Full BMW N55 Engine Rebuild in 29 minutes
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- Опубліковано 7 січ 2023
- In this video I rebuild my BMW N55 engine. You will see the entire process from the beginning to the end.
The original engine from the car was completely destroyed inside and not rebuildable, so I had to source another N55 engine and continue my project that way. I then used parts from both engine and bought many, many new parts to build an engine in my garage and at the end you have the final result.
What does it take to rebuild a BMW engine?
This all started when I bought a BMW 335 with a blown engine. After taking it apart, I realized that it was not fixable, but luckily shortly after I found a $300 engine locally which was rebuildable. This is that process.
Parts used: amzn.to/3QTT1YT
Tools used: amzn.to/3SXwywS
I can’t believe that it’s been almost 2 years since I rebuilt this BMW n55 engine. I made a 10 part series with many details and step by step instructions, so check that out if you are doing it yourself. This video is more about showing the entire process in only 29 minutes in case you want to rebuild a BMW engine yourself.
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BMW N55 Engine Rebuild Project:
Part 1: • I Bought A Broken BMW ...
Part 2: • Piston, Crankshaft and...
Part 3: • BMW Rod Bearing Replac...
Part 4: • Cylinder Head Gasket R...
Part 5: • Timing Chain and Oil P...
Part 6: • Valve Cover Gasket & O...
Part 7: • BMW N55 Injector Insta...
Part 8: • Front Crankshaft Seal ...
Part 9: • Engine Install and Ass...
BMW 335i M-Sport Project Playlist:
• BMW 335i Coupe
______
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THANK YOU for not adding any music! Allows viewers to concentrate on what you are doing. Great stuff. I am learning more about BMW engineering by seeing these things. I'm surprised you didn't do more cleaning of the valves and intake chambers.
I wanted a more mechanical, raw videos, so I'm glad you liked it! I did some cleaning on the valves and the intake chambers, but I couldn't get to everything without a proper parts cleaner booth. It's been running pretty smooth so far, though!
Did it cost more to rebuild than just replacing with a spare motor
@@1ROWDY35I think he mentioned it took $3k to rebuild. I am not sure but in $3k you would get an engine that’s at 300kms I think. Rebuild would be a brand new engine so yeah
15:27 what tool is that?
@@Saywhatohno yea if your gunna rebuild may aswel forge the whole thing
So relaxing watching this.... better than 90% of the other craps on social media. Thanks!
Glad you enjoyed it! I like watching these kinds of videos myself so figured I give it a try.
Just realised it’s soothing to make you sleep when you can’t
This is car guy ASMR
Incredible video. I remember watching the individual parts and that was cool, but as someone that probably will never rebuild an engine, I watched this one all the way through and thoroughly enjoyed it.
Glad you enjoyed it!
Every second of the video was so satisfying to watch, great job! Greetings from Switzerland!
Glad you enjoyed it!
Thank you for documenting this and sharing with us.
Always good when you watch someone and they say or write how hard to tight that bolts, for example head gasket or oil pump. Good work man well done 👍🏻 ✅
Thank you for uploading these helpful videos. Got my new used N55 motor in and resealed with new bearings following your instructions.
Great to hear! Thanks for watching!
This was fantastic, I have a 2014 F34 with an N55 that I was figuring was going to be the first engine I tried to do some or most of the rebuild on myself. Now after watching it, there are some more special tools to add to the kit, but it wasn't that horribly threatening. Thans!
Excellent video. Fascinating to watch.
nice video and thank you for put this up
Amazing job!! Thanks for sharing.
incredible video, nice job showing all
Done well do far except the bedplate sealant, the proper way is to install and torque the bedplate and then install the front and rear seals, then use the syringe and push the sealant through the channels in the side of the block
Great work!
Cant believe I watched the whole thing. If I had any knowledge of doing a rebuild I would
What a cool video! Very impressed at your determination and bravery to do all this yourself!
Thank you so much!
It ain't brave if you know what you're doing. This guy is skilled, not so much brave
Awesome video. My 2015 335 has a rattle after shredding a drive belt from a leaky oil filter housing! Wish I had the skills to rebuild myself too.
Hope it was worth it the N55 sounds amazing 🎶
Wow. I wan to learn this to be able to fix my own car.
A master in his own craft
Masterpiece.
Great video!
So much work.
