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03-24-2020, 11:23 AM | #1586 |
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So now that these are becoming preventative maintenance items, when are people doing these?
I see mileage all over the map. Mine is a 2013 6speed and I have about 37000 miles on it. I was thinking of replacing before 45k just for peace of mind. I don't put a lot of miles on the car anymore though so that could take a while.
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03-24-2020, 11:38 AM | #1587 | |
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My car had several owners before me and I wasn't sure of it's history so I elected to just do them. They were mostly fine but I wanted the peace of mind. There are some very high mileage cars with no issues...yet. Some think that it'll destroy the engine given enough time though. I don't gamble in real life much so just said screw it and had them done.
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Alpine white, ZCP springs, AFE intake, Black ZCP wheels, Borla ATAK. BE bearings/ARP bolts 02MAR2020@ 60k. 2001 Ford F250 crew cab long box 4wd Diesel 6MT 1968 Impala Convertible, original owners |
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03-24-2020, 11:47 AM | #1588 | |
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03-24-2020, 01:29 PM | #1589 | |
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Every one of my road race cars sits outside over winter and every spring I put the batteries back in and start them up. No worries. Only winterizing that gets done is fuel stabilizer and antifreeze. Water is put back in for race season (coolant is slippppery as goose sh!t and not appreciated at the track). Happy motoring!
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03-25-2020, 12:29 PM | #1590 | |
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03-25-2020, 07:57 PM | #1591 | ||
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Btw, thanks for adding the oil report to bearing photos , I will add you to my oil analysis collation thread (see sig if you're interested). Quote:
BE bearings aren't the only show in town btw, ACL apparently do decent bearings too, although they're not normally supplied pre-measured like BE ones.
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. Last edited by Assimilator1; 03-25-2020 at 08:17 PM.. |
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03-25-2020, 08:41 PM | #1592 |
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All bearings are supposed to be within the manufacturer’s tolerance. BE measures them again, which is may be worth paying 3 times the cost if you don’t trust the manufacturer and cannot measure yourself. When I changed mine in 2014, I simply bought a new set from BMW and installed them without measuring the bearings or using plastigauge to hopefully get a clearance measurement.
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03-25-2020, 09:11 PM | #1593 | |
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I'm going 60k-80k on mine. Basically 80k max, but as early as 60k if another project comes up that'd involve taking apart the front suspension or something. Only way I'd go earlier than 60k is if oil analysis suggests. Bought my car with 80k and did the rod bearings shortly afterward. One or two shells were just starting to show copper, so I could have gone a bit longer (though I'm glad I didn't). Went with updated OE bearings and OE bolts. |
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03-25-2020, 09:19 PM | #1594 |
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I agree with making the interval for the 2nd change based on what you see at the miles of the first change. But engines seem to wear differently and what one person sees at 80k does not mean everyone else should expect the same. The person with the engine that blew at 6k would tell you that. You can also roll the dice. Most of these cars are still driving on their original bearings regardless of mileage.
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03-25-2020, 09:28 PM | #1595 |
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Again, completely agree that engines have failed with low miles. The point is, those are outliers.
I picked 60k-80k based on what I’m seeing here and elsewhere, plus the recommendation of my shop. |
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03-25-2020, 09:35 PM | #1596 |
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That works if you are happy with average results and are willing to take the risk of being more or less than average. You would not make a good insurance salesman.
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03-25-2020, 10:36 PM | #1597 | |
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BMW nominal is too tight. Go with BE or VAC or ACL and be done with it.
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03-26-2020, 05:51 AM | #1598 |
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True, assuming the lack of clearance theory is the correct one. Once we have a bunch of increased clearance bearings come out at 50 to 100k miles and show no wear, we can be confident the theory is right. Until then, it’s just the most popular theoretical explanation as to why there have been so many rod bearing failures.
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03-26-2020, 05:51 AM | #1599 |
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03-27-2020, 07:00 AM | #1601 | ||
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Aside from the current C19 crisis, why wait? Small chance of blowing, but large cost if it does.
Quote:
Just HXs are a little too much clearance at the upper tolerance range that I'm comfortable with. *Although Redish motors have measured dozens of engines with plastigauge & have found them to be a decent ~0.050mm clearance (bar one). Quote:
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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03-27-2020, 07:49 AM | #1602 |
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M3 2008 6MT
71,000km 44,000mls Brazil (1st picture is upside-down, don't know why, but in the original file it's not) |
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03-27-2020, 09:55 AM | #1603 |
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03-27-2020, 03:12 PM | #1604 |
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Yep!
And excellent quality close up photos! Which bearings did you have installed?
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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03-29-2020, 07:38 AM | #1605 |
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Hey doogee, their are tonnes of rod bearing photos in this thread, any chance you could add the link to the op?
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Oil analysis for finding wearing rod bearings?. Collation of oil analysis reports with some rod bearing photos for the M3's S65. My categorisation of pulled rod bearings in the rod bearing condition thread. My updated 'Blown engines' list. |
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03-29-2020, 10:26 PM | #1606 |
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