rod bearings from a 59k mile motor

gobuffs · 10-28-2013, 08:16 PM

Car was in driver front incident with a curb that totalled the car. That is all the info I have on the history of this motor. These bearing were replaced with stock 702/703 bearing that were WPC treated. Also replaced the rod bolts with ARP ones (main reason for digging in). Will be running straight 40 weight Redline racing oil as this is going into a race car.

Here are the bearings. Cylinder 1 on the right, 8 on the left. Top bearings are on the bottom, bottom bearings on the top (just to confuse you). Bearing 4 has some serious wear on it.

regular guy · 10-28-2013, 09:01 PM

Quote:

Originally Posted by gobuffs

Car was in driver front incident with a curb that totalled the car. That is all the info I have on the history of this motor. These bearing were replaced with stock 702/703 bearing that were WPC treated. Also replaced the rod bolts with ARP ones (main reason for digging in). Will be running straight 40 weight Redline racing oil as this is going into a race car.

Here are the bearings. Cylinder 1 on the right, 8 on the left. Top bearings are on the bottom, bottom bearings on the top (just to confuse you). Bearing 4 has some serious wear on it.

Ouch. I'll add those to the photo registry. But before I do, when you labeled them 1-8 -- is that assembly order, or firing order?

Assembly order would be: 1&2, 3&4, 5&6, and 7&8 on the same journal.
Firing order would be: 1&5, 2&6, 3&7, 4&8 on the same journal.

gobuffs · 10-28-2013, 09:15 PM

Firing order. 1 being left bank, 5 being right bank.

regular guy · 10-28-2013, 09:28 PM

Quote:

Originally Posted by gobuffs

Firing order. 1 being left bank, 5 being right bank.

3&4 have me confused then because they look like they were on the same journal -- as they look like they have almost the same wear. Just trying to dot the i's here...because I will probably pull the photo apart into separate bearing pics for the journal.

Do you have any separate bearing pics to send via email?

gobuffs · 10-28-2013, 10:03 PM

The 2 banks have similar wear (top 4 vs bottom 4). Interesting how they are similar that way versus the cylinder on the opposite side of the same journal. 100% sure that is 1 to 8 bottom to top- I marked them on the way out.

I can take pics you desire.

Ronnydashore · 10-28-2013, 11:26 PM

For 60k miles in an engine like this those bearings look really good. Easily if that rate of wear continued, the engine would see atleast another 60k. This engine did not blow up and was working fine I am sure.

Transfer · 10-28-2013, 11:31 PM

Looks terrible to me, but I know nothing about this stuff.

chris719 · 10-29-2013, 12:58 AM

Quote:

Originally Posted by Ronnydashore

For 60k miles in an engine like this those bearings look really good. Easily if that rate of wear continued, the engine would see atleast another 60k. This engine did not blow up and was working fine I am sure.

I'm not a mechanical engineer but I would not assume it normal for any street car to have bearing wear down to the copper after 60k.

MFL · 10-29-2013, 03:24 AM

How did the plugs look?

MFL · 10-29-2013, 03:54 AM

Also, how did the crank look?

gobuffs · 10-29-2013, 06:35 AM

Plugs and crank looked fine.

CSBM5 · 10-29-2013, 06:50 AM

Quote:

Originally Posted by Ronnydashore

For 60k miles in an engine like this those bearings look really good. Easily if that rate of wear continued, the engine would see atleast another 60k. This engine did not blow up and was working fine I am sure.

Seriously, that deep into the copper is not something that is going to yield another 60k of service life. That one rod would spin that bearing well before any additional 60k miles. See, it's stuff like this which seriously lowers the level of discourse on this forum...sadly...although most likely a post like this one is simply done to stir up flames since the poster has multiple identities along with a tainted past on the M5board under other usernames. Apparently M3post does not mind people having multiple identities on this board since they are aware of the situation.

MilehighM3 · 10-29-2013, 07:08 AM

Quote:

Originally Posted by gobuffs

Firing order. 1 being left bank, 5 being right bank.

Bank 1 is the right bank and 2 if the left

0-60Motorsports · 10-29-2013, 07:49 AM

Ouch that is some serious bearing wear there.

W/// · 10-29-2013, 07:55 AM

Quote:

Originally Posted by Ronnydashore

For 60k miles in an engine like this those bearings look really good. Easily if that rate of wear continued, the engine would see atleast another 60k. This engine did not blow up and was working fine I am sure.

What is this based on? Sounds like complete garbage to me. If you look at the pictures that EAS has provided on their engine tear downs, I'm sure that oil analysis would have yielded a very high copper level. That is NOT fine.

BMRLVR · 10-29-2013, 09:12 AM

Quote:

Originally Posted by Ronnydashore

For 60k miles in an engine like this those bearings look really good. Easily if that rate of wear continued, the engine would see atleast another 60k. This engine did not blow up and was working fine I am sure.

OM VT3 · 10-29-2013, 09:26 AM

I'd love to see mine think they would be shocking

speedaddictM3 · 10-29-2013, 09:37 AM

Just wait till the fanboys flood this thread telling us this is all normal and that M engineers are god's gift to humanity and that anything with an M logo on it is a flawless model of perfection

cposk · 10-29-2013, 09:45 AM

Another set of bad looking rod bearings. Must be part of that .05%...

gobuffs · 10-29-2013, 11:00 AM

Quote:

Originally Posted by Bmw135er

Bank 1 is the right bank and 2 if the left

My mistake.

