Quote:
Originally Posted by miles3719
Hey all,
Sorry for YAFRBP (Yet Another F... Rod Bearing Post  )
I am about to go through the fun and games of bearing replacements with my mechanic doing an engine out main+rod bearing job becaue of finding this during a routine oil change (1500 kms after I bought the car w/92,000kms... so FUN and games right there hey)
Getting pictures but after pulling the rod bearing out (ACL Race bearings) we found they were 'worn but not coming apart and not spun. So then it was suggested to move onto the mains and check those. So with the main bearings out (King Race bearings - need to try and determine p/n of them) we found that the main bearings showed somewhat uneven wear on the closest side to the chain. Appreciate that without pictures that is nigh on useless information but i will get more when the pics come.
So we sat down and since the engine is out on a stand decided to replace the rod bearings with BE Bearings + BE spec bolts w/ King pMax blackrace bearing (MB5803XP STDX), basically the same combo that M539 used and measure everything to see if its in spec since BMW have different main spec bearing colours and aftermarket tend to just have a standard 'set' size and you pick.. STDX in my case.
So getting to the point (finally), if the glitter in the oil does not appear to be a self destructing bearing, what else could it be? The kicker here is that its been communicated to me that about 3 owners ago (and 25,000kms) ago, the bearings were replaced which leads me to beleive that is true given they're obviously not OEM so at some point they were done and i dont [...] |
Thinking of it in terms of color, what’s in the engine that is gold or brass….
Leftover foreign debris from the prior bearing job
Does your oil pan have a timesert thread insert installed? It’s brass colored
Vanos device, timing chain and sprocket - you would have seen these during the main bearing job
There’s not much else that is that color. Let us know what you figure out