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      11-14-2018, 07:43 PM   #837
wfdeacon88
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Quote:
Originally Posted by Siajoon View Post
Quote:
Originally Posted by Helmsman View Post
Quote:
Originally Posted by Siajoon View Post
I would definitely say it's one of the better bearings I've seen but nonetheless I'm still happy I got it over with and stopped playing the guessing game.. you got yours done to right ?
Yep I did. 37k miles, similar shape or maybe better, hard to judge from pictures. Would have hold for plenty miles more Im sure but like you figured cheaper to do them too early than too late. Also interesting to confirm that current maintenance and useage style seems fine. On top bought the car with 11k on the clock so wasnt sure about previous treatment. All good now.
What shells and bolts did you end up using mate?
Yes, I forgot to mention that I purchased my car with around 50k miles and the previous owner supplied me with a Manila folder with mostly all the previous maintenance done and his oil changes were about 5-7500 tops. So from what I can tell is it was "well maintained" to a certain extent.


I went with what Malek recommended which was the Clevite Calico CT-1 Coated Extra Clearance Rod Bearing Set.

How about you?
Those are the VAC bearings, correct?
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      11-15-2018, 01:14 AM   #838
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Quote:
Originally Posted by Siajoon View Post
Yes, I forgot to mention that I purchased my car with around 50k miles and the previous owner supplied me with a Manila folder with mostly all the previous maintenance done and his oil changes were about 5-7500 tops. So from what I can tell is it was "well maintained" to a certain extent.


I went with what Malek recommended which was the Clevite Calico CT-1 Coated Extra Clearance Rod Bearing Set.

How about you?
Sounds good. Went with ACL Race/extra clearance and ARP 625 bolts.
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      11-15-2018, 09:58 AM   #839
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Originally Posted by Scharbag View Post
Sadly, "not bad for an M3" is more correct. In general, those bearings are totally unacceptable given the low mileage.
An interesting observation I made was a couple of the old upper bearing shell's breaking line was sticking out about 0.5 mm from the rod's breaking line upon opening up, while the lower counterparts were perfectly flushed. My understanding is that even if they weren't perfectly flushed during installation, upon tightening the lower half of the rod will push the upper half flushed and vice versa, I did one not so flushed, tighten and loosen and found it completely flushed.

So the fact that the upper shell started getting misaligned might be a sign that it's about to spun?
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      11-15-2018, 10:35 AM   #840
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Originally Posted by thongvua View Post
So the fact that the upper shell started getting misaligned might be a sign that it's about to spun?
Not necessarily. These are fractured rods. their separation lines are not always in the same spot, but since the bearings are always the same dimensions there may be some of the shell protruding past the parting line. Doesn't matter once they're assembled and it doesn't mean they started to spin.
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      11-15-2018, 11:13 PM   #841
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Hello

Sorry if it's posted already as I am sure it is some where. Can you guys recommend a brand of rod bearings to use if I decide to replace my OEM bearings? I am engine illiterate so I cannot determine why one brand would be better then the next. Please school me if you don't mind. I am reading that some bearing have more clearance so engine oil can get in there easier to lessen wear. Some aftermarket bearings are treated or coated to strenghten the bearing from stock. Anything else that would make one brand better than the other?

I have 08 with 45k miles and I just received my first oil analysis report where lead has increased by a significant amount from prior oil analysis reports.

The bearings on this thread are:

BE
ACL
WPC
VAC (Calico)

Which set do I buy??

I read it's suggested to replace the motor mounts as you replace the bearings. Can you recommend a brand?

Thanks

Last edited by wchow16; 11-16-2018 at 12:00 AM.
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      11-16-2018, 10:36 AM   #842
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Originally Posted by wchow16 View Post
Hello

Sorry if it's posted already as I am sure it is some where. Can you guys recommend a brand of rod bearings to use if I decide to replace my OEM bearings? I am engine illiterate so I cannot determine why one brand would be better then the next. Please school me if you don't mind. I am reading that some bearing have more clearance so engine oil can get in there easier to lessen wear. Some aftermarket bearings are treated or coated to strenghten the bearing from stock. Anything else that would make one brand better than the other?

I have 08 with 45k miles and I just received my first oil analysis report where lead has increased by a significant amount from prior oil analysis reports.

The bearings on this thread are:

BE
ACL
WPC
VAC (Calico)

Which set do I buy??

I read it's suggested to replace the motor mounts as you replace the bearings. Can you recommend a brand?

Thanks
This is a good read and should let you make your own informed decision.

http://wiki.rcollins.org/core/index....s#ACL_Bearings

Cheers,
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      11-16-2018, 06:34 PM   #843
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These were taken off my 2008 E93 at 68K miles before a supercharger install. I was the 2nd owner, bought the car with 24K miles on it and then driven it quite hard with several redlines every single day, 4 years of AutoX with dozens of schools and test-and-tune events some up to 4 hours behind the wheel during hot summer days. Used Motul 15w50 since about 30K with 6-7K oil changes, all sent to Black Stone. Tests constantly shown higher than usual metals, but it was consistent between each oil change so I did not get alarmed that much. Thought about replacing them as precaution when supercharger installed, apparently it was good timing. I'm sure they could survive for some more miles but I did not want to take chances.










