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      06-15-2018, 07:38 PM   #727
jcolley
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It still bugs me when the cylinders are labeled wrong.
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      06-17-2018, 08:27 PM   #728
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2011 E90 M3 with 99,010 miles.

Purchased the car with 78,xxx miles as the third owner.

Left are bottom, right are top.

Replaced with VAC bearings if anyone is curious.

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      06-17-2018, 08:44 PM   #729
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Quote:
Originally Posted by _david View Post
EU guy here, 3rd owner, just bought it and did the service to be able to sleep at night, 2012 with 168000 km (104k miles). Oil changed at roughly each 20000 km (12k miles).

Ignore the scratches, they were all sitting together in a plastic bag while I drove home.
With your 104K miles on it , your bearings actually look pretty good
Interesting to see your 12K miles oil change intervals , while your bearings look pretty decent !
I'm pretty sure . A bearing replacement was not necessary in your situation.
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      06-17-2018, 09:19 PM   #730
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Quote:
Originally Posted by ch4rz View Post
2011 E90 M3 with 99,010 miles.

Purchased the car with 78,xxx miles as the third owner.

Left are bottom, right are top.

Replaced with VAC bearings if anyone is curious.

One aspect of the wear patterns that puzzles me is that some engines show uniform wear across the cylinders while others show non uniform wear. Is this indicative of rod deflection or other alignment issues?

Only a few posts on people who have replaced bearings more than once on the same motor. The few that I can recall said replacements looked very good. However they didn't compare the multiple sets.
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      06-22-2018, 12:32 PM   #731
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2008 e90 M3
seller had oil tested in Sept/Oct 2017 at 54,050 miles
lab said "great report"

i bought the car in May 2018 with 57514 miles
replaced rod bearings at 58,692 miles this week
with BE bearings and ARP bolts


and this is the condition the rod bearings were in
(they're not in any particular order)
i wanted to do it as insurance and for peace for mind
now i'm really glad that i did it
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Last edited by XKxRome0ox; 06-22-2018 at 01:13 PM.
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      06-22-2018, 12:54 PM   #732
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Quote:
Originally Posted by drrust View Post
One aspect of the wear patterns that puzzles me is that some engines show uniform wear across the cylinders while others show non uniform wear. Is this indicative of rod deflection or other alignment issues?
Not a big deal... All it might indicate would be slight differences between cylinders. Journal diameters, final rod bore shape (distortion) or size, or even ring sealing quality might influence the degree of wear over the life of the bearings.
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      06-29-2018, 05:20 AM   #733
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Late 2009 E92 M3 110,000km (68,000 Miles)

Replaced with BE bearings

Note: didn't keep track of order, so they are separated by tops and bottoms but not cylinder
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      06-29-2018, 07:37 AM   #734
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Quote:
Originally Posted by bosse92m3 View Post
Late 2009 E92 M3 110,000km (68,000 Miles)

Replaced with BE bearings

Note: didn't keep track of order, so they are separated by tops and bottoms but not cylinder
Hi Bosse, your name seem Swedish, where about are you located mate? (not by lake Victoria I assume..)

Cheers
Nik
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      07-01-2018, 05:56 AM   #735
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Quote:
Originally Posted by Helmsman View Post
Quote:
Originally Posted by bosse92m3 View Post
Late 2009 E92 M3 110,000km (68,000 Miles)

Replaced with BE bearings

Note: didn't keep track of order, so they are separated by tops and bottoms but not cylinder
Hi Bosse, your name seem Swedish, where about are you located mate? (not by lake Victoria I assume..)

Cheers
Nik
Hi mate, I m located in Victoria Australia not Sweden haha
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      07-05-2018, 12:41 AM   #736
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Sorry for the cross-post, as I had also done this on the main forum...but thought I'd share here on the RB thread:

Quote:
Originally Posted by kimiraikkonen View Post
Getting my RBs done today....@~118K mile

Will share details on the results and experience after.
Here's what 088/089 rod bearings look like at 118K miles. Definitely wear through the lead layer but I think expected for the mileage. Particle streak on cylinder 8 not good, however.

See below for my blackstone. Bought the car (am 2nd owner) at 82K mi. Did the first oil change and lead showed high (26ppm) and got the usual from Blackstone (did you use fuel booster, etc). Of course having bought it used, had no idea. In any event, as you can see from the Blackstone, the lead dropped down to lower levels and Copper has been relatively low all the time. The spike in nickel I saw a few oil changes ago, am wondering if this was the nickel dam on the bearings (5 mil nickel layer sandwiched between the lead and copper layer). Can anyone confirm of 088/089 have the Clevite nickel dam?
Our line of Clevite® heavy duty engine bearings includes rod, main, and cam bearings. All but our cam bearings are made with the legendary Clevite® TriMetal™ CL-112 material. Clevite® cam bearings are precision bored to eliminate the need for machining after installation. This exclusive bearing design features a steel backing for support, a cast-copper lead alloy center for strength and durability, nickel dam for chemical stability, and an electroplated white metal babbitt overlay for slipperiness, conformability and embedability. The intermediate cast-copper lead layer creates and interlocked columnar structure capable of withstanding much heavier pulsating loads than any other bearing design.
https://www.mahle-aftermarket.com/na...gine-bearings/
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      07-05-2018, 10:22 AM   #737
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Couldnt wait

Checking in 2008 e92 with 58k miles and original owner. Never tracked or abused. The lowers have a very weird signs of wear (on the left) and uppers (right) were in serious condition.