MFL · 10-29-2013, 02:11 PM

Yep... This post and EAS are just a bunch of trolls...

HeartMD · 10-29-2013, 05:58 PM

Great another confidence inspiring thread.

10-28-2013, 08:16 PM	#1
gobuffs Captain 76 REP 709 Posts Drives: E30 M3 S54 (race car) Join Date: Mar 2008 Location: Texas iTrader: (4)	rod bearings from a 59k mile motor Car was in driver front incident with a curb that totalled the car. That is all the info I have on the history of this motor. These bearing were replaced with stock 702/703 bearing that were WPC treated. Also replaced the rod bolts with ARP ones (main reason for digging in). Will be running straight 40 weight Redline racing oil as this is going into a race car. Here are the bearings. Cylinder 1 on the right, 8 on the left. Top bearings are on the bottom, bottom bearings on the top (just to confuse you). Bearing 4 has some serious wear on it.
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10-28-2013, 09:15 PM	#3
gobuffs Captain 76 REP 709 Posts Drives: E30 M3 S54 (race car) Join Date: Mar 2008 Location: Texas iTrader: (4)	Firing order. 1 being left bank, 5 being right bank.
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10-28-2013, 10:03 PM	#5
gobuffs Captain 76 REP 709 Posts Drives: E30 M3 S54 (race car) Join Date: Mar 2008 Location: Texas iTrader: (4)	The 2 banks have similar wear (top 4 vs bottom 4). Interesting how they are similar that way versus the cylinder on the opposite side of the same journal. 100% sure that is 1 to 8 bottom to top- I marked them on the way out. I can take pics you desire.
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10-28-2013, 11:26 PM	#6
Ronnydashore Banned 6 REP 54 Posts Drives: 2012 Silverstone M3 DCT Join Date: Oct 2013 Location: Hollywood iTrader: (0)	For 60k miles in an engine like this those bearings look really good. Easily if that rate of wear continued, the engine would see atleast another 60k. This engine did not blow up and was working fine I am sure.
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10-28-2013, 11:31 PM	#7
Transfer Major General 5,313 REP 5,875 Posts Drives: Bronco Wildtrak, Tesla MYP Join Date: Mar 2010 Location: Issaquah, WA iTrader: (1)	Looks terrible to me, but I know nothing about this stuff.
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10-29-2013, 03:24 AM	#9
MFL Major 177 REP 1,246 Posts Drives: E92 M3 Join Date: Sep 2013 Location: Bellevue, WA iTrader: (3) Garage List 2010 BMW M3 [9.00]	How did the plugs look?
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10-29-2013, 03:54 AM	#10
MFL Major 177 REP 1,246 Posts Drives: E92 M3 Join Date: Sep 2013 Location: Bellevue, WA iTrader: (3) Garage List 2010 BMW M3 [9.00]	Also, how did the crank look?
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10-29-2013, 06:35 AM	#11
gobuffs Captain 76 REP 709 Posts Drives: E30 M3 S54 (race car) Join Date: Mar 2008 Location: Texas iTrader: (4)	Plugs and crank looked fine.
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10-29-2013, 07:49 AM	#14
0-60Motorsports Brigadier General 926 REP 3,263 Posts Drives: BMW M3 JB 04 Coupe Join Date: Aug 2007 Location: Kingdom of Bahrain iTrader: (1)	Ouch that is some serious bearing wear there. __________________ Current Mods: 2004 E46 M3cs JB/CSL 2010 E70 X5M AW/BLACK 2011 VW Golf R DSG White/Black IG: @060Motorsports
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10-29-2013, 09:26 AM	#17
OM VT3 Lieutenant Colonel 146 REP 1,665 Posts Drives: 2011 e92 zcp m3 Join Date: Aug 2010 Location: Somewhere iTrader: (1)	I'd love to see mine think they would be shocking
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10-29-2013, 09:37 AM	#18
speedaddictM3 Banned 4 REP 264 Posts Drives: 2008 E90 M3 Join Date: Sep 2013 Location: Canada iTrader: (0)	Just wait till the fanboys flood this thread telling us this is all normal and that M engineers are god's gift to humanity and that anything with an M logo on it is a flawless model of perfection
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10-29-2013, 09:45 AM	#19
cposk Private First Class 17 REP 154 Posts Drives: 08 IB M3 (E90) , 12 X5d Join Date: May 2012 Location: Annapolis - Maryland iTrader: (1)	Another set of bad looking rod bearings. Must be part of that .05%... __________________ E46 Auto to 5-Speed Swap
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10-29-2013, 02:11 PM	#21
MFL Major 177 REP 1,246 Posts Drives: E92 M3 Join Date: Sep 2013 Location: Bellevue, WA iTrader: (3) Garage List 2010 BMW M3 [9.00]	Yep... This post and EAS are just a bunch of trolls...
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10-29-2013, 05:58 PM	#22
HeartMD Captain 53 REP 656 Posts Drives: 2011.75 MW,ZCP E92 Join Date: Apr 2011 Location: CT iTrader: (0)	Great another confidence inspiring thread. __________________ 2011.75 E92 MW/BB extended,ZCP,ZP2,ZCV, IPOD,BMW APPS, Heatedseats,6MT, Edition Black Chrome Grills & Side Gills, CF splitters, CF performance spoiler, CF mirror caps, Turner black anodized pedals, Akropovic Evolution exhaust w/CF tips, Still Undecided on tune, AFE Pro5r, AFE intake scoops, LUX H8 2009 E92 JB/Black 335 xdrive (retired)
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