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10-31-2017, 11:41 PM | #177 | |
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If its copper or lead its easy to tell. |
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11-02-2017, 12:09 AM | #179 |
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11-08-2017, 03:20 PM | #180 |
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3/2008 build 6MT E90 with 102,400 miles. First few changes were 10w60 at 7500 intervals (through warranty basically) then switched at 58000 to 0w40 and 5w40 oils on a shorter interval, 6k ish.
The car has been on track and did two and a half seasons of relatively heavy autocross. Most of the autocrossing happened between 30k and 50k, track stuff was scattered around. Drive it hard enough that I wore out the DSC off button at 68,000 miles, but also sees a lot of regular commuting and highway miles. Driven year-round except when there is salt on the ground, usually started in the morning in climate-controlled garage but starting conditions for the drive home are all up to the weather. STL ranges from 0 degrees to infinity degrees Blackstone was ~6-8ppm lead until 6,000 mile change with 6500 on the oil, popped up to 20ppm. Changed again 4500 miles later, 21ppm. No change in copper on the analysis, copper always around 2ppm. Replaced with BE/ARP at 102,400 miles. Did not DIY, rolled the dice with a shop who had done it before and glad I did I 'd still be taking it apart right now. Not the worst in the thread by a long shot, but it's amazing the difference in drag on a fingernail between the tin (wait am I are dumb is this nickel between lead and copper?) and lead. Some were juuuuust starting to show some copper color at the most worn center of the wear spot. And it's doubly amazing how much copper is showing around the part lines on the uppers(? 713x stamps are uppers right?). Gah.
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11-09-2017, 08:02 AM | #181 | |
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Drives: '08 M3, '09 328xi Sport Wagon
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Glad to see you got yours swapped!
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11-09-2017, 09:00 AM | #182 | |
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What we don’t know is if it helped or not. We don’t know that there was no benefit. No way to tell. Maybe we’re saying the same thing but i think it’s disingenuous to conclude no benefit where nothing conclusive is found On a sortof unrelated note i forgot how much longer it seems to take the TWS to warm up. Holy hell. Still planning to use it for first couple changes so i can get a somewhat apples to apples comparison with the brand new motor’s reports Last edited by Richbot; 11-09-2017 at 09:26 AM.. |
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11-09-2017, 10:36 AM | #183 |
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Plus, we have no idea how much of the wear occurred with 10W60 and how much with 0W40 or 5W40. Some theorize the wear occurs early and then pretty much stops since the wear has then added the necessary clearance. I don't necessarily agree with that either, but it's one of several theories.
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11-09-2017, 12:30 PM | #184 | |
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11-11-2017, 09:32 PM | #185 |
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11-11-2017, 10:11 PM | #186 |
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Maybe the initial wear happened by 3k miles with a little more at 5k and it was pretty much done by 7k. We really don't know. It's a theory. I changed my bearings at 60k and no longer worry, but I'll do them again around 120k.
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11-12-2017, 01:23 PM | #187 |
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Hi team - below are shots of my rod bearings removed after 39k miles, 2008 E92 M3. I can see copper showing on #8, and some strange scratches / pits on #4. My Blackstone reports jumped from 3 to 12 to 30 (ppm lead) this year. How close did i come to bearing failure? Thanks all!
Second owner, purchased 7/2014 @ 11,000 miles Always use stock oil every 7500 miles About 10 road track days and 2 car control clinics
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2008 SSII E92 M3 | LCI CIC, Apps, Tails| MPE | BBS Ch-R
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11-12-2017, 01:37 PM | #188 | |
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Note: Scratches are caused by lack of lubrication and contamination in your oil.
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11-12-2017, 02:27 PM | #189 | |
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11-12-2017, 02:59 PM | #190 |
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11-12-2017, 03:18 PM | #191 |
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Here are my bearing results (will update photo to show all 8 sets once complete):
Car info: 2011 E92 M3 6MT ZCP Dinan tune (8600 RPM redline - PO said he enjoyed it often) Dinan: 4:10 diff, exhaust, intake, throttle bodies, under drive pulley 31,400 KM (19,511 miles - 27,400KM PO) Never tracked or winter driven Oil changed every 5000KM to 8000KM (10W60 TWS) Replacement parts used: BE standard with BE ARP bolts (green plastigauge showed just less than 0.002" clearance when installed) First off, the internals of the engine look immaculate (cleanest used engine I have ever worked on): Factory bearings were 088/089 type: Here are the bearings. Top right is #1, top left is #5. Bottom shells are on the left: These are pretty clean bearings for an S65 I think (scratches on 4 and 6 are from my fingernails when removing the shell - oops). But that should be expected with only 20K miles on the clock. Well, really, no wear should be evident at 20K miles... The top shell from #2 had some strange streaks but I think it is just manufacturing variance as you cannot feel it at all. When disassembling, it seemed that #3 took less torque to loosen the factory hardware. Not a fan of the factory hardware, too many chances to mess up. Cheers,
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2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies... Last edited by Scharbag; 11-17-2017 at 07:58 PM.. |
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11-12-2017, 03:36 PM | #192 | |
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For the moment my car is already stored for the coming winter in Belgium. Once warmed up , she runs very smooth and for the moment I don't fear bearing failure . At least I hope so..because the blown engine thread shows it otherwise ! When the day comes that a bearing replacement is required , I will let the job done only by a S65 bearing specialist in Germany . His name is Mork (Fahrzeugtechnik Mork in Rockenhausen) and he is ///M specialist => https://www.der-bmw-spezialist.de/m-...mw-m3-e90-s65/ His price for the job looks good as well.. Mork is like Malek in the US . They did the S65 bearing job probably 100 + times . And that is what I call knowledge ! I believe (I'm pretty sure) that for a bearing replacement serious S65 knowledge is required ! I trust zero BMW/Dealers , because like usual they screw up... I still cannot believe that a bearing replacement is a DIY on Bimmerpost .
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11-12-2017, 03:51 PM | #193 | |
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It's nice to see , S65 bearings with less of wear ..
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11-13-2017, 01:37 AM | #194 | |
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11-13-2017, 04:56 AM | #195 |
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Yes Nik ,and they measure up the crank as well .
Sealings , new bearings , bolts ,oil filter, and oil change included with Castrol 10W60. Actually the price is really cheap..
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11-13-2017, 02:55 PM | #196 | |
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Edit: they measure the crank while in? RB job is about half price of the 25KSEK I got indicated over here which still thought was doable. |
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11-13-2017, 03:27 PM | #197 |
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Another example.
2009 w/67k miles Owner purchased it recently so unknown OCI or how it was used. It was a Northeast car before it came to FL. They seemed to be on the better side wear wise, but clearly still more wear than expected, the wear spots were noticeably rougher over the worn spots. Motor is soon to be supercharged so hopefully the mains hold up for a long while.
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11-13-2017, 05:15 PM | #198 | |
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I have no idea how they measure the crank . I heard also they are very busy . And it can take months before you can get an appointment .
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