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03-06-2021, 09:53 PM | #2091 | ||
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03-07-2021, 08:01 AM | #2092 | |
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03-07-2021, 02:11 PM | #2093 |
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Back in the days, as in older cars? If so they probably didn't have stretch rod bolts.
Depends when you mean and what cars
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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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03-07-2021, 03:05 PM | #2094 |
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No, incl S65 and S85. Mentioned local shop I mentioned are viewed as ///M experts in the Stockholm area. Didnt use them though cause didnt feel comfy.
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03-08-2021, 01:27 AM | #2095 |
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Ah ok, interesting. I always thought re-using stretch bolts was a big no-no!
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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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03-08-2021, 06:53 AM | #2096 |
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You are not supposed to reuse TTY rod bolts. I reuse some bolts that have angle torque specs like those for the front aluminum plate that stiffens the suspension, but I would not take the risk with rod bolts. If you were going to do it, you should measure for stretch against a new stock bolt.
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03-08-2021, 02:35 PM | #2098 |
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I assume you need a hole in the rod on the threaded end to place the gauge to the bolt?
I don't suppose you've got a pic or link to hand to show how it's done? (never seen it done myself). And assuming you could measure OEM rod bolts in situ, would you reuse stretch bolts?
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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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03-08-2021, 02:57 PM | #2099 | |
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I would think measuring stretch on a previously used rod TTY (stretch) bolt would be pretty meaningless because the bolt has already been to the point of yielding. |
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03-08-2021, 05:14 PM | #2100 |
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'12 E92.
Just replaced. As far as I know these are OEM, I bought the car in 2014 with 40k on the clock. Now at 95k. Includes around 40+ track days since 2014 and I changed oil every 5k miles. |
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03-09-2021, 11:06 AM | #2102 |
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I just got my rod bearings replaced. Replaced with BE bearings and ARP bolts, BW performance motor mounts.
2008 E90 6MT 97k miles Bought the car in 2015 with 51k miles. Car has only 3 track days.
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03-09-2021, 03:06 PM | #2103 | |
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Thanks for the link btw, excellent quality photos! More likely down to the luck of the S65 lottery, that and LCI bearings generally coming out looking better than the earlier type. Do you still have your old bearings? And if so, would you be interested in doing a little experiment on one of them?
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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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03-09-2021, 11:09 PM | #2104 |
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03-11-2021, 04:18 PM | #2105 |
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Went with BE bearings, and BE ARP bolts. The car has had two previous owners before me. Original owner changed oil every 5k miles, and sold it to carmax with 12k miles on it back in 2016 I believe. Second owner bought it in 2016 with the carmax warranty, did oil changes every 6k miles, and took it to autocross and track days. I bought this car in January of 2021 with 42k miles. Decided to get them done now since the warranty is coming to an end this april.
2013 e92 m3 6 speed manual 45k miles today. Last edited by jamabdi; 03-17-2021 at 05:33 AM.. |
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03-11-2021, 07:02 PM | #2106 |
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Saw this from FCP Euro where a 300,000 Mille Volvo motor was torn down. Bearings looked better than just about every set in this thread.
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03-12-2021, 12:15 AM | #2107 |
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03-12-2021, 08:38 AM | #2108 | |
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Just look how wide (heavy) that rod assembly is at the big end. Lots of area to help the oil film do its job.
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03-12-2021, 11:31 AM | #2109 |
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rod bearing change on a new to me 2008 at 122k
had a big scare at first with what appeared to be chunks in both oil pickups. turned out to be a dye, thankfully. still very interesting how exclusive the wear was to the top front shell halves. |
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03-12-2021, 01:39 PM | #2110 | |
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03-12-2021, 01:45 PM | #2111 |
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Wow! A couple of your shells were really bad! (Was their any lead left on them??) 1 and 5 uppers, curious it's on the same pair....
Oh and all your close ups of the oil pick up are out of focus
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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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03-12-2021, 04:32 PM | #2112 |
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84k just taken out and replace with BE bearings
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