This was like therapy
this was extremely satisfying to watch! I feel like I can undertake an N55 build myself now! (maybe) lol
Good luck! It’s a long process, but you learn a lot along the way
Amazing video .
Could you show or add / send a link to where you found all the torque specs please! I’m in the process of putting my engine / subframe back together and I can’t finde torque specs anywhere…. Thank you!
good work!
GOOD JOB 🙋
Thanx for the video i subscribed your video is the best than others
Thanks for the sub and for watching
Dude wanted to say thanks got my n55 out today thanks for you help. Ps I am a certified mechanic so im used to wrenching and have tools
Glad I could help. Thanks for watching! How's the progress?
Thanks for the reply. Progress has slowed because my crankshaft would not turn well once torqued the bedplate. Machine shop has crankshaft and they say it is fine, I have identified 004 in of runout on the crank. Your crank was bent also right? How did you remedy this?
Thanks for watching!
I spent 30 days selling BMW N20 parts, *was it worth it*? ua-cam.com/video/SNI85pw4_tk/v-deo.html
If you'd like to see detailed video for each part, check out the *BMW N55 Engine Rebuild* playlist: ua-cam.com/play/PLfGJyGAcNr7-J2rSmmcNcQIT0QIvi2jCL.html
If you'd like to see how it all started, check out the *BMW 335i Project Car* playlist: ua-cam.com/play/PLfGJyGAcNr78Xbwh-kwd90uoDwGM3qr57.html
Parts used: amzn.to/3QTT1YT
Tools used: amzn.to/3SXwywS
Nice Video my friend.Greetings from Serbia.
Astonishing.
Great wotk... Just one question you prepared the whole engine but why you did not check and have a look on the other pistons and thier rings... Just replaced the the damaged one
Nice job !
It's great to discover/learn more about our engine architecture. (here for me, injector seal replacement and installation. Never seen this before in any video) )
Why you didn't tackle some other weak points of the N55 during this rebuild ? Cost maybe ?
I'm thinking about the water pump (more difficult to replace while the engine is installed in the car)
And install a protective plate behind the harmonic pulley to prevent damages if the serpentine belt is escaping.
Finally, what is your exhaust ? It's sounds no sweet to my hears. Love it.
I mainly did this to learn exactly how engines work and to challenge myself to see if could do it. The cost was definitely a factor as I ended up spending basically the same as it would cost to buy a used engine (although with 90k miles). The water pump was placed less than a year before I got this car, so figured there was no reason to spend $400. The protective plate; however, was something I wish I installed, but at the time I didn't know those existed :).
The exhaust is COBB cat-back exhaust:
ua-cam.com/video/Ue_d8Y6-EZE/v-deo.html
Thanks for watching!!
clean
Awesome rebuild! to your knowledge, does the timing chain on these every go bad like on the N20?
it's kinda funny that you had no reaction to literally huge bits of engine parts just littered in chunks in the beginning, but having an audible surprise to a part beins heavier than expected. What are those broken bits anyway? turbo chunks?
Muy buen trabajo
Tengo el mismo n55
Me toca hacer la cadena
Can you suggest where i can get a 2012 bmw 335i service repair manual? I also have an engine to rebuild here in my house. It’s so hard to find engine rebuilder in NC. Thank you much in advance
Great video! N55 is definitely a great engine and you tackle this is great to see.
I am wondering how long does it take in real time?
Hard to say, I did this over probably like 6-8 weeks for an hour or two after works a few times a week.
Świetny film dzięki niemu zdecydowałem się samodzielnie wymienić uszczelkę pokrywy zaworów w moim N54. Pozdrawiam z Polski
Nice rebuild! You probably figured it out, but on the video you did forget a piece when reinstalling the top injector brackets.
I’m working on same thing now. Thank you for the great hands on experience.
are you not supposed to plasti gauge the connecting rod bearings?
How many miles did your old one have before this happened? Also, how much more expansive would it be to do some sort of block guard? While everything is open? (For future high Hp applications)
👍👍👏👏🙌🙌🙌💪💪.
Respect, so great job you have made.
Great Video compilation. I actually watched all the actual videos, and used the material to rebuild my '11 x5 N55 engine. It spun a bearing, number 2 cylinder. I replaced the engine, with a newer model, but kept the bad engine and rebuilt it. Now i have a spare engine. 😎
Where you get the instructions from one the torque and bolt pattern
the damage on the crankshaft and It bearings should happened due a low oil pressure, did you check the cams? it should be damaged too. The work that you did was great. But you had to change the oil pump, the piston rings at least and check the cams....
better build quality than they do in BMW factory!