Last edited by radiognome; 11-16-2018 at 06:41 PM.
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      11-17-2018, 12:07 AM   #844
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Quote:
Originally Posted by Scharbag View Post
This is a good read and should let you make your own informed decision.

http://wiki.rcollins.org/core/index....s#ACL_Bearings

Cheers,
Thank you.
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      11-27-2018, 09:09 AM   #845
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2008 E92 M3, Scandinavia, 98000KMs. BMW recommended service intervals & fluids. What about the crank in these cases? People just swap bearings and keep driving.. Is there not a risk of the crank being damaged, without having spun a bearing?
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      11-27-2018, 10:09 AM   #846
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Those don't look terrible- not as bad as most we've seen
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      11-27-2018, 10:54 AM   #847
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I am not an engine builder but donít think you have any reason to worry about crank damage based on those bearings.
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      11-27-2018, 03:38 PM   #848
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Tjena HH5k, like the guys say, plenty 08 shells taken out in worse condition without crank damage. What did you put in?
Where about are you? Sthlm here.
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      11-28-2018, 03:43 AM   #849
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Originally Posted by Helmsman View Post
Tjena HH5k, like the guys say, plenty 08 shells taken out in worse condition without crank damage. What did you put in?
Where about are you? Sthlm here.
Hei! Trondheim=) OE bolts and bearings went back in. Not my car yet. Am considering buying it. But I don't know for sure if the crank is OK. I've talked to a few different shops here, and the feedback is "Don't buy!" or "Don't worry!".

But sure, they don't look as bad as a lot of the other examples.. Just a lot worse than they should look in a fully serviced 100'km car. This is the first set of M3 bearings I've seen IRL, and I was quite disappointed to see that this is not all just car forum anxiety.. :/

Do you guys think that this issue is beeing reflected in the used car price? Or do you feel like that has yet to come?
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      11-28-2018, 04:26 AM   #850
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Quote:
Originally Posted by HH5k View Post
Hei! Trondheim=) OE bolts and bearings went back in. Not my car yet. Am considering buying it. But I don't know for sure if the crank is OK. I've talked to a few different shops here, and the feedback is "Don't buy!" or "Don't worry!".

But sure, they don't look as bad as a lot of the other examples.. Just a lot worse than they should look in a fully serviced 100'km car. This is the first set of M3 bearings I've seen IRL, and I was quite disappointed to see that this is not all just car forum anxiety.. :/

Do you guys think that this issue is beeing reflected in the used car price? Or do you feel like that has yet to come?
Stomp on it before engine is up on temps and the shells probably wear regardless of service intervall (i.e. keep track of current owner since bearing swop if you plan to buy..).

Again a lot of much worse examples as you can see on the board. Personally wouldnt worry but lets see what the engine guys has to say.

Regarding pricing at least over here, njae I dont think original shells at around say 100k km (which is where most 08s seem to be around) influence pricing in general. Main reason being that most 2nd hand buyers are not fully aware of the "issue". Anyhows its a 20-25KSEK fix "only" so not a major deal on a 300K car.
Personally I would prefer to buy an "un done" car and have it sorted with a shop of my choice and see how things look. Like you're doing now assuming quick buy.

Ps. It should have been possible to get a fair visual inspection of the crank during bearing swap?
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      11-28-2018, 05:23 AM   #851
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Those don't look terrible- not as bad as most we've seen
For a car with 100km those look horrific, the babbitt layer is quite worn and there are areas of copper visible.
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      11-28-2018, 05:48 AM   #852
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For a car with 100km those look horrific, the babbitt layer is quite worn and there are areas of copper visible.
Looked through the thread?
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      11-29-2018, 06:20 PM   #853
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Quote:
Originally Posted by HH5k View Post
Is there not a risk of the crank being damaged, without having spun a bearing?
Someone more knowledgeable than I can speak to this better, but I'm guessing that if you're crank was damaged, you'd exhibit some unpleasant signs, like rod knock, etc..

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Quote:
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For a car with 100km those look horrific, the babbitt layer is quite worn and there are areas of copper visible.
Looked through the thread?
I think it's important for us to distinguish whether we're judging rod bearing wear as good or bad from the point of view of e9x owners or from a generalized engine functionality perspective.

Are some photos of people's rod bearings posted in this thread less worn than others? Yes.

Are all of the bearings posted here worn significantly more than they should be or more than any other car of comparable mileage and usage. Also yes.
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      12-05-2018, 11:42 PM   #854
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How does this look? 2011.5 E92 M3, 61k miles on the car, ~20 track days since I've owned it.

This is the stock rod bearing AFAIK, replacing with BE bearings
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      12-06-2018, 11:26 AM   #855
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Not too shabby!
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      12-06-2018, 11:28 AM   #856
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Quote:
Originally Posted by SoCalRPM View Post
Quote:
Originally Posted by HH5k View Post
Is there not a risk of the crank being damaged, without having spun a bearing?
Someone more knowledgeable than I can speak to this better, but I'm guessing that if you're crank was damaged, you'd exhibit some unpleasant signs, like rod knock, etc..

Quote:
Originally Posted by Helmsman View Post
Quote:
Originally Posted by BigBoosting View Post
For a car with 100km those look horrific, the babbitt layer is quite worn and there are areas of copper visible.
Looked through the thread?
I think it's important for us to distinguish whether we're judging rod bearing wear as good or bad from the point of view of e9x owners or from a generalized engine functionality perspective.

Are some photos of people's rod bearings posted in this thread less worn than others? Yes.

Are all of the bearings posted here worn significantly more than they should be or more than any other car of comparable mileage and usage. Also yes.
Maybe.....
If you search rod bearings for STis or Porsches or other (performance) cars you will see some images that are "familiar"
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      12-08-2018, 07:36 PM   #857
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I don't want to stir up drama (yeah kinda hard to do talking about our rod bearings), but for the people who still want BMW to do something about this issue:
https://jalopnik.com/heres-how-to-po...car-1830938474
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      12-08-2018, 07:59 PM   #858
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Here are mine changed last week. 2009 DCT E90 with 99.7K miles. Replaced with BE Bearings just in time.

edit: attachments are not working now
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