|
|
10-23-2019, 03:05 PM | #133 | |
Major General
4587
Rep 7,210
Posts |
Quote:
|
|
Appreciate
0
|
10-23-2019, 04:21 PM | #134 | |
Colonel
2694
Rep 2,167
Posts
Drives: 2011 E92 M3
Join Date: Oct 2017
Location: Victoria
|
Quote:
No way to know unless you look. And if you are looking, you might as well replace. Very happy that I know I have proper rod bearing clearance for a high performance engine. Hopefully I get many, many, many years of fun out of this V8 lump. Cheers,
__________________
2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies... |
|
Appreciate
1
Assimilator1615.50 |
11-28-2019, 01:30 PM | #135 |
Captain
585
Rep 848
Posts |
I've made the switch to Redline 5w-50. If you look more at Troy's Instagram he's got some fairly compelling stories on this.
I live in a cold climate too. It's the cold start that I believe does the damage with the thicker OEM oil. |
Appreciate
0
|
12-22-2019, 08:21 AM | #136 |
Major
360
Rep 1,080
Posts |
Hell, I came here looking for an answer to the cold start clank. Was wondering if the 5W50 would be less inclined to clank for a second after the car sat for a week. Especially in winter months and near or below freezing temps.
|
Appreciate
0
|
12-22-2019, 08:25 AM | #137 |
Major
1105
Rep 1,387
Posts |
If the cold start clank isn't a big deal, I would personally not change oil types outside of the factory spec.
|
Appreciate
0
|
12-22-2019, 10:07 AM | #138 |
Lieutenant General
5611
Rep 11,070
Posts |
You could try it, but if the clank is from oil draining down because the car has not been driven for a week, then I think the lighter oil would also drain down.
|
Appreciate
0
|
12-26-2019, 03:55 AM | #140 |
Lieutenant Colonel
1076
Rep 1,617
Posts |
|
Appreciate
0
|
12-26-2019, 11:17 AM | #142 |
Colonel
2694
Rep 2,167
Posts
Drives: 2011 E92 M3
Join Date: Oct 2017
Location: Victoria
|
__________________
2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies... |
Appreciate
0
|
12-26-2019, 11:31 AM | #143 | |
Colonel
2694
Rep 2,167
Posts
Drives: 2011 E92 M3
Join Date: Oct 2017
Location: Victoria
|
Quote:
Changing the viscosity of the oil by a small fraction will not fundamentally change the overall results. People run redline 10W60, which is thicker than OE, without significant increases in wear and failure rates. Others run 0W40 without fundamentally changing the wear or failure rates. The available data (part measurements and flow data) shows that there is a statistical chance that your S65 or S85 was built too tight. If that is the case, unicorn tears and angel blood will not protect your bearings. Cheers,
__________________
2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies... Last edited by Scharbag; 04-03-2020 at 03:06 PM.. |
|
Appreciate
0
|
12-26-2019, 02:06 PM | #144 |
Brigadier General
4036
Rep 4,064
Posts |
There are also several stock s65 that made it to higher mileage on stock bearings, i think it was one at 285k that came to mind where it was bought by someone here and bearings were changed.
So the fact that an S85 running some snake oil miracle mix made it, means close to zero. The issue is no one can tell you where that engine is on the tolerance stack until you open the engine, so you either don't believe in the data out there or you want to take a 10k+ risk. Others prefer to spend a bit and do the bearing to reduce that risk.
