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for those interested, i'm almost at 30k on my ACL bearings with zero issues. I also supercharged it a few months ago. No issues. I'm looking at every fin on the filter looking for copper flakes, and at the first sign of it, i'll do another bearing change and post the bearing conditions. My plan was to just do bearing change at 30k and show you the ACL bearing conditions, but man... I'm enjoying this car too much! maybe i'll do it one of these weekends. I feel I can probably do it much faster this time and forget about plastigage, vanos pump assembly, and all that.

I have the extra clearanced ACL race bearings straight from ACL. I forget the actual part number. I posted it up on my original thread when I was doing the bearing change. Personally, that's what I recommend. No, I'm not being paid or incentivized to say that.
This is great to hear. I’m going with ACL RB’s as well and Lang Racing is doing my service. They also have recommended it and it was glad to here they weren’t pushing me to use BE RB’s or WPC. Apparently, they have used ACL’s for preventive maintenance on S85 motors and race S65 & S54 motors.


2010 E60 M5 • Space Grey
 

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for those interested, i'm almost at 30k on my ACL bearings with zero issues. I also supercharged it a few months ago. No issues. I'm looking at every fin on the filter looking for copper flakes, and at the first sign of it, i'll do another bearing change and post the bearing conditions. My plan was to just do bearing change at 30k and show you the ACL bearing conditions, but man... I'm enjoying this car too much! maybe i'll do it one of these weekends. I feel I can probably do it much faster this time and forget about plastigage, vanos pump assembly, and all that.

I have the extra clearanced ACL race bearings straight from ACL. I forget the actual part number. I posted it up on my original thread when I was doing the bearing change. Personally, that's what I recommend. No, I'm not being paid or incentivized to say that.
Are you still running 10w-60? I ran 5w-50 first oil change but chickened out and when back to 10-60. I can say for me the 5-50 ran smoother than 10-60. My feelings is to go back to 5-50. I’m also running +1 acl’s, with 6k on them.
 

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yep 10-60w. i want to switch to 15-50 but i live in arizona when it gets to 110+*F. i may go to 15-50 in the winter time--just because it's the heaviest oil walmart carries. hate paying 100 just for damn oil!
 

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yep 10-60w. i want to switch to 15-50 but i live in arizona when it gets to 110+*F. i may go to 15-50 in the winter time--just because it's the heaviest oil walmart carries. hate paying 100 just for damn oil!
Do you mean 5w-50? Cause 15w-50 will be worse than 10w-60 dring winter time.
 

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I just finished doing bearings/VANOS line/motor mounts etc. on my 2007 M5 with 104k mi. Sorry for the image links, they don't seem to render inline.


http://e36-electronic.com/photos/M5/rb1.jpg

My bearings looked better than expected for 104k mi:


http://e36-electronic.com/photos/M5/rb4.jpg

I went with custom ACL bearings from Lang Racing ("customized for .0023" to .0025" Bearing Clearance"):



http://e36-electronic.com/photos/M5/rb2.jpg
http://e36-electronic.com/photos/M5/rb3.jpg

Plastigauge looked good:


http://e36-electronic.com/photos/M5/rb6.jpg


http://e36-electronic.com/photos/M5/rb7.jpg

I got the car back together yesterday and everything is fine so far.

That underbelly picture looks hella cool.. I sound like when I was a teenager in the late 80's lol.. Yeah I went with the Lang Racing ACL selected rod bearings coupled with ARP rod bolts. I exchanged emails with Andrew Lang a few times for info and I feel pretty good about my choice. If I was still living there in SoCal I'd have his shop do the job.
 
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