Lol, no.
I have a question. Why u dont remove all pistons to check and clean?
Like your video a lot but what special tools do you need for the BMW when you re-build the engine thank you.
Not that many special tools. You'll need a timing tool, injector tool and few other smaller items. I have a link in the description with stuff I bought for this project.
Is this engine still running, how successful was your rebuild?
Hi ! Thank you for this awesome content ! Really enjoyed watching this !
Just wondering if I can get some more precision for mainly two moments :
1) around minute 10 => How did you chose that gap clearance ? (I mean why not larger or tighter eventually)
2) around 16'14" or some few moments you've used a torque wrench to tighten that long bolt then you kept tightening it with a circle paper with angle => is there any reason/recommandation for that extra tightening such I've seen that no extra strengh should be put on after the torque wrench click ?
Sorry if those questions have already been asked but I didn't see them prior and for sure, thank you for the questions !
Cheers !🙌
angle torquing is simply a more precise way of measuring ... so its not off. 70nm would be something like double that by doing 360. gap clearance is chosen by piston manufacturer. read manual for proper end gap... most brands are a little different than stock.
Great video and well edited! Did you have to worry about the “color” of bearings or not because they were aftermarket?
no
No need when installing aftermarket bearings. I tested using plastigage to make sure the bearings I got worked for my set up and it was bang in the middle, so basically perfect. Thanks for watching!
Great work
Can you explain at beginning of the video. When you started to fit bearing so you had two sets of bearing
Sounds like you check clearance than you took off bearing than installed different bearing again.
Not sure if I made sense 👍🏻
For both main and rod bearings I used my new bearings with the old bolts to measure the gap and make sure the clearance was within spec using plastigage. I have a video on plastigage if you want to learn more. Once everything checked out, I put some assembly lube and using new bolts torqued everything to spec. Using new bolts is vital as these are stretch to yield bolts and if you use old bolts, you won't get correct torque figures.
Hope that helps! Thanks for watching.
@@SimpleCarGuy makes perfect sense 👍🏻
Thanks
Hello where did you find all torque specs?
How much would it be to rebuild a N20 engine on x3 28i twin turbo xdrive
Very nice job!! what is the green lines you put on the bearings for?? Thank in advance
That measures the tolerances to make sure they are in spec. If the ‘squished’ plastigage is too thick or thin I wouldn’t proceed with the install and have to get different bearing etc.
@@SimpleCarGuy Thank you very much! Cheers
I have a n20 engine that has low compression cylinder 1-3-4 90 psi num2 119 can these engines be honed ?
Amazing video. Only thing id say is clean out your engines as much as possible before re assembly of anything
Great tip, thanks!
What is the purpose of the clip and arm on the angle indicator? I checked your "tools used" link, but still didn't quite understand.
Most of the bolts on this engine are torque-to-yield, which means they stretch as torque is applied. To make sure the 'stretch' is exactly as it should be, BMW says to use a torque wrench and tighten it to, let's say, 90 lb ft of torque and THEN add additional 90 degrees of rotation. This is what that tool is for, it allows you to add addition rotation of torque to the bolt.
@@SimpleCarGuy Oh, I understood the additional angular torque. I meant, just the actual bendy arm and gator clip on the angle indicator tool. Not sure of its purpose.
Not sure why you didn't remove the pistons and clean them out of the cylinders so didn't deposit all of the crud into the compression ring grooves. Even if you weren't going to replace the rings, which would have been a good idea, it wouldn't have been much more work.
I should have, but I was already feeling like I’m putting way too much time into this and honestly, I didn’t have anyone to tell me any better.
@@SimpleCarGuy Considering you got the job done without knowing that, you did very well!
nice
Hey partner is it possibly to do the timing chain guide with the motor in.
Hi! Yes, it's possible. Depending on the model of the car, you may need to drop the subframe (it's like 8 bolts) if you want to do the timing chain at the same time and you'll have to remove the radiator fan and a few things on top of the engine to remove the valve cover. I go into a little bit of detail in the video on the timing chain: ua-cam.com/video/-apNebfNCMA/v-deo.html
Thanks for watching.
