There's two of them, found in the oil pan. Chain tensioner OK. Not aluminum.
There's two of them, found in the oil pan. Chain tensioner OK. Not aluminum.
Can't help you but you are not the only one:
They do not look like part of them, but I would remove the vcover and pay close attn to all rockers and make sure they are all good.
Slippery said:Can't help you but you are not the only one:
They do not look like part of them, but I would remove the vcover and pay close attn to all rockers and make sure they are all good.
The guy working in the engine found that thread as well.
Sadly, no resolution there.
It they're steel or cast iron, there's only so many places they could come from. The rockers are aluminum, and the pads that run on the cam are a different shape. The wear on the pics here and in the linked thread look like chain wear, but not running along it, almost as if they are guides near a sprocket. How does the oil pump chain and tensioner look?
I haven't seen anything live. The curve of the bottom suggests a main bearing kind of diameter to me. It ran fine, made no noise. Almost looked like a tooth off an old, crude reluctor wheel to me, but that would make running a problem.
I'll figure it out when I see it.
I had similar thoughts, and I looked at photos of main caps and the reluctor wheel, but I didn't see anything that looked like those bits. I don't know what would cause that sort of wear on either of those parts.
Wow, that's incredibly annoying. It's killing me that I don't even have a guess. And there are several people with exactly this. SOMEBODY KNOWS!
Please report back when it becomes clear...
I've got the oil pan off mine right now, next time I'm under there I'll take a close look
Man, I've had a few M30s apart and I am stumped at what they could be. Out of curiosity what is the M30 variant (B34, B35, etc)?
88 535. Not enough of a BMW guy to know more.
M30B34 then. I can't think of where it would come from the head, crankcase, oil pan or timing setup. I do know I haven't found them in the pan of my 400,000 km motor so they must still be attached somewhere in there.
Somebody dropped them in there just to mess with you.
I have a 1986 M535i. It doesn't look familiar to me either.
I took the two pieces down to an old timey German car shop, handed one to each of the guys, and they said, "Yeah, that's the ears off the clutch release bearing."
Turns out there is a chunk of the oil pan that also creates the front cover for the bellhousing, so when the oil pan came off, they came not from the inside of the engine, but from the bellhousing, where they had been sitting for quite a while, because the clutch was decent, but not new.
Cool, because for the life of me, I couldn't find a hole to insert them inside the engine.
Well allrighty then. "Sir I found pieces of your clutch in your oil pan."
Customer: *slowly pulls out wallet*
Now that the mystery is solved I can totally imagine how this would happen. Some M30s had an odd two-piece oil pan/clutch cover assembly while others had it all as a single casting. For the latter those tabs sure would fall right in if they broke off the throw out bearing...
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