04-28-2019, 08:25 PM | #67 |
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Anyone thought of swapping to a 335 engine instead? If the job is 3k isn't a 335 engine around 5k and not prone to this problem
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04-28-2019, 10:47 PM | #68 | |
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You need to do a little research before running your trap around here. Lot's of us waiting to call you out. I wont even comment on your ignorant thoughts regarding oil changes. But... There is no such thing as OEM metal guides for the N20 motor. Also- the only part number to change was actually the chain. Not the guides. What an idiot. |
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04-29-2019, 07:48 AM | #69 | |
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With the level of ignorance in his post, I'd imagine it's an intentional troll. In case not and his ignorance is genuine... A manufacturer recommended OCI is not proven safe/reliable simply because the manufacturer issues a warranty for a fraction of the cars life. In fact, BMW proves this by revising their recommended OCI after their engines begin to fail from sludge build up etc. BMW is not very concerned with what happens after their warranty is up. Especially considering the majority of their sales is in leases. I don't recall anyone here saying the chain is the sole culprit. However, I am pretty sure BMW did revise the oil pump chain (and possibly the timing chain as well IIRC) which were both suspected factors. But yes, the most notable issue overall is the plastic guides breaking and clogging the oil pick up. Lot's of variables at play. Regarding the metal chain guide...I'd love to see a part number compatible with the n20. Feel free to enlighten us.
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04-29-2019, 07:51 AM | #70 | |
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Regarding the metal chain guides, let me save you from waiting: they don't exist.
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04-29-2019, 09:52 AM | #71 | ||
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As far as my statement on oil changes you can say I'm ignorant all you want but I'm not some internet, weekend shade tree that has no idea. Companies are about liability and if a damn Dodge Charger can go over 8k between changes with no issues into 200,000+ mileage I'm sure BMW's 12k interval is ideal. If a manufacturer recommends a service interval and it is found to be incorrect, even beyond the warranty and leases they can still be found civilly liable. I am trying to find the NHTSA reports that I found when I 1st purchased my 328 and did some research. When I do I will be more than happy to post them to show that the information I gave was from a reliable source.
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04-29-2019, 10:08 AM | #72 |
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NHTSA ID: 11102686 indicates the failure due to the plastics guide
NHTSA ID: 11102348 indicates that the failing plastic part was replaced with a metal one in 2015. (Again if this is just metal reinforced it does not specify) It will not allow me to copy and past the whole article so feel free to go to the NHTSA web site and read for your self. There are 35 engine complaints submitted to the NHTSA these are just 2 examples of the major engine failures.
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04-29-2019, 11:50 AM | #73 | |
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Well, my story keeps getting better. Just received the following email from my SA:
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05-02-2019, 07:47 PM | #74 |
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I just received an update from my SA.
“One piece of the plastic guides was snapped and the chain was stretched causing low oil pressure faults.” So it does not look like my chain failed completely, it was just stretched. I’d be curious if that is the determining factor in whether the entire engine vs just chain/guide needs to be replaced upon failure. |
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05-02-2019, 09:07 PM | #75 | |
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Stick to working on tractors. |
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05-02-2019, 09:48 PM | #76 | |
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Considering the N20 is interference.... When the engine jumps timing, the pistons and valves will be off schedule and bang into each other in violent fashion. If the engine loses timing and is not shut off IMMEDIATELY... its toast. Non-interference motors do not have this problem. |
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05-03-2019, 05:47 AM | #77 | |||
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All self proclaimed qualifications above have equal value on an anonymous forum. Furthermore, any amount of unrelated experience means nothing when attempting to apply it with ZERO actual experience and knowledge on the specific scenario at hand...rather using blanket observations. Quote:
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Don't come to this forum (or any forum) with your anecdotal "experience" assuming you know more than everyone or anyone.
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05-03-2019, 07:35 AM | #78 | |
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I don't know how you can unironically suggest that a 12k mile OCI is just as conducive to low long-term engine wear as is a 5k mile OCI. It's just silly. BMW's by-the-book service recommendations are designed to make them money, not keep your car running ideally for as long as possible.
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05-10-2019, 12:33 PM | #80 |
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05-10-2019, 03:37 PM | #81 |
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I don't think B46/B48 is affected by the timing chain issue. I would hope BMW would have learned after the N20
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05-16-2019, 04:32 PM | #82 |
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Here's my chain. Looks like some scoring on the sides? or is that normal.
71k miles, 09/2012 build 328i
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05-16-2019, 06:17 PM | #84 | |
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05-18-2019, 07:22 AM | #86 |
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so anyone ACTUALLY pony up and hire an Indy to do this as preventive maintenance.
Not to be negative but this thread is kinda turning into the other dozen we have on this subject. reasons WHY we think it happens...peoples experience getting it repair via dealership, etc. Would really like to start seeing some costs and shops around the US that have successfully done this before any issues come up and simply because the owner wanted to nip it in the butt before hand. |
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MacklinUSOB519.00 F30bih12.00 |
05-21-2019, 02:37 PM | #87 | |
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If someone comes with the design of this add-on, it will be in demand. And the procedure will be simple - drop oil pan, plug in the add-on, reinstall oil pan. ---------------------- Edit: OK, looks like standard suction pipe already has that coarse net in it. Then how the hack plastic parts block it? I understand they may obstruct some oil flow, but not all. Maybe that small circular area just needs to be enlarged? Making it bigger will let enough oil in even with some blockage. Last edited by F30ed; 05-21-2019 at 03:12 PM.. |
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05-21-2019, 07:18 PM | #88 | |
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