"doesn't sound so good" LOL
It didn’t haha
Hello what km was your N55 engine ? How you destroy it ? It was remap ? Oil change on every 30 k km ?
This video was a compilation of about 9 other videos he made, if you go back to his original videos, I believe he give more information.
Hi, What was that yellow seal called at 12:15 ??
Hello, where did you find the tightening torques? Thanks a lot
I used newtis and BMW software at the time.
hi where did you find the torque specs?
Iv found the conrod bolt specs (20Nm + 70deg + 70deg) but cannot find the specs for the main bearings.
thanks
Main bearings inner bolts 20Nm +70 ° outer bolts M8 - 8Nm + 90° outer bolts M10 - 15Nm + 90° all bolts new. Data from workshopdata
I used newtis.info and BMW's software that can be found on the internet.
bro why couldn't you add the torch settings for every bolt!
How much replacement engine n55 go for these days?
Probably around $4k, more with lower miles.
Great video if you can talk to us next time and not just to your self.
Start with " coming up". 🤣🍻👍
I have a 10 video series on each step of this rebuild with commentary. Check it out!
Good video)
How is engine feeling for now? Still works well?)
Has about 5-6k miles on it now. Feels strong so far.
man i need you to help me w timing chain 4 my e90 n55
And, never use a power tool to wind down mains caps bolts! the same goes for cylinder head bolts, always do by hand, but check the bolt threads beforehand.
Torque specs ? Where did you get them for the entire assembly
they have things called service manuals. amazing, really. tells you how to put everything back together.
You know your job
Did you forget to put the rear main seal?
素晴らしい
Great video..but valve steam seal replacement was most important😢
I didn't think of that! Should have done those when the engine was out.
What is that thing you bolt on to the oil sump at 26:10?
That's the front differential as this is an AWD vehicle.
Yikes what is the torque spec for that crank bolt??
That bolt is crazy! It's torqued up to 100Nm and then ANOTHER 270 degrees of ration after!! In the service manual, BMW states: "Breakaway torque of the central bolt > 600 Newton metres"
How much would u charge for this job and how much was the engine
I don't do this as a job, I just did it to see if I can rebuild an engine. The second engine I bought was $300 as it had a spun bearing which required a full rebuild because the crankshaft was damaged. It's not really worth it to pay someone to rebuild it as it's cheaper to buy a used engine.
I had purchased a 2011 BMW 535i, with an N55 engine. The engine has rattlely noise when I start it, and scanner shows Camshaft Retard, Bank A & B error code. I've replaced VANOS Solenoid valves to no avail. I've just replaced spark plugs, and will be checking the timing chain. Hopefully these last two will at least provide an improvement to the engine.
Hows it been?
@@brewyawn3394not good. I turned the engine manually when checking the timing chain. Put valve cover back on, engine oil etc, started the engine, cranks but won't start.
I gotta ask, how did all that matter get in there??
That was all parts of the engine.. the rod bearing spun and seized on the crankshaft and then the rod broke and sent metal pieces flying throughout the engine.
I never hear good Things about the n55 are they really that bad?
They are not a bad engine, but people tune them and drive them hard. I have a video on all problems to expect on these engines.
Is the engine still running smoothly?
Yep, still in my car
My M57 just spun a bearing so am considering rebuilding it. It's not cheap. Would you rebuild over finding a used engine?
what is he doing at 9:44
But why not replace the rings too???
That was a goof on my part! Should have done it now that I think about it.
Good Job on the rebuild, but seeing all the negative things like the crank hub or open deck design, tells me to stay away from that engine
How much would it cost for an engine rebuild ?
Not sure, I just do this for fun, but the parts were about $3500 if I remember correctly
You did injector the bed plate sealant wrong. Could possibly leak down the road.
How so? Can you please elaborate? Would love to add a note and learn for future.
One of your pistons did not get a bearing... If am not wrong
Clips were slightly out of order. I, of course, installed the bearing just like the rest. Engine has been running for 2-ish years
So I can rebuild a motor in 30 minutes?! I’m in the wrong profession 😩😂 jk great video!
Everything is easy on the internet!
HLP my 😢😢 tank you SAR
11:32 cylinder #6 does not have a rod bearing installed...i will lose sleep over this forever.
Good catch!! Poor editing job on my side haha. In the full video on rod bearings, I show a lot more detail and the part where I install the missing bearing as well! Thanks for watching.
Запечатываем праймером, всё как по tis