Blackstone analysis 2011 e90 M3

Siajoon · 10-15-2018, 10:59 PM

Hey guys I wanted to run this by you guys and see what you think... I got a oil analysis about roughly 10 months ago and I'm going to get another one in a few days... to me the levels all seem fine and presuming that my next analysis stays within the same levels do you guys think I should still go forward with rod bearing service? I am aware that my updated bearings for the 2010+ are made of different material aluminum/tin correct me if I'm wrong but if my aluminum and tin levels stay as low as they are now or atleast below universal averages do you think it's okay to keep my original bearings?

Any advice or insight would be appreciated. Thanks

Siajoon · 10-15-2018, 11:01 PM

Miles on the oil we're about 5k by the way.

GORDON.M3 · 10-15-2018, 11:10 PM

do the bearings just for the peace of mind. $2k is a lot better than $20k.
2011 is a problem year, my friend with a 2011 blew his motors twice.

Siajoon · 10-15-2018, 11:13 PM

Quote:

Originally Posted by GORDON.M3

do the bearings just for the peace of mind. $2k is a lot better than $20k.
2011 is a problem year, my friend with a 2011 blew his motors twice.

Why is it the problem year?

Rich150001 · 10-16-2018, 01:30 AM

"Newer factory bearings (2010.5 and later) are made from tin-aluminum, not lead-copper. Tin-aluminum bearings are 4-times harder on the surface than lead-copper bearings. This extra hardness shows signs of doing more damage to motors as there seems to be more bearing failures with 2010.5 and later vehicles. Tin-aluminum bearings also don't show the same signs of premature wear in Blackstone oil analysis due to lack of lead and copper."

Source: http://bebearings.com/

Scharbag · 10-16-2018, 05:19 AM

My 2011 model year was built in 04 2010 iirc. It had older lead/copper bearings in it. Not sure exactly when the swap to tin/aluminum happened.

Regardless, the issue is not material as much as it is about probabilities and tolerance stacking. Look at the typical bearing photos coming out of S65 engines for evidence of this fundamental issue.

$2k <<< $20k.

10-15-2018, 10:59 PM	#1
Siajoon ///Majestic 1857 Rep 2,091 Posts Drives: 2011 E90 ///M3 Join Date: Jun 2010 Location: SoCal iTrader: (1)	Hey guys I wanted to run this by you guys and see what you think... I got a oil analysis about roughly 10 months ago and I'm going to get another one in a few days... to me the levels all seem fine and presuming that my next analysis stays within the same levels do you guys think I should still go forward with rod bearing service? I am aware that my updated bearings for the 2010+ are made of different material aluminum/tin correct me if I'm wrong but if my aluminum and tin levels stay as low as they are now or atleast below universal averages do you think it's okay to keep my original bearings? Any advice or insight would be appreciated. Thanks Attached Images
	Appreciate 0 Tweet Quote

10-15-2018, 11:01 PM	#2
Siajoon ///Majestic 1857 Rep 2,091 Posts Drives: 2011 E90 ///M3 Join Date: Jun 2010 Location: SoCal iTrader: (1)	Miles on the oil we're about 5k by the way.
	Appreciate 0 Quote

10-15-2018, 11:10 PM	#3
GORDON.M3 Brigadier General 1421 Rep 3,001 Posts Drives: E92 M3 • F25 X3 M-Sport Join Date: Dec 2013 Location: LAX/YYZ/NRT iTrader: (11)	do the bearings just for the peace of mind. $2k is a lot better than $20k. 2011 is a problem year, my friend with a 2011 blew his motors twice. __________________ INSTAGRAM: GORDON.M3 North American Mr12Volt Carplay/Android Auto Distributor DINAN \| EVOSPORT \| VAC \| ARP \| RD SPORT \| NEEZ \| EIBACH \| CSF \| IND \| BILSTEIN \| KLASSEN \| BREMBO \| ENDLESS \| BBS \| BPM SPORT \| PROJECT MU \| EVENTURI
	Appreciate 0 Quote

10-16-2018, 01:30 AM	#5
Rich150001 Lieutenant 109 Rep 461 Posts Drives: 2016 M4 Join Date: Sep 2011 Location: Arlington (Ballston), Va iTrader: (0)	"Newer factory bearings (2010.5 and later) are made from tin-aluminum, not lead-copper. Tin-aluminum bearings are 4-times harder on the surface than lead-copper bearings. This extra hardness shows signs of doing more damage to motors as there seems to be more bearing failures with 2010.5 and later vehicles. Tin-aluminum bearings also don't show the same signs of premature wear in Blackstone oil analysis due to lack of lead and copper." Source: http://bebearings.com/ __________________ 16 M4 / 17 C7 (Sold) / 08 E92 M3 AW (Sold) / 09 Yamaha R6 (Sold)
	Appreciate 1 GORDON.M31421.00 Quote

10-16-2018, 05:19 AM	#6
Scharbag Colonel 2621 Rep 2,138 Posts Drives: 2011 E92 M3 Join Date: Oct 2017 Location: Victoria iTrader: (0) Garage List 2011 BMW E92 M3 [0.00]	My 2011 model year was built in 04 2010 iirc. It had older lead/copper bearings in it. Not sure exactly when the swap to tin/aluminum happened. Regardless, the issue is not material as much as it is about probabilities and tolerance stacking. Look at the typical bearing photos coming out of S65 engines for evidence of this fundamental issue. $2k <<< $20k. __________________ 2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies...
	Appreciate 0 Quote