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      10-27-2016, 09:06 AM   #23
Chris_08_M3
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I would be interested
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      10-27-2016, 09:35 AM   #24
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Who's in for a group buy?
I would actually be interested.
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      10-27-2016, 09:45 AM   #25
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I don't think you guys will get enough people together for a group buy.

Either way, you'll have a slightly large pill to swallow because of the Canadian Dollar.

VAC helped me out a little bit on price, but I still ended up spending about $2000 on parts to do it myself.
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      10-27-2016, 07:09 PM   #26
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Who's in for a group buy?
I would actually be interested.
Count me in.
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      10-27-2016, 07:50 PM   #27
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      10-27-2016, 10:37 PM   #28
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Rod bearing replacement

So BMW changed the rod bearings sometime in 2011, but nobody can tell me if my car has the new or old bearings. I sent my last oil change to Blackstone, and there was 0 lead in the sample at just shy of 9,000 KM. There were traces of aluminium. Blackstone hypothesised that I am on the new bearings due to the lack of traces of lead. I just want to be sure so I can calculate the additional costs to get my bearings done prior to a supercharger.
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      10-28-2016, 09:29 AM   #29
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Originally Posted by Jbedford View Post
So BMW changed the rod bearings sometime in 2011, but nobody can tell me if my car has the new or old bearings. I sent my last oil change to Blackstone, and there was 0 lead in the sample at just shy of 9,000 KM. There were traces of aluminium. Blackstone hypothesised that I am on the new bearings due to the lack of traces of lead. I just want to be sure so I can calculate the additional costs to get my bearings done prior to a supercharger.
What is your production date? Mine was 7/19/2011 hopefully I have the new rod bearing.
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      10-28-2016, 09:42 AM   #30
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What is your production date? Mine was 7/19/2011 hopefully I have the new rod bearing.
FYI, the newer bearings have the same tolerance and are not a fix at all. Exact same issues as the earlier bearings.

They are actually much harder.
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      10-28-2016, 09:45 AM   #31
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Originally Posted by Jbedford View Post
So BMW changed the rod bearings sometime in 2011, but nobody can tell me if my car has the new or old bearings. I sent my last oil change to Blackstone, and there was 0 lead in the sample at just shy of 9,000 KM. There were traces of aluminium. Blackstone hypothesised that I am on the new bearings due to the lack of traces of lead. I just want to be sure so I can calculate the additional costs to get my bearings done prior to a supercharger.
Again, the newer bearings are not a fix and have the exact same issues.

If you're supercharging, I'd definitely swap the bearings. I'd be doing the mains too.
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      11-01-2016, 08:16 PM   #32
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      11-03-2016, 11:11 AM   #33
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In for group buy
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      11-03-2016, 11:47 AM   #34
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      11-03-2016, 12:23 PM   #35
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Quote:
Originally Posted by Chris_08_M3 View Post
Looks like there aren't to many shops with a lot of experience changing M3 bearings....or not many local guys making the swap.

I don't mind doing it...I'm just afraid that I may end up with a bearing issue after doing it. What if my car is fine but I end up putting bearings that create the problem.

Anyone else with similar fears?

FYI, I changed my own bearings on my E60 M5 a year and a half ago. I used ARP rod bolts and drove 7K miles on the bearings I changed out. Not a single click or issue. No metal in the filter 3 oil changes later.
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      11-03-2016, 12:27 PM   #36
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I have 30,000km on my VAC/ARP combo so far.

I'll be pulling them out in another 50,000km to check the condition.
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      11-03-2016, 12:28 PM   #37
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Quote:
Originally Posted by doogee View Post
Again, the newer bearings are not a fix and have the exact same issues.

If you're supercharging, I'd definitely swap the bearings. I'd be doing the mains too.
There are supposedly oversized Rod Bearings available for the S65 or S85. This, or a company is still in development of them. Let me reach out to a friend who is a master technician of the S85 and see what he says.

As far as the Cryo-Treat bearings from VAC, I would not recommend them at all as they are adding extra unneeded material between the crankshaft and bearings. I have a few reputable friends who have done tests between the regular bearings and VAC Cryo-Treated bearings and the coated bearings looked like they had 20K miles after only having been driven 5K. Said friends also conducted these tests with multiple oil types and other variables to see what the best remedy was for treatment. It's just not worth it. The real issue lies with the bearings being too close to the crankshaft and not allowing enough oil to passage through and dissipate friction.
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      11-03-2016, 12:49 PM   #38
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Originally Posted by Doc K View Post
There are supposedly oversized Rod Bearings available for the S65 or S85. This, or a company is still in development of them. Let me reach out to a friend who is a master technician of the S85 and see what he says.

