N47 diesel engine chain problems and fix!

This week we got in some E90 with 83k miles and with broken timing chain .
So first thing was to strip it to see what damage is inside and does it worth repair or will need second hand engine .
It happened on very low speed so not so many broken parts - top timing chain,sliders,4 rockers .For sake of god,was replaced 4 hydraulic adjusters and cam shaft housing box ,which is very common to crack and may be not visible straight away and can get problems in near future .She got full new set of 3 chains ,sliders,tensioners,nozzle ,fuel pump sprocket,gaskets ,crankshaft seal ,injector washers ,full engine service kit .Double mass flywheel had visual wear signs ,mowing too much front and back and leaking oil from internals,visual clutch disc wear ,so she got all new set of clutch kit with dual mass flywheel .All parts got from Frank Kean BMW in Naas road .
Car is back on road and drives perfect!

BTW it doesnt worth to get second hand engine as it would need to change chains straight away anyway and its extra expenses

Few ,not much , pictures of done work

Out of interest Valdas, how much does a job like that cost roughly?

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Originally Posted by E90 Brian

Out of interest Valdas, how much does a job like that cost roughly?

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If do the job before chain broke, up to 2k with full engine service kit,and goes up if timing chain already broken.But could be very big damage if chain broke on high revs .The worst might need new engine .So better to do it early ;)

All things relative not too bad, I've heard horror stories of €6k - €8k if it breaks from main dealers :-/ reminds me must check the engine code on my new motor tomorrow :D

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My niece has a 320d but its some sort of special edition like the Si, Edition Sport, it had BBS wheels. Anyway the engine went (timing chain). Engine has to come from Germany €€€€!
I found two N47 engines but apparently this edition has some tweaks.

N47 Timimg chain = Time Bomb!

Edit: it was one of these:

http://www.ebay.co.uk/bhp/bmw-320d-m-sport-edition

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Originally Posted by rebel.ranter

My niece has a 320d but its some sort of special edition like the Si, Edition Sport, it had BBS wheels. Anyway the engine went (timing chain). Engine has to come from Germany €€€€!
I found two N47 engines but apparently this edition has some tweaks.

N47 Timimg chain = Time Bomb!

Edit: it was one of these:

http://www.ebay.co.uk/bhp/bmw-320d-m-sport-edition

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Sorry to hear about your niece!
Same thing happened me in January chain broke on the m1 cost 2500 to put back on the road!
Lucky enough my engine wasnt ruined and could be repaired.

Another N47 with only 70k mls .Engine still running but was noisy and what we found ,chain hydraulic tensioner was fully out cos of stretched top chain.It has like limiter for maximum length ,but now it was fully shoot out,not much left till full chain destroy and more engine damage .

Why are people buying these still if it's such a common fault!?

becouse there is nothing better in this world anyway :cool:
any car has some common problems ,and its really not end of the world .Its actually same as to change timing belt on any other make or model ,why people dont think about this from different side :smiling:

Hello! I'm having aswell a BMW 118d with N47 engine. Car has done 126000km (almost 80000miles) and i have the ticking sound few minutes after the cold start. When warm the engine stops ticking. I mention that the sound comes from the distribution chain and here i ask.

Is there recommended to replace the chain tensioner with the new updated version? Would i do something bad to the chain assembly? I don't see any other thing causing the rattle of the chain other than the tensioner (or maybe a stretched chain already).

I see it's a fairly easy job, probably hard to reach bolt but would u recommend me to do it? Or maybe wait and replace all elements which cost quite alot :).

I'm thinking of going up years , but of course afraid to , what kind of money would you be looking at to do replace as a preventative measure?


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Is the 320D the same engine? Also what is causing this failure??

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Just buy the 6 cylinder its an extra 400e a year in tax for the 525d

Say it costs 2k for the chain job that covers you for 5 years tax difference

Plus you get more reliability and the extra cylinders make a world of difference

If your worried about economy have it remapped to be fuel friendly should easily match a 520d

Lastly the 6 pots are usually cheaper is well win win you cant lose

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Originally Posted by Gar

Just buy the 6 cylinder its an extra 400e a year in tax for the 525d

Say it costs 2k for the chain job that covers you for 5 years tax difference

Plus you get more reliability and the extra cylinders make a world of difference

If your worried about economy have it remapped to be fuel friendly should easily match a 520d

Lastly the 6 pots are usually cheaper is well win win you cant lose

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That's exactly it some people are just obsessed with the cheap tax .

I'm in an 07 520d msport now, want to come up the years and most 525 -535 msport are serious bucks for those years, or am I wrong?


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How many years do you intend to go up this issue has been fixed on the later 520d's iirc

And your right a 5 from 08 up in anything other then a 2.0 diesel is rare as hens teeth so can demand a premium

Wasn't aware you were Already in such a late car

I actually don't mind the years, it's more the mileage.... Ahh I'll start another thread I've hijacked this one enough


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Originally Posted by TheRev

Is the 320D the same engine? Also what is causing this failure??