__________________
|
Appreciate
2
Scharbag2694.00 Assimilator1615.50 |
12-26-2019, 03:40 PM | #145 | |
Lieutenant General
5611
Rep 11,070
Posts |
Quote:
|
|
Appreciate
1
Assimilator1615.50 |
12-26-2019, 03:59 PM | #146 |
Lieutenant Colonel
1076
Rep 1,617
Posts |
Hey guys, I honestly don't know. Purchased car at 39k miles, done ~25-30 track days with it, had BE bearings + BE-ARP bolts installed about 6-8 track days and ~6k miles ago. Then it blew (overheat + rod knock on track) at 67k miles. Oil used in my ownership has been Castrol TWS 10w60, OE BMW (Shell) 10w60, Ravenol 10w60. When the motor blew it was on OE BMW (Shell) 10w60. We inspected the motor. Engine oil filter was like a glitterbomb. Opened the bottom, we found bearing #1 seized to the crank. Didn't bother investigating any further because I didn't want to bother paying even more labor to open up the top and get deep in there. Was considering a 4.6L stroker build but ended up replacing with a reman 4.0L motor. Put BE bearings and BE-ARP bolts in this new motor as well. Have 2,000 miles and 2 track days on this new motor now. |
Appreciate
0
|
12-26-2019, 05:27 PM | #147 | |
Colonel
2694
Rep 2,167
Posts
Drives: 2011 E92 M3
Join Date: Oct 2017
Location: Victoria
|
Quote:
Of course, you need to not be running 8000RPM with cold oil. But for daily driving and normal use, there is no reason to think that the viscosity of the oil is the culprit according to the supplied measurements and data. This chart, taken from AutoTalent's post, is what I am basing my statements on (plus all the other data available from BE and AutoTalent). It is clearly shown that with adequate clearance, proper oil flow can be established when using 10W60 oil. The chart also shows that the OE clearance of the AutoTalent test engine was inadequate to allow for proper oil flow, especially above 8000RPM. As some of the professional engine builders have said, there is no way an engine can survive at 8000+ RPM with such low oil flow volumes. In my case, I have BE bearings with BE-ARP hardware. I also run Redline 5W50 because it has a viscosity (21) and HTHS (5.0) that is very similar to the original Castrol 10W60 oil specified by BMW (22.7, 5.2). That said, I have run Castrol 5W50 Syntec (18.4, 4.1) in the past and it seemed just fine. Cheers,
__________________
2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies... Last edited by Scharbag; 12-26-2019 at 05:37 PM.. |
|
Appreciate
2
wfdeacon881105.00 tsk941557.00 |
12-26-2019, 06:34 PM | #148 |
Lieutenant General
5611
Rep 11,070
Posts |
10W60 probably is not too thick once it is hot, but maybe 5W50 flows better during warm up or flows better when clearance is on the tight side of stock specs.
|
Appreciate
0
|
12-26-2019, 07:56 PM | #149 | |
Colonel
2694
Rep 2,167
Posts
Drives: 2011 E92 M3
Join Date: Oct 2017
Location: Victoria
|
Quote:
__________________
2011 E92 M3 - 6MT, ZCP, ZF LSD, ESS G1, Some other goodies... |
|
Appreciate
0
|
12-27-2019, 06:33 AM | #150 |
OPN DIFF
494
Rep 1,917
Posts
Drives: 10' E90 M3 6MT LB
Join Date: Oct 2012
Location: Pacific Ocean
|
I had to... lol
__________________
'10 LB E90 slicktop/speed cloth/6MT ex. '06 330i 6MT & '10 n54 6MT Msport Autocross vids https://www.youtube.com/user/tigermack https://www.instagram.com/tigermack |
Appreciate
0
|
12-29-2019, 08:51 PM | #151 | |
Major General
5906
Rep 6,652
Posts |
Quote:
|
|
Appreciate
0
|
12-31-2019, 09:44 AM | #152 |
AW M Addict
40
Rep 217
Posts |
I ran Redline and also Joe Gibbs when Driven when I lived in Illinois. I firmly believe that both are a substantial improvement on the S65 and S85. Once I put fresh bearings in our M5 and M3 I will switch again.
__________________
1988 Alpine White M3 || 1998 AW M3 Sedan (Race)
2000 Alpine White M5 || 2001 Alpine White M3"T" 2008 Alpine White M5 || 2008 Alpine White M3 Cab 2010 Alpine White X5M || All 3 Pedals Sans X5M alpinewhitem.com //coming soon |
Appreciate
0
|
12-31-2019, 09:46 AM | #153 |
AW M Addict
40
Rep 217
Posts |
Not stating the builder did not perform their job correctly, however after installing and building many engines the past 20 years any engine will seize if not properly put together. We do not know if they just slapped in a set of BE's without checking tolerances.
__________________
1988 Alpine White M3 || 1998 AW M3 Sedan (Race)
2000 Alpine White M5 || 2001 Alpine White M3"T" 2008 Alpine White M5 || 2008 Alpine White M3 Cab 2010 Alpine White X5M || All 3 Pedals Sans X5M alpinewhitem.com //coming soon |
Appreciate
0
|
12-31-2019, 09:58 AM | #154 |
Brigadier General
4036
Rep 4,064
Posts |
Most likely main bearing went first.
__________________
|
Appreciate
1
SYT_Shadow11736.00 |
Post Reply |
Bookmarks |
|
|