BMW N55 Teardown - You Won't Believe What I Found
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- Опубликовано: 20 окт 2024
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I took my knocking BMW N55 engine apart to see what was making all of that noise and what I found was way worse than I ever expected or seen. There were so many broken pieces in in this engine that I bet my BMW 335 wanted to cry after being in the same garage! This teardown has been fun so far as I've never expected what I found and that makes it exciting to work on. It may not be a savable engine at the end, but I sure will take it apart and find all of the issues it has caused itself. So far I have taken the front axle differential and the support bearing off, removed all the oil pan bolts and then removed the oil pan itself. To investigate further, I removed the oil pick up line and the oil pump as well. We were finally able to see parts of cylinder one and the most likely rod knock and destruction it left behind. Part 2 coming soon to investigate this engine failure further!
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This was super interesting to watch
The discoloration on the crank is a dead giveaway that oil stopped flowing at some point. With the amount of heat that poor crankshaft had to endure, it's now out tolerance in just about every dimension, it's toast. Probably though, something happened prior to the oil starvation. Where you running funny boost numbers or a tune? Tunes usually have overboost and ignition timing pull disabled...for maximum power. I other words, the engine can't protect itself.
It's incredible that this thing still starts!
I couldn’t believe this ran!! I drove in the garage!
Love the cardboard idea, wish I did that when i took the oil pan off my blown N20. I suggest you download/back up whatever steps you need from newtis since it might go down for good really really soon- the domain is already seized.
I'm amazed how the metal disintegrated- looks like plastic lmao.
Your channel has been such a huge help for my engine replacement on my X3, so thank you so much brother. Much love.
I got the new engine in and i'm trying to figure out a lean code, so smoke machine time it is. If you're ever in NYC i'll buy you a beer haha
I tried magnet organizers etc, but the cardboard trick works best for me, glad you like it too. As far as the newtis, I have backups of what I need :).
I was in SHOCK when I took the oil pan off. I'm not sure how it came off on video, but I just not expecting it to be like that or have that much damage. I'm glad you are finding the videos useful, I love comments like this, keeps me wanting to record stuff when I do my projects. Cheers!
Aluminium bolts are single use as they stretch and must be replaced, but this method will give you a positive clue where the new one's go though!
I watched part 2 first and wow, this is a lot worse than it looked from the top end! Great vid
Thanks for watching!
Give serious consideration to swapping in a B58 in its place. You can pick on up for under $10k with low mileage and it’s a much better engine than the N55.
I'd love to do that, but the amount of wiring loom and other modifications needed would be outside my knowledge zone.. unless there are some conversion kits for this. Great idea, though.
What do the other rod bearings look like mate? By the way i think she is toast. i just junked an N55 with only a spun bearing. Shame i am in Australia because aside from number 3 big end the engine is perfect...
The other ones look just fine as far as I can tell. They may not be perfect and I'd replace them if it was worth rebuilding this engine, but they are fine. I'm afraid you are right.. at this point I'm just taking the rest of it apart to see exactly what blew up.
I ve read and heard that the plastic thing that sits by oil pump can crack and you can loose oil preassure. Why the f BMW made such important thing out of plastic...
What brand engine oil do you usually use? How often do you change it? Do you warm up the car properly in the morning. What mods/tune you have on the car? I have an n54 and 2011 n55 and maybe I should start thinking about selling these cars lol
I got this car with the problem as a project. So, while I do all the correct things on my cars as far as oil etc, this one was abused by someone else.
@@SimpleCarGuy I see sounds good. You should be able to find an engine for couple grand though.
Yea sell them asap and buy an amg
How did that engine get to that point?
Lack of oil change or no oil?
Got the car at auction with blown engine.. soo I don’t know!
I hope you can find out the reason the piston in cylinder 1 pretty much exploded.
Waiting on the timing locking tool! As soon as I have it, it should take me 15 minutes to have the cylinder head off. I have no idea what expect after seeing the bottom of the engine.. will those valves be intact? We will see soon!
Crankshaft looks overheated. You will most likely need to crankshaft
Get a new engine.
I have been looking for an engine and can't find anything for a decent price. Found one a few weeks ago and they sold it a day before I called them.
Ebay?
@@driftergonewild I don't really trust eBay, so I've been gong through my dealer friend that has access to the junk yards etc.