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once its N47 engine it has this problem,and its caused of engine mileage .Problem starts from around 70k mls .have now in E61 with 260k km

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Originally Posted by Valdelisbmw

Quote:

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Originally Posted by TheRev

Is the 320D the same engine? Also what is causing this failure??

Sent from my magical talkie device

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once its N47 engine it has this problem,and its caused of engine mileage .Problem starts from around 70k mls .have now in E61 with 260k km

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Is there anything to do to prevent failure? Looking at one for a friend tomorrow with 90k miles..

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Originally Posted by TheRev

Is there anything to do to prevent failure? Looking at one for a friend tomorrow with 90k miles..

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can U do something to prevent tire wear? NO! only not use it or change when it start fail

Exactly what I expected

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more and more N47 fixed timing chains ,this is one of them with quick wash after all work

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Originally Posted by Valdelisbmw

This week we got in some E90 with 83k miles and with broken timing chain .
So first thing was to strip it to see what damage is inside and does it worth repair or will need second hand engine .
It happened on very low speed so not so many broken parts - top timing chain,sliders,4 rockers .For sake of god,was replaced 4 hydraulic adjusters and cam shaft housing box ,which is very common to crack and may be not visible straight away and can get problems in near future .She got full new set of 3 chains ,sliders,tensioners,nozzle ,fuel pump sprocket,gaskets ,crankshaft seal ,injector washers ,full engine service kit .Double mass flywheel had visual wear signs ,mowing too much front and back and leaking oil from internals,visual clutch disc wear ,so she got all new set of clutch kit with dual mass flywheel .All parts got from Frank Kean BMW in Naas road .
Car is back on road and drives perfect!

BTW it doesnt worth to get second hand engine as it would need to change chains straight away anyway and its extra expenses

Few ,not much , pictures of done work

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hi mate just want to know if u had the work shop manual for n47 as i am replacing my timing chains on my car, bmw 320d, TIS INFORMATION ,or special tool i need.
thanks a lot if u can help me.
sam

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Originally Posted by ferrari

hi mate just want to know if u had the work shop manual for n47 as i am replacing my timing chains on my car, bmw 320d, TIS INFORMATION ,or special tool i need.
thanks a lot if u can help me.
sam

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Yes U need special tools ,these are easy to get on ebay and with them its easy enough ,only engine out job and some strip out .some people do this in car with gearbox out ,but i like to get more space even if its need more time to do this .

some more fresh models for new timing chain , 2010 F10 520d ,with just over 80k mls on the clock ,and new turbo as well

If you get this fixed before the chain snaps, how long is the engine good for then?

I have had numerous problems with my car.... dmf + clutch kit... pulleys... I am sick of it. All of the fun is gone out of this car.

Thanks for help.

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Originally Posted by myshirt

If you get this fixed before the chain snaps, how long is the engine good for then?

I have had numerous problems with my car.... dmf + clutch kit... pulleys... I am sick of it. All of the fun is gone out of this car.

Thanks for help.

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minimum another 70k mls , if U will have it for so long .

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Originally Posted by Valdelisbmw

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Originally Posted by myshirt

If you get this fixed before the chain snaps, how long is the engine good for then?

I have had numerous problems with my car.... dmf + clutch kit... pulleys... I am sick of it. All of the fun is gone out of this car.

Thanks for help.

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minimum another 70k mls , if U will have it for so long .

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Why not the life of the engine? Are these engines that bad?

Do you think I should just sell the car as is? Get if fixed and sell? Or get it fixed and keep it?
From your experience, what is the most sensible option?

I just fear that if I get this fixed, I will always worry about every noise, and then the dpf will go, or the turbo will go. This car has really just ruined my life, I am so upset. And I just lost my job aswell.

Thank you very much for your reply and help.

sorry but I definitely cant help here .
Its lowest mileage when they fail , but they can make double mileage and much more ,its all about engine service

all cars has their minuses ,and BMW not the first or last in this queue
any diesel or turbo car will have same problems , turbos ,clutches with dual mass flywheels ,pulleys , chains or timing belts and so on . I don't see minuses in BMW ,they made to get driving pleasure !!

Thank you Valdas.

My car has 100,000 miles on it. It was serviced at:

18,000 miles
36,000 miles
50,000 miles
62,000 miles
75,000 miles
85,000 miles
95,000 miles

Sorry Valdas, I did not realise that I was posting my question in your forum.

Should I ask this question on a different part of the bmwhaus website? Sorry. I am new to this website.

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Originally Posted by myshirt

Sorry Valdas, I did not realise that I was posting my question in your forum.

Should I ask this question on a different part of the bmwhaus website? Sorry. I am new to this website.

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for me its no problems at all . it might be useful for other readers

Thanks Valdas. If you have any other advice on this N47 engine car, please let me know.

Hi Valdas, can you send me your number I would like to talk about getting my timing chain replaced

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Originally Posted by jdunneirl

Hi Valdas, can you send me your number I would like to talk about getting my timing chain replaced

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Here you go

http://www.bmwhaus.ie/vbulletin/show...tor-Confidence