Got them done along with engine mounts at EuroMpire in NC.

Feeling relieved I took the plunge.







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      07-05-2018, 03:02 PM   #738
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Got my ACL HX Trimetal Race RB's and new OEM bolts installed, sorry didn't get the original shells labelled...

Only one had a very slight hint of copper showing on the edge (tried to show it in the angled photo), all I know is that came out of Cylinder #7.

102k KMs/63k Miles.


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      07-06-2018, 06:40 AM   #739
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2008 e90 with 78k miles replaced with BE's in May 2018 by German Motorworks in Nashville, TN. Great shop by the way!

Mine had some unusual wear on the bottoms in particular.

I'm also adding pics of my stock mounts which were starting to separate that were replaced at the same time.

I am the 2nd owner and had just bought the car and parked it until I got this done a week later. Glad I did it! Thank you to everyone on the forum who have brought this very real issue to light.
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Last edited by zstreet86; 07-06-2018 at 06:54 AM.
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      07-06-2018, 07:23 AM   #740
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Quote:
Originally Posted by zstreet86 View Post
2008 e90 with 78k miles replaced with BE's in May 2018 by German Motorworks in Nashville, TN. Great shop by the way!

Mine had some unusual wear on the bottoms in particular.

I'm also adding pics of my stock mounts which were starting to separate that were replaced at the same time.

I am the 2nd owner and had just bought the car and parked it until I got this done a week later. Glad I did it! Thank you to everyone on the forum who have brought this very real issue to light.
Yeah that was strange mate, you would have thought the top/bottoms where mixed up at some point. Anyhow, now its done!
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      07-13-2018, 01:58 PM   #741
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Just had mine done @ Bimmer Performance Center in Raleigh. 2008 E90 with 75k miles. Had the mounts done at the same time. Replaced w/ BE bearings. Glad to be done with it. I know it's all in my head, but the peace of mind now when I'm driving it is loads better.

EDIT - Just got the Blackstone report back - added in case anyone's interested.
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Last edited by sv848evo; 08-01-2018 at 10:05 AM.
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      07-13-2018, 02:27 PM   #742
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Quote:
Originally Posted by sv848evo View Post
Just had mine done.....Glad to be done with it. I know it's all in my head, but the peace of mind now when I'm driving it is loads better.
Not sure you're being fair to yourself when saying it was all in your head. That one bearing could have gone at any moment and that engine mount is beyond toast!
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      07-13-2018, 02:36 PM   #743
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2012 44K Miles.
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      07-17-2018, 06:39 PM   #744
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2011.75
41k miles

Anyone with more knowledge than I possess on bearings want to analyze?

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      07-20-2018, 04:43 PM   #745
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So finally done!
2011.5. 38k miles. 5k 10W60 change. Crazy careful with warm up since I bought it at 11.5k miles. Seemed to be very well looked after also at that point but who knows.

Shells as hoped for, no crazy wear, would probably been fine for plenty more miles but wanted to have it done/limit risk so very happy. Shop guessed the spots is coming from long stand still which was the case before I bought it. I DD since 4.5 years.

Replaced with ACL Race bearings (HX, increased clearance) and ARP 625s.
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      07-20-2018, 05:17 PM   #746
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Quote:
Originally Posted by Helmsman View Post
So finally done!
2011.5. 38k miles. 5k 10W60 change. Crazy careful with warm up since I bought it at 11.5k miles. Seemed to be very well looked after also at that point but who knows.

Shells as hoped for, no crazy wear, would probably been fine for plenty more miles but wanted to have it done/limit risk so very happy. Shop guessed the spots is coming from long stand still which was the case before I bought it. I DD since 4.5 years.

Replaced with ACL Race bearings (HX, increased clearance) and ARP 625s.
Man, these look good! I had my replaced at the same mileage and they were much worse. Car was supercharged for about 4k miles and I have no idea about previous owners warmup care, etc. Oil intervals were about 6-7k miles.
Good to know that with proper care even oem bearings are good for probably at least 50-60k.
Which brand oil did you use?
Here are mine for comparison.
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      07-20-2018, 05:33 PM   #747
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Quote:
Originally Posted by Helmsman View Post
So finally done!
2011.5. 38k miles. 5k 10W60 change. Crazy careful with warm up since I bought it at 11.5k miles. Seemed to be very well looked after also at that point but who knows.

Shells as hoped for, no crazy wear, would probably been fine for plenty more miles but wanted to have it done/limit risk so very happy. Shop guessed the spots is coming from long stand still which was the case before I bought it. I DD since 4.5 years.

Replaced with ACL Race bearings (HX, increased clearance) and ARP 625s.
Nik , actually your bearings look really good. It's nice to see a bearing replacement , done in Europe !
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      07-20-2018, 05:43 PM   #748
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Quote:
Originally Posted by ///M Power-Belgium View Post
Nik , actually your bearings look really good. It's nice to see a bearing replacement , done in Europe !
Yeah, following plan made two years ago.... Proper shop and nice experience. They certainly did this before, had a few tricks to minimize work and was down to the details. Very reasonable price of 19.5k SEK (~2k €) on top.

Thought it was BS but the engine actually sound smoother, less tickelitack. The one thing that bugs me is that it all of a sudden seemed to drink some oil which it never done before. Added a separate thread on that (https://www.m3post.com/forums/showthread.php?t=1517678).

Ps. Strokey, been using Castrol and Shell lately. All 10W60.
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