We have a machine in the lab at work for measuring just this
It will not be seeing any oil though as it is for food colour that goes in coke beer and whisky to name a few products we make colour for
We have a machine in the lab at work for measuring just this
That's a shame! What if the boss is out?
Not very often, but that's a fair point.
No he isn't and neither are you, bearings that can wear out in as little as 50k, whether an M engine or not are something you should be concerned about. If your not concerned, fine but bad advice is still bad advice.R60BBA wrote: ↑Mon May 16, 2022 11:23 amMeh, he’s right. They are not as much an issue for S54’s than they are for other M engines such as the S65.grannyknot wrote: ↑Fri May 13, 2022 9:10 pm Make sure you show those bearings to your to regular guy, he needs to stop saying that about s54's. Looks like you got them just in time.
Bearings can last 200,000+ miles as long as the car is looked after (ie regular oil changes and the car is warmed up properly).
I went for King Race bearings
That's because most people here hardly do any miles (usually less than 10k miles/year), and/or usually flip the cars relatively fast. I mean people that hold on to the same car longer than 10 years are a minority on this (and most) forums.
While this is true for a "normal" engine such as an M54, it's shouldn't be a blanket statement, especially for the S54. Mine has had it's oil changed regularly (every 3k-5k miles) and don't go past 4k rpm until car is properly warmed up. However, my oil analysis showed 15ppm average lead level since I started doing analysis at around 22k miles. Lead level dropped to less than 2ppm after bearings changed at about 55k miles. This steer me to believe that my bearings weren't properly installed (torqued) from day 1 at the factory. My car was built on March 2008, which I thought should be the latest and greatest iteration. I was obviously mistaken for making that assumption. I suspect many later S54 are the same, which is why I have seen worst bearing wears on S54 Z4M than those final E46 M3.
This is true. Z3M/Z4M are usually weekender/garage queens. I know of a couple of E46M3 owners that are into their 3rd sets with 200k+ miles
I am planning on getting mine done for the 2nd time very soon. It'll be interesting at the least to see what they look like, ~35k miles, I'd say at least 30% of those spent north of 5k rpm using the full 8k.
Bad installment will give a different wear pattern than the usual wear pattern.