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1 hour ago, F1-11 said:

Looks fabulous!! Congratulations. Yep, definitely the B47 engine. Might be worth the 10k interim oil changes (I’ve just had one) for peace of mind but you should be really pleased with such a lovely looking car.


Thank you, very happy

 

Ill take your advice about the oil change at the same time as I get the dash cam fitted.

 

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On 5/16/2021 at 6:28 PM, Matthew Ashton said:

2015 - B47

 

Do a VIN decode on mdecoder.com and that will tell you the engine fitted.

 

According to mdecoder I have a 15 plate (correct) F11 (correct) 535d (correct) left hand drive (incorrect) with the N57Z engine (not sure now).

Another source (can't remember where now) said I have the N57D30T1 engine :huh:

An earlier post on this thread says that if its a 2015 model its most likely to have a B57 engine :huh: :huh:

 

Edited by Flat Cap

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3 minutes ago, Flat Cap said:

 

According to mdecoder I have a 15 plate (correct) F11 (correct) 535d (correct) left hand drive (incorrect) with the N57Z engine (not sure now).

 

Another source (can't remember where now) said I have the N57D30T1 engine :huh:

I notice it tells me I have a left hand drive too. Yippee, no need to worry about the yellow grommet then! Oh, wait…

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11 minutes ago, Flat Cap said:

 

According to mdecoder I have a 15 plate (correct) F11 (correct) 535d (correct) left hand drive (incorrect) with the N57Z engine (not sure now).

Another source (can't remember where now) said I have the N57D30T1 engine :huh:

An earlier post on this thread says that if its a 2015 model its most likely to have a B57 engine :huh: :huh:

 


Diesel:
2015 2.0 = B47

2015 3.0 = N57

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Mine is a 2014 2.0 (525d) and has the N47 engine according to VIN decoder.

Edited by JCP

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1 hour ago, JCP said:

Mine is a 2014 2.0 (525d) and has the N47 engine according to VIN decoder.

I believe that’s correct although strictly speaking I think it’s the N47T - “T” for technical update, improvements include revised components in the timing chain gear according to the research I did (I was going to buy a 525d).

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22 hours ago, Flat Cap said:

 

According to mdecoder I have a 15 plate (correct) F11 (correct) 535d (correct) left hand drive (incorrect) with the N57Z engine (not sure now).

Another source (can't remember where now) said I have the N57D30T1 engine :huh:

An earlier post on this thread says that if its a 2015 model its most likely to have a B57 engine :huh: :huh:

 

 

My UK 2015 B47 is apparently left hand drive too

 

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So if I have the B47 engine do I not have to worry about the timing chain issue?

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36 minutes ago, DarenF said:

So if I have the B47 engine do I not have to worry about the timing chain issue?

Daren,

That’s the conclusion from all the research and forums I’ve read (and I did a lot!)

 

So it seems that the worst engines for failure were the earlier N47s going back 2008-2010 roughly (depends what you read) and then there were various improvements that supposedly improved things but didn’t seem to change the reputation of this engine for failures. The final incarnation was the N47T that’s supposed to be significantly improved but again get tarred with the same brush. One Indy specialist told me they’re all the same and no modifications in the N solved the issues?!

 

Apparently it’s a combination of poor parts and high oil change intervals but to be fair plenty of N47 owners are doing far far north of 100k miles with no problems at all.

 

The B47 engine is an evolution of the N47 and has been around for 7 years now and doesn’t seem to have had the issues that the N47 had, presumably they modified the timing chain gear enough to solve the issues. They’re still using the B47 in the latest G series 5 so it’s been around long enough now to suggest it’s solved the problem. That said, I still turn off my stop start and will maintain 10k oil services anyway, just to be safe. Put it this way, I have total peace of mind in a B47 (not in anyway meant to criticise N47 owners, just personal preference from a born worrier!)

 

hope that helps

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10 hours ago, F1-11 said:

Daren,

That’s the conclusion from all the research and forums I’ve read (and I did a lot!)

 

So it seems that the worst engines for failure were the earlier N47s going back 2008-2010 roughly (depends what you read) and then there were various improvements that supposedly improved things but didn’t seem to change the reputation of this engine for failures. The final incarnation was the N47T that’s supposed to be significantly improved but again get tarred with the same brush. One Indy specialist told me they’re all the same and no modifications in the N solved the issues?!

