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      11-12-2013, 12:24 PM   #1
Race Precision Motorsport
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2013 Supercharged M3, 6k miles, Rod bearing service results

Hello M3post!

We're glad to be here and offer our services and information to the community.

Intro
The S65 Rod Bearing issue is becoming a more important aspect of ownership. Having completed the rod bearing service on a very low mileage 2013 M3, we thought it would be fitting to contribute our findings as our first post. With this vehicle outside of the notorious 2008-early 2009 production ranges and with such low mileage, there may be other causes to the wear we found.




Data
2013 BMW M3
6,xxx miles
Castrol BMW Motorsport TWS 10w-60
ESS VT2-625 Supercharger
91 octane
So. California
Used for daily, short commutes (<10mi)













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      11-12-2013, 12:25 PM   #2
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Old bearings out


Bearing 1


Bearing 2


Bearing 3


Bearing 4


Bearing 5


Bearing 6


**Bearing 7


Bearing 8


Close-up of Top Bearing #7
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      11-12-2013, 12:26 PM   #3
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In with the new:
Castrol BMW Motorsport TWS 10w-60
BMW OEM Oil Pan Gasket
BMW OEM Oil Filter
VAC Coated Rod bearings
ARP Rod bolts



OE oil pan gasket used


All ready to go


Blackstone report coming soon!

Possible cause of wear
Because this M3 was used for short, daily commutes, improper warm-up is a plausible cause of the wear.

Last edited by Race Precision Motorsport; 11-12-2013 at 12:36 PM.
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      11-12-2013, 12:27 PM   #4
rev9k
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ouch. is bearing # 7 actually scored in the middle?
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      11-12-2013, 12:48 PM   #5
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what exactly is proper warmup
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      11-12-2013, 01:11 PM   #6
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Very good job and THX for sharing...but...
The question is....
Will the VAC Coated Rod bearings being better ?
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      11-12-2013, 01:13 PM   #7
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What triggered the owners interest in conducting the swap out?
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      11-12-2013, 01:23 PM   #8
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Quote:
Originally Posted by JEllis View Post
What triggered the owners interest in conducting the swap out?
Dat blower
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      11-12-2013, 01:24 PM   #9
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Thanks for sharing results, very interesting.

Quote:
Originally Posted by cambit View Post
what exactly is proper warmup
Keep it under 3k RPM until reaching ~200F oil temp.
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      11-12-2013, 01:27 PM   #10
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This is just horrible. Even 2013 cars are suffering from this issue and such low mileage. What guarantees are in place that the VAC bearings will help mitigate this problem?
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      11-12-2013, 01:31 PM   #11
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Wow thx for posting guys. Great work.
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      11-12-2013, 01:32 PM   #12
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the issue is what you make of it. Plenty of M3 driving around (that don't even contribute to foums) running just fine.
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      11-12-2013, 01:56 PM   #13
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interesting
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      11-12-2013, 01:58 PM   #14
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Anyone that actually knows how rod bearings work would be horrified by this. This is so unacceptable.
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      11-12-2013, 02:23 PM   #15
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scary imo..... very scary.
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      11-12-2013, 02:27 PM   #16
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I'd think twice about sticking in 10w-60.
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      11-12-2013, 02:59 PM   #17
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Would love a 12k mi follow up exam of the new bearings
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      11-12-2013, 02:59 PM   #18
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VT2-625 with 91 octane probably doesn't help either.

ESS recommends 93+ for any of the kits over 600hp
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      11-12-2013, 03:01 PM   #19
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The way some of those bearings are damaged does seem to show detonation related damage. What are people thinking running this kit on 91 octane!
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      11-12-2013, 03:03 PM   #20
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^^Is there a stand alone ECU in the market for m3s? Data logging
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      11-12-2013, 03:16 PM   #21
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was the owner experiencing any symptoms to prompt replacement? or was it just the blower install in general?
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      11-12-2013, 03:35 PM   #22
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Wow this sucks .....
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