02-01-2020, 11:24 PM | #23 | |
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02-01-2020, 11:29 PM | #24 | |
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I'm surprised to hear a dealer replaced an engine with meth injection, I would think that would similarly "void" the warranty and give them an excuse not to pay. |
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02-02-2020, 10:11 AM | #25 |
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Might be helpful for some...
Check out this teardown of the b58tu. Around 9:40 you can see the internal bores of a virtually new engine and there appears to be some very slight “scoring” lines. I think this issue may be overblown. I also think some of the bright lights on the borescopes may be highlighting some natural wear marks making them appear much worse than they actually are. If compression, leak down, and oil consumption levels are all within check I don’t think there is much to worry about. Typically proper scored cylinders like those in a lot of 90s-2000s Porsche’s exhibit excessive oil consumption and I haven’t really heard of any oil consumption issues on this board. It is possible that all of our b58 engines look exactly the same but they haven’t been scoped because they run great and there is no need. Think of how many bmw’s have this engine. If it was a widespread issue, you think we would have heard about it by now? |
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02-02-2020, 11:16 AM | #26 | |
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Last edited by PURE340i; 02-02-2020 at 11:21 AM.. |
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02-02-2020, 12:14 PM | #27 |
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There are tons of "scoring threads" on this forum, mentioned on tuned and stock engines. Am I going to dig it up, nope, but feel free to use the search button.
The reality is it is highly likely that all of our engines have scoring issues, but nobody scopes the cylinder unless there is a failure. |
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02-02-2020, 12:16 PM | #28 |
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It is highly dependent on the dealer. Some are mod friendly, some are not. Yours was not, and your VIN got flagged.
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02-02-2020, 12:44 PM | #29 | |
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02-02-2020, 12:48 PM | #30 | |
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I believe they can see when the DME was flashed (not sure though), negating any arguement that it was the previous owner. |
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02-03-2020, 04:49 PM | #35 | |
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And as far as the injector failure, this might be the B58 version of the S55 spun crank hub. Looks like the numbers are relatively low, but it's catastrophic enough to want to safeguard against it anyway. |
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02-03-2020, 04:58 PM | #36 | ||
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02-03-2020, 05:40 PM | #37 |
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Dont know if this points to anything or is significant, but when I was searching for replacement injectors on dealer websites the page shows:
P/n: 13-53-8-625-396 Replaces p/n: 13-53-7-639-990 Does this mean the early b58 injectors needed a revision and it was just never stated publically? Why else would there be a replacement p/n? |
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02-03-2020, 07:24 PM | #39 |
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cost is pretty high for P/M. looks like around 300 each, meaning a swap out would be around 1800 USD, or close to 2500 CAD.
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02-03-2020, 07:29 PM | #40 |
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Interestingly mine has 13538625396 fitted, did yours have 13-53-7-639-990?
That alone would be good to document, also id like to know what kinda fuel you had been running, and if always serviced ect and if any injector treatments used? |
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02-03-2020, 07:29 PM | #41 | |
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There's only 1 injector listed: the xxx396 ones. What did change was the high-pressure rail. Hmmmmm. |
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02-03-2020, 07:30 PM | #42 |
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What oil were you running when your car had its issues?
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02-03-2020, 07:35 PM | #43 | |
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Drives: G81 M3 Touring, GR Supra GTS
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My car is Feb 2017 production and has 13-53-8-625-396 |
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02-03-2020, 07:44 PM | #44 |
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might be a totally different chassis also... my 04/16 production has the pn 13-53-8-625-396 listed in realoem with no previous revision.
edit: https://www.realoem.com/bmw/enUS/par...90&series=F30N
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Last edited by Rockyca; 02-03-2020 at 07:50 PM.. |
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