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BMW 3-Series (E90 E92) Forum
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HELP!! Possible N55 Engine Failure! VIDEO!
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05-21-2017, 12:38 PM | #23 | |
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Might be broken valves or rocker-arm assembly or camshaft - much easier to repair, but a piston may have been hit, which might affect the bottom end, too. This is why JB4 and other mods are known as "pay to play". |
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05-21-2017, 12:51 PM | #24 | |
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05-21-2017, 08:51 PM | #25 |
Curmudgeon and Pedant
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In both cases, you will have the $4K labor charge to R&R the motor. Parts, labor, machine shop, etc., you're talking at least another $2K (probably much more.)
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05-22-2017, 06:38 PM | #26 |
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Just got quoted 7.2k in labor (45 hours). Thats w/o parts. With parts it's close to 10k. Used engine is the way to go.
I just picked the car up today from the shop who gave the diagnostic and the cars not making the obnoxious loud metal on metal noises as seen in my video. Werid.... |
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05-23-2017, 05:05 PM | #28 |
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Yeah it's fucking crazy. This car is driving me nuts man. I feel like one of the two shops I sent it too messed with my JB4 connects. JB4s steering controls don't work and on top of the ECU cover there's a piece of tape with 6.2 L and 6.5 Q written on it. Don't know why or who put that on. Like I said that noise is gone as seen in the video but the car idles soo rough. Plugs arent due unitl 7k more miles. Still have the half engine light. I'm sending it to one more shop next week to see what they say. Car is making me go crazy.
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05-23-2017, 07:13 PM | #29 |
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I was troubleshooting my JB4 with Jon over email and I have to send in my board for them to test it. Doesn't look like it has anything to do with my engine sound. But it might give me the half engine light right?
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05-25-2017, 02:29 PM | #30 |
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Sounds pretty much like this N54... https://www.instagram.com/p/s-YmFrMAjI/
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05-26-2017, 03:34 PM | #32 |
Clean is the new cool, keep it that way.
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Sucks man, it will be interesting to see what they find if you have it torn apart. I have have poor experiences with piggy backs on boosted applications, which is why I went MHD on mine.
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05-29-2017, 10:31 PM | #37 |
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06-01-2017, 12:53 AM | #38 |
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I'm having a similar issue that I can hear knocking from the engine that's more apparent around 2-3000 RPM's. I just took it to a BMW indy shop and they said it sounds like a rod bearing but they are gonna do some tests on it tomorrow to know for sure. They did tell me that if it is a bearing or something like that it would be more cost effective to get a used motor. They said a motor with 40-50k miles and a 6 or 12 month warranty on the motor and labor would run about $9k grand total installed. I don't know if the new motor would come with the manifolds or turbo though; I would think it would be better to replace the turbo in case of any metal flakes getting in there from the oil. Let me know what you end up doing OP
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06-01-2017, 04:21 PM | #41 |
Clean is the new cool, keep it that way.
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I'm not sure if it's cool in SF right now or not, it could just be condensation in the oil. But a $28.00 oil test would tell you a lot.
http://www.blackstone-labs.com/free-test-kits.php Last edited by 9krpmrx8; 06-02-2017 at 07:16 AM.. |
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06-02-2017, 12:54 AM | #42 | |
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06-16-2017, 08:05 PM | #43 |
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Update: I sourced a rebuilt N55 engine from a engine re-builder on eBay. The rebuilt engine cost $5350 including a $1000 core charge and a $350 freight charge. Honestly anything could've caused this engine to knock. It's not worth trying to figure it out but I think my belt that shredded and entered the front main seal is the cause of my engine failure. I sent it to an indy who dropped the pan to clean all the belt material and get a new gasket. The belt pieces made it's way up to the valve cover via the timing chain which still has debris in it sadly. What I've learned from this whole thing, never let your OFHG leak and to always service your belt. At the end of the day, a $500 job that I should've done sooner would've saved me $7.5k :\
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