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      04-09-2022, 08:53 AM   #1
kav
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Just had Vanos and bearings done.

Just in case anyone curious.

My bearings at 56,000km.

Tracked a few times but really a garage Queen. Over-serviced to to max. Owned since new. Castol oil change every 1500-2000. Always warmed up before pushed.

Oil analysis every oil change. No warning signs.

Didn't look as bad as I expected.

[IMG][/IMG]
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      04-09-2022, 09:15 AM   #2
GuidoK
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No copper visible but the wear is definately starting, even on this pampered garage queen with the ultra frequent oil changes.
So that 80,000km or 50k miles as a recommended interval by lots of specialists isn't that crazy.

Imangine that there are also 150k+ miles cars out there without rodbearing refreshes...little ticking timebombs
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      04-09-2022, 11:10 AM   #3
kav
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Gambling for sure. I knew I was a bit early but didn't want to worry.

Also put the VAC motorsports hub with the vanos rebuild.
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      04-09-2022, 12:50 PM   #4
JustinHEMI
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Quote:
Originally Posted by GuidoK View Post
No copper visible but the wear is definately starting, even on this pampered garage queen with the ultra frequent oil changes.
So that 80,000km or 50k miles as a recommended interval by lots of specialists isn't that crazy.

Imangine that there are also 150k+ miles cars out there without rodbearing refreshes...little ticking timebombs

Mine is at 125K and I can't find evidence that it's ever been done. Top of the list of things to do ASAP.
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      04-21-2022, 04:29 PM   #5
r3vmatch
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It seems like these are a 60K mi wear item like a timing belt in some cars. No questions about it.

It's a bit scary to talk with Z4-M owners who are flippant about this issue :/
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      04-22-2022, 09:58 AM   #6
1messedupZ4M
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Quote:
Originally Posted by r3vmatch View Post
It seems like these are a 60K mi wear item like a timing belt in some cars. No questions about it.

It's a bit scary to talk with Z4-M owners who are flippant about this issue :/

Buddy of mine has 130k on his tracked Z4M on the stock rod bearings.

Scary to say the least.
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      04-22-2022, 02:54 PM   #7
mchart
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Scary, but at least he's not gambling with the faulty bearings that would slip in the early S54 engines..
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      04-22-2022, 04:21 PM   #8
Michael9218
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Over hyped problem in my opinion. Just because a bearing has visible wear doesn't mean it was about to catastrophically fail. How many motors have actually failed or even developed a rod knock?

Also, I fail to see how changing oil at 2,000 miles helps. Waste of oil...
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