As far as the Cryo-Treat bearings from VAC, I would not recommend them at all as they are adding extra unneeded material between the crankshaft and bearings. I have a few reputable friends who have done tests between the regular bearings and VAC Cryo-Treated bearings and the coated bearings looked like they had 20K miles after only having been driven 5K. Said friends also conducted these tests with multiple oil types and other variables to see what the best remedy was for treatment. It's just not worth it. The real issue lies with the bearings being too close to the crankshaft and not allowing enough oil to passage through and dissipate friction.

Sounds like installation error to me. The coated VAC bearings have been tested and proven on multiple occasions. (One case a set was pulled from a supercharged vehicle with 40,000 miles on the bearings. They showed 0 wear.) They have the same clearance as OEM after the coating is applied.

Please attach pictures or names of the shops doing this work. Sounds like a lot of trouble to be pulling bearings after only 5k. Sounds like bullshit to me actually. You say they looked like they had 20,000 miles. Do you even know what a rod bearing should look like at 20,000 miles? It should still look new.

A highly reputable engine builder who I trust does not believe there is a tolerance issue.
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      11-03-2016, 12:54 PM   #39
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Quote:
Originally Posted by doogee View Post
Sounds like installation error to me. The coated VAC bearings have been tested and proven on multiple occasions. (One case a set was pulled from a supercharged vehicle with 40,000 miles on the bearings. They showed 0 wear.) They have the same clearance as OEM after the coating is applied.

Please attach pictures or names of the shops doing this work. Sounds like a lot of trouble to be pulling bearings after only 5k. Sounds like bullshit to me actually.

A highly reputable engine builder who I trust does not believe there is a tolerance issue.

I can assure you it's not and I'm not trying to push any agenda or anything. No need to be defensive. I have no doubt that there are some cars that did quite well with them. I even know of a 180K mile S85 on the original set of BMW bearings that is still driving. Just putting out what I know.

Also, the bearings were pulled early as a part of an experiment.
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      11-03-2016, 12:58 PM   #40
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I can assure you it's not and I'm not trying to push any agenda or anything. No need to be defensive. I have no doubt that there are some cars that did quite well with them. I even know of a 180K mile S85 on the original set of BMW bearings that is still driving. Just putting out what I know.

Also, the bearings were pulled early as a part of an experiment.
Well unfortunately for the owners of those vehicles, the mechanic doing the work is doing something very wrong.
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      11-03-2016, 01:00 PM   #41
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Well unfortunately for the owners of those vehicles, the mechanic doing the work is doing something very wrong.
If you say so.
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      11-03-2016, 01:04 PM   #42
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If you say so.
There really is no other explanation for the bearings to have drastic wear after 5K. The mechanic clearly did not check tolerance while installing the bearings, and or did not torque anything properly.

I'm being defensive because I strongly dislike unproven information being spread and this forum is pretty bad for that.
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      11-03-2016, 01:08 PM   #43
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Quote:
Originally Posted by doogee View Post
There really is no other explanation for the bearings to have drastic wear after 5K. The mechanic clearly did not check tolerance while installing the bearings, and or did not torque anything properly.

I'm being defensive because I strongly dislike unproven information being spread and this forum is pretty bad for that.
I agree, but I wouldn't have said it if I didn't know what I was talking about. The people I know are quite experienced as well and have rebuilt many, many motors. Rod bearing swap is pretty hard to fuck up. I've done it myself. And remember, I'm talking about the S85 here, not the S65, but the bearings are identical.
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      11-03-2016, 01:11 PM   #44
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Quote:
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I agree, but I wouldn't have said it if I didn't know what I was talking about. The people I know are quite experienced as well and have rebuilt many, many motors. Rod bearing swap is pretty hard to fuck up. I've done it myself. And remember, I'm talking about the S85 here, not the S65, but the bearings are identical.
This is exactly what points to installation error. The fact that the job is so simple. If tolerances are checked etc, the installer would be able to tell something is not right.

Nothing about your post makes sense. Especially the fact VAC bearings are not even Cryogenically hardened. So I dont even know what bearings you're talking about anymore.
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