Maybe an extreme solution but what if you buy a wrecked car that has the engine? Pull the engine part out everything else.
You have to replace every aluminum bolt you remove. It's mandatory.
You're absolutely right! I plan on doing that when re-assembling.
Did you disassemble the vanos sprockets? Any info on the proper orientation they should be in when being fitted back on the engine for timing?
You will need a timing chain tool to time the engine. You won't be able to install it by eye and have it run properly (most likely self destruct if it's off time enough). Here is a full video on Timing Chains: ruclips.net/video/-apNebfNCMA/видео.html
@@SimpleCarGuy I have the timing tool. The box it came in has two horizontal bridges for the vertical hook pillars that hold the camshafts in place. Of the two horizontal bridges, one black and the other golden greyish (which has N55 written on it), I have tried using either at different attempts of setting the timing. After torquing the cam bolts and replacing the pretension tool with tensioner, turning the engine to ascertain if the timing's correct returns futile, as the intake cam sprocket particularly starts rotating to some degree before the rest of the camshaft(lobe section) joins in the rotation. As a result, timing is off.
@@SimpleCarGuy my question is, do the cam sprockets need to be in their locked positions for the timing to be set properly?
PS I have replaced the intake cam sprocket already. Got it off a written-off car's engine.
@@SimpleCarGuy Or you could let me know what I am missing.
Should never let it upside down.
Very informative though😀
This is an xdrive correct?
That’s correct!
It'll never be a thing of joy.... Salvage what you can and get it out of your sight as it's a painful thing to look at....
Once I heard the clunking noise when I was flipping it up side down, I knew it had to be bad. Could not expect it to be THAT bad, but I will still take it the rest of the way apart and see what the cylinder head and valves look like. I'm not in a hurry and it's fun tearing things down. Hope to sell the good parts after I'm done.
@13min Where do you see a rod bearing?
You're right, I later realized (top end teardown video) that the bearing stun and was smushed together with the connecting rod bearing.
OMG... how did it even run... it’s completely detonated itself.
I have no idea.. I guess all of the metal collected in the bottom and the remaining 5 cylinders did the job. It's almost hard to believe!
“What the hell is even that”
Trashy people have trashy cars... insult to the amazing German engineers for this careless owner of this amazing N55 engine!
You thought you were going to be able to fix an engine that windowed the oil pan with a rod?lol I am an N55 victim too but mine just had a slight rod knock and I wasn't interested in fixing it. I feel for you with the AWD brother!
Well, I could still fix it.. it would just cost too much. I'm not really doing this for profit or resale, I do this for fun so there was a lot to consider. Thanks for watching!
@@SimpleCarGuy Dude, I just read that again. I didn't mean to sound like that much of an ass, sorry..
@@Headsup9550 No problem at all! All in good fun.
no engine builder expert but don't the journals look like they got real hot with the discoloration? That's what i found on my old 7m engine that ran low on oil and spun a bearing.
I noticed that as well, just didn't mention it in the video. I'd have to guess that it ran low on oil or something similar. I have never seen a 80000 mile engine apart to compare it to, though.
What year and how many miles?
2011 with ~ 90k miles.
After watching this video my blood pressure went all the way up...😔😔😔😔
I felt about the same way after opening it up :]
there is no rod bearing there bro
Yeah, it spun and on the other side!
no way that engine could be rebuild ...
It couldn't, but I used some parts from it to rebuild a used engine I got!
You don't reuse bmw aluminum hardware
That's correct, I wouldn't reuse the bolts. It is still good to know which bolt goes where for when you get your new ones. Thanks for watching.
👍🏼
$300-$500 bucks and a month of your time? Buddy you’re going to need upwards your 10k and 6 months of your time if you even think about rebuilding this 💀😂
I looked into the parts I would need to make it work and that would be about $2500 if I got used parts. If I were to build it up and put stage 2 pistons and upgraded turbo etc., then your $$ makes sense. At this point I have decided that it's not financially smart to do so and have been looking for replacement. Thanks for watching!
Your wasting your time with the cardboard on oil pan - one time use only bolts lol
True, but much easier to know where each bolt goes when putting the new ones in.
@@SimpleCarGuy Yea , you're right, I didn't realize they vary so much in size. I replaced Oil pan gasket on n54