to change them? Oil report? New owner & decided it was a good idea? Funny noises? Btw, welcome to the forum |
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02-14-2020, 12:55 AM | #1500 |
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Recently picked up my 4th E92 M3, this time with higher mileage but it was looked after by PO. Took it to deansbimmer MPORIUM for RB service, here is the result:
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deansbimmer3748.50 Assimilator1588.50 |
02-14-2020, 06:36 AM | #1501 |
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Interesting, I recall seeing similar wear patterns on higher milage cars. I haven't visually inspected them but I did see some uneven surfaces on a few of the lower bearings.
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02-15-2020, 10:14 AM | #1502 |
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russiamutha
Not bad those shells for a 99k S65. Going back to this point, as I don't think it was answered. I'm getting mixed info on this, on the one hand I'm hearing it'll give you a decent ball park figure, & yet other people are saying it's pointless. I shall be replacing the bearings on my M3 within the next 2 months, should I bother with plastigauges? Last edited by Assimilator1; 02-15-2020 at 10:20 AM.. |
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02-15-2020, 10:43 AM | #1503 | |
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Pointless because there's not much you can do unless you remove your crankshaft to get journals polished or a replacement bearings set. Depends whether you trust your bearing manufacturer to get your clearances right. But what harm could it do other than providing you with more information to make an informed choice? |
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02-15-2020, 11:24 AM | #1504 |
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Good to hear , have you used & compared plastigauges to other ways of measuring?
Not entirely pointless for me, I think lol. I have a micrometer (hopefully good enough!) & I intend to measure the shells as per Deansbimmer recommendations. I figure if I find a bearing with noticeably tight clearances (via plastigauges) I could put the skinniest shells with the fattest journal , oh & hope that'll be enough, otherwise, like you said, without more drastic work I'm stuck with what I've got. Deansbimmer Regarding measuring shells, my metric micrometer goes down to 2 decimal places (0.xx incase I've described it wrong), will that be enough to measure shells accurately? |
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02-15-2020, 11:47 AM | #1505 | |
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But as has been said, unless you disassemble your engine, plastigauge is your only choice to confirm nothing is really wrong.
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02-15-2020, 03:20 PM | #1506 | |
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02-16-2020, 06:15 AM | #1507 | |
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You can pretty accurate measurements from plastigauge, but a tool is only good as the person behind it. Last edited by Charlievee; 02-16-2020 at 06:49 AM.. |
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02-16-2020, 06:48 AM | #1508 |
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I would not worry if the shells are verified by you or the seller, the motor has not suffered a spun bearing or rod knock or locked up such that you are changing bearings as preventative maintenance, and you find no surprises when doing the job that suggest the crank could be damaged or out of spec (and if it was out of spec enough, you would be in the first category of spun bearing, rod knock or lock up).
We are not building an engine. Just changing a part. If the engine is fine and the part within spec, you can just install it. I am not going to pull my motor and disassemble the bottom end just because the bearings have wear. However, I might pull the motor and disassemble the bottom end to change the main bearings preventatively if I decide I need a project sometime (I changed the rod bearings myself in 2014, but that was only 42k miles ago and the car has only 102k total so I am not sure when I will prioritize that project). |
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02-16-2020, 10:16 AM | #1509 |
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Ok thanks guys, think I'll stick to plastigauge to make sure clearances are in range.
I'll look into to getting a new micrometer to measure the shells & keep the variance from them to a minimum, & to put the thickest shells on top (assuming I don't buy a pre-mixed, measured & marked set from someone). (further input still welcomed btw ). |
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02-18-2020, 09:26 AM | #1510 | |
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02-18-2020, 09:28 AM | #1511 | ||
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02-19-2020, 08:22 PM | #1512 |
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2011.75 E90 ZCP 6MT @ 75K Miles
Hi all,
Glad to offer my first contribution to the thread. My car is a 2011.75, and swapping for BE Bearings and ARP bolts at 75K miles is just part of the regular maintenance schedule, as far as I'm concerned. I also had them swap in new OEM motor mounts as preventative maintenance while they were in there, and have definitely noticed less NVH afterwards. The stock ones were not leaking yet but were pretty much finished. Thanks to Eurowise in Charlotte, for doing a great job! I feel like the pic shows that I'm doing the right thing with my easy warm-up, low-rev routine and 5K changes with Liqui-Moly Synthetic 10W-60. At last analysis for these bearings, Blackstone had reported: "This is the least amount of metal to come out of this engine so far. There's just 2 ppm aluminum, and iron is in great shape at 9 ppm. Your BMW is wearing well for the type, and shows no signs of poor bearing wear, or any other issues for that matter. Insolubles tested at just a trace level, so oil filtration is working well, and there's no contamination in the sample. You're taking great care of this M3!". Future Blackstone reports will establish a new bearing material baseline for this S65, but that's two oil changes away because I plan the first change to occur at just 2K miles so we can cut open the filter to check for anything unusual. |
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0-60Motorsports792.00 Assimilator1588.50 |
02-19-2020, 11:27 PM | #1513 | |
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02-20-2020, 01:12 AM | #1514 | |
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02-21-2020, 03:11 PM | #1515 |
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Bearing Change Finally!
2010 E92 M3 85k miles - 6 track days OEM bearings were 088/089 Put in BE Bearings and ARP bolts. Last edited by Dean__Sanchez; 02-21-2020 at 05:21 PM.. |
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02-22-2020, 01:41 PM | #1516 |
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. Work done by Zolti at Auto Talent, a BMW/Porsche shop in Gardena, California. BE bearings, BE/ARP connecting rod bolts. . . . .
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Can 2008 Porsche 997 Turbo - Manual with Bilstein Damptronic Coilover Discussion Here, Custom Tuned ECU, Cargraphic Exhaust 2011.75 BMW M3 - DCT with Ohlins Coilover - Ohlins Settings & Impression Here |
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02-24-2020, 04:34 PM | #1517 |
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02-25-2020, 04:18 PM | #1518 |
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2010 M3 removed at 105k
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