BMW M5 Forum and M6 Forums banner

Spun 2 bearings E60 M5

4K views 33 replies 13 participants last post by  Skills 
#1 ·
Hi Guys,

Just bought my dream car, 2006 E60 M5. Drove it home and gave her a nice wash and wax. Took my dad for a spin in the car. I put it on M mode and let her rip. Didn't notice that it went to manual on M mode and I redlined the car, but I caught it quick and changed gears. everything was great after that. Parked the car let it cool down and shut her off. When I got back into the car and turned her on the dreaded limp mode and increase emissions came on. We decided to bring down the pan and we found a lot of copper in the oil. Also saw that I spun 2 bearings and one of the bearings broke into pcs. Luckily the car gods were with me cause the crank has no damage, no scratches. I believe I have the updated vanos gears as well. Going to put new ACL bearing and bolts from Lang Racing as well as the High pressure Vanos lines and chain guide with oil squirters. Also going to throw in 2 new motor mounts as one seems to have a lot of play. Im doing all the work my self. Only concern I have is doing the back lash on the gears. I know I need to clean out the oil pump and the vanos solenoid as well. Only drove the car for 15 miles and i'm addicted to the car lol. I wished I could have enjoyed it a bit more but it is what it is. Keep you all posted how this turns out.
 

Attachments

See less See more
4
#3 ·
If the bearings truly spun there's no way your crank is fine. It will be smooth as it's been ground by the con rod. But both crank and con rod need to be pulled. Post pics of the failed, bearings, crank journals and con rod cap.
We pulled it out and inspected it and looked fine, no marks, lines or scorn. We put it back on cause we are going to order the bearings. There was no silver metal in the pan or filter just saw copper. I will take pictures tomorrow and post it. Conrod cap looked good. Maybe i didn't spin the bearing and it just got worn? I know the groove was shaved down on the 2 bearings that we pulled out.
 
#5 ·
I really wouldn't gamble with just throwing new bearings in with two that completely spun. Good news is you might as well build a stroker, or will at least have the excuse to do so.
 
#6 ·
Nice to see someone keep their head up after such a ****ty moment. Hope to see it rebuilt and you enjoying the beast that we all get to everyday.

But I am curious who you bought it from for it to explode 15 miles later? Might be able to return it (kinda late now that you took it apart)
 
#7 ·
Bought it locally here in Miami. The car just had a bunch of work from a shop here called Autowerke and the specialize in BMW M Series. Ive called and text the seller but he's nowhere to be found now that I told him the news "typical". I really like the car and I knew i was taking a gamble on it with all the problems it has, but I was going to do all the preventive work regardless this week. I know everyone is saying crank damage but it's crazy that the crank looks really good. It looks good just like the other bearings that didn't spin. Will post some pictures tomorrow of the crank.
 
#9 ·
Redlined how bad? I doubt what you did caused the problem.
 
#22 ·
I also went to MPI "Miami Performance Inc" I heard they were great. I went to talk to the owner and he talked so bad about the M5 and how much he hates. Not a good way to win a customer, so I said thank you and just left. Active autowerke are much nicer and helpful so I rather take it to them. Ask fo Andy
 
#28 ·
10k+ for stroker parts - rods, pistons, and crank.

Biggest cost would be shop labor and if any other work would need to be done to your block, and then the cost increasing with scope creep because you might as well do x y and z while the engine is out and apart.

Barring you need to refinish your block, and not a crazy overbore, I'd budget low 20's for bare bones to mid 30's depending on how far you want to go and having someone else do all the work.

If you already have to pay for the labor to yank out a shot engine, it can make more sense money wise to go for the stroker. For the money supercharging is more cost effective to make power. Still working on trying to convince the wife of that.
 
#30 · (Edited)
If it truly spun rod bearings, there’s no way it didn’t do damage to the crank and rod. It may look ok to the untrained eye, but definitely get someone more experienced involved. You’re throwing away money putting new bearings in. We did that once for an E60 M5 Customer so he could immediately trade it in, the engine didn’t even make it 10 miles. It ended up being a huge mistake doing what he asked.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top