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05-01-2023, 11:14 AM | #1 |
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Blackstone report... bearings issue?
Hi all,
I ran a Blackstone report on my last oil change, and they came back with some worrying information, higher than average Copper and Lead values.. Car us just under 60k miles now. Should I be worried and plan for bearing swap? The oil I sent them had about 3 hours of track time and maybe 4000 miles all up (most likely under)... |
05-01-2023, 12:46 PM | #2 |
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I'm very outspoken about being against Blackstone reports. They do not provide any useful information.
Rod bearing failure is a 'catastrophic failure' and generally impossible to predict. Just get them replaced ASAP, be sure to use ARP bolts. I don't think the new ones are necessary. |
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TheMechanic127.50 |
05-01-2023, 01:35 PM | #3 | |
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05-01-2023, 02:29 PM | #4 |
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bearings usually last the life of an engine and in these they don't.
they're not a wear item, which is what an oil report tells in this instance. all it takes is a fraction of a second of oil starvation for it to melt to the crank journal. Oil reports are useful for other applications though. |
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05-01-2023, 02:35 PM | #5 |
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i get that, but that's not really answering my question. my point is that a good report doesn't clear the engine (in line with what you're saying), but does a "bad" report not mean that there's likely a bearing issue going on? trying to think of what other sources of lead and copper would be present in the oil?
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05-01-2023, 02:49 PM | #6 |
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Positive !
I would be very worried with such a Blackstone report . But with the S65/S85 bearings we never know ...
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05-01-2023, 03:47 PM | #8 |
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just do the damn bearings. That's the answer. No more speculating. Tow it if you must.
Not uploading my credentials but I'm a mechanic. I've rebuilt recip and turbine powerplants. edit: leaded fuel is a legitimate question if you used 110 octane $10/gal track fuel Last edited by chocstraw; 05-01-2023 at 04:20 PM.. |
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05-01-2023, 04:34 PM | #9 |
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Hi
Thanks for the feedback... I did look at the filter no particles. I never ran more than 4k on oil and used oem BMW. Now I have Motul 10w-60 in it... Never ever ran but 93 octane unleaded... since I got it (at 48k miles )... I have not tracked it since last year and its my wife's daily driver... (3 miles back and forth doh...) |
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05-01-2023, 04:42 PM | #10 | |
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Replace those RBs tho. |
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TheMechanic127.50 spammysammich1606.00 |
05-01-2023, 09:23 PM | #11 |
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I was told that it's wrong to make any decisions on a single report. Every engine is different and they have different levels of everything. So the idea is to start doing an oil analysis as soon as you get the car and compare reports with the previous ones. That way you can see what changes and can react. Of course it doesn't help if you are on a possible verge of the rod bearings failure. 60-75k that's when they recommend to replace them. Especially if you track the car.
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05-02-2023, 12:31 AM | #12 |
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Change the bearings before it's too late. I changed mine at your mileage and they came out bad. Crank was safe.
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TheMechanic127.50 DrFerry6731.50 |
05-05-2023, 12:15 AM | #13 |
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I think I will "follow up" like they said with another report in 1000 miles, and then stop driving it until I get the result... IF wear slows down after the recent Motul oil change and no track time (just wife driving her and occasional redline on freeway by me hehe) I might postpone bearing change. If lead and copper still high, I'll take her in..
Does this sound like a good plan? Thanks! |
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05-05-2023, 12:21 AM | #14 |
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This car is something I dreamed for many years when I could not afford one... It holds a special place in my heart. I owned a 99 M3, 2002 M3, 2008 M5.. and this. This seems to stick more for some reason with us, my wife loves it also I think they aged really well
I also owned a couple of 335i's , still have a 335xi with new turbos (did it myself, and still have the scars to show) ... but NOTHING compares to 8000 rpm + V8 NA engines |
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05-08-2023, 12:48 AM | #15 |
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bad plan but you don't wanna listen. just change the bearings.
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05-08-2023, 08:44 AM | #16 |
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^ this. these engines have a reputation (deserved or otherwise). you're getting as close as you're gonna get to a "maybe something's happening."
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05-08-2023, 09:33 AM | #17 | |
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05-08-2023, 10:04 AM | #18 | |
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05-09-2023, 09:17 AM | #19 |
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So how complex and sophisticated is a rod bearing swap in the S65 engine?
I’m the original owner of a 2011 E90. 68,000 uneventful miles thus far. Only significant engine work has been replacement of the throttle actuators in 2016. I no longer use the local BMW dealership for service. I have an independent mechanic who’s been good and reliable, but when I brought up the RB issue, I sensed a little bit of hesitation when I asked how comfortable he’d be performing the elective swap. He replaced the throttle actuators and has a lot of experience in the field so maybe I’m reading into it… If I moved ahead with replacement, just curious how much “homework“ I need to do before selecting a mechanic for this specific job. I am not a DIYer, so apologies if this comes across as naïve. I live in central Illinois.
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05-09-2023, 09:20 AM | #20 |
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There is a good DIY you can search for to understand what is involved. Patience and care and attention to detail are critical. A first timer on this car will take longer than someone who has done 2 or more. I did them myself in 2014.
Last edited by pbonsalb; 05-09-2023 at 10:53 AM.. |
05-09-2023, 09:56 AM | #21 | |
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Recent Past '12 E92 M3 ZCP, '08 E93 M3, '18 F80 ZCP, '04 E46 M3 I think I have an M3 problem. |
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05-09-2023, 07:38 PM | #22 | |
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