 

Apparently it’s a combination of poor parts and high oil change intervals but to be fair plenty of N47 owners are doing far far north of 100k miles with no problems at all.

 

The B47 engine is an evolution of the N47 and has been around for 7 years now and doesn’t seem to have had the issues that the N47 had, presumably they modified the timing chain gear enough to solve the issues. They’re still using the B47 in the latest G series 5 so it’s been around long enough now to suggest it’s solved the problem. That said, I still turn off my stop start and will maintain 10k oil services anyway, just to be safe. Put it this way, I have total peace of mind in a B47 (not in anyway meant to criticise N47 owners, just personal preference from a born worrier!)

 

hope that helps

 

Thanks F1

 

Ill disable the Auto-stop/start and keep the oil clean

 

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The N47 is by no means the only BMW engine that suffers from timing chain issues but it is the most common but not all N47 engines will be affected with many doing starship mileages without issue. 

 

11 hours ago, F1-11 said:

 

Apparently it’s a combination of poor parts and high oil change intervals but to be fair plenty of N47 owners are doing far far north of 100k miles with no problems at all.

 

 

The chain is the same on the N57, but the N47 has an inferior machining finish to the camshaft sprocket as a result its sharper and wears the chain faster than the sprocket on the N57 cams.

 

Best thing for any BMW owner regardless of fuel type or number of cylinders is to IGNORE the BMW oil service schedule and change your oil every year or 10,000 miles which ever comes first.

 

BMW Engineer                       "I have designed these timing chains to last 400,000 miles without issue"

BMW Accountant                   "How much will that cost?"

BMW Engineer                       "Doesn't matter, I want these chains to last the lifetime of the car, we at BMW Engineer some of the finest cars in the world"

BMW Accountant                   "Make the chains only last the length of the first owners PCP deal, we need to save tuppence on each valve train assembly to meet the profit targets for our shareholders"

BMW Engineer                       "Nein, I won't do that!"

BMW Accountant                  "Do it or you are fired!"

BMW Engineer                       "O.k. o.k, (but mutters under his breath) perhaps I can reduce the camshaft sprocket costs instead by skipping that last machining process"

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12 hours ago, F1-11 said:

So it seems that the worst engines for failure were the earlier N47s going back 2008-2010 roughly (depends what you read) and then there were various improvements that supposedly improved things but didn’t seem to change the reputation of this engine for failures. The final incarnation was the N47T that’s supposed to be significantly improved but again get tarred with the same brush. One Indy specialist told me they’re all the same and no modifications in the N solved the issues?!

 

BMW never fixed the issue with the N47 engines. There were attempts and speculation that it was fixed - not true.

 

12 hours ago, F1-11 said:

Apparently it’s a combination of poor parts and high oil change intervals but to be fair plenty of N47 owners are doing far far north of 100k miles with no problems at all.

 

It is something to do with the way the gears were machines that put additional load on the chain.

 

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2 hours ago, Matthew Ashton said:

 

 

BMW never fixed the issue with the N47 engines. There were attempts and speculation that it was fixed - not true.

 

 

It is something to do with the way the gears were machines that put additional load on the chain.

 

That aligns with what several specialists told me too - “any N47, walk away”. Seems a bit of a harsh comment towards our N47 members and I’m sure plenty of them haven’t and maybe never will have problems but for me it was just peace of mind to go with the B47, especially as the cost of an N47 + ~£1k for the timing chain etc was about the same as a late 2014 onwards  B47 car anyway.

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43 minutes ago, F1-11 said:

That aligns with what several specialists told me too - “any N47, walk away”. Seems a bit of a harsh comment towards our N47 members and I’m sure plenty of them haven’t and maybe never will have problems but for me it was just peace of mind to go with the B47, especially as the cost of an N47 + ~£1k for the timing chain etc was about the same as a late 2014 onwards  B47 car anyway.

 

As has been said many times before on this subject, the N47 is one of BMW's most popular engines of the era and many are still working without issue. Just something to be conscious of and do preventative maintenance, like regular oil changes.

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22 hours ago, F1-11 said:

I believe that’s correct although strictly speaking I think it’s the N47T - “T” for technical update, improvements include revised components in the timing chain gear according to the research I did (I was going to buy a 525d).

 

Yes spot on.

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