[GreQonE]

Originally Posted by Toome

62k Kilometers and you've replaced all that? I'm at 58k MILES and have only done half of that stuff. You must really be beating on it if you've been through 10 sets of rotors. Either that or you take preventative maintenance to a whole new level.

I have been to track twice and it was just for "safety" courses, so no beating.

I do like to use my right foot quite often when I am on a highway tho (in Poland we have pretty fresh highways, with almost no traffic in week around midnights so we are more likely to use them as autobahns for certain parts of them)

I warp rotors as crazy. I have even bought a BBK once and it lasted around 3000KM.

[GreQonE]

Originally Posted by maddmatth

I can't imagine how you've gone through 10 sets of rotors unless you actually race your car on track often?

Entire suspension? You must have rough roads over there, in that case your car is putting up with a beating!
What exactly does "entire suspension" entail here? Was it all worn or just for an upgrade?
I can't imagine bushings are stuffed that soon, I'm at 160000km and haven't even been able to wear out my stock control arms despite my car being on coilovers and frequently driven hard. While it's possible my control arms were replaced by a past owner I don't think so, they are TRW branded but are NOT the M3 ones.

Entire suspension:
- Control arms (bushings were worn out)
- Shocks (one was leaking - had to change out, and went with it and changed all 4 as the other ones were in pretty bad shape)
- Mounts
- Springs
And other parts I do not know english names for that do with suspension )

The roads are quite rough, and the fact that the car rolled out of factory on 18 inch wheels with runflats doesn't help

As mentioned above - I only tracked the car twice and it was for "Safety courses" so no real hard beating, I only like to go fast where it's relatively safe - highways, and that's where I kill all of the rotors.


I was thinking of going PS2 but after what I have been through with engine unrelated malfuntions I think I will hold back

[Bours]

Originally Posted by GreQonE

Entire suspension:
- Control arms (bushings were worn out)
- Shocks (one was leaking - had to change out, and went with it and changed all 4 as the other ones were in pretty bad shape)
- Mounts
- Springs
And other parts I do not know english names for that do with suspension )

The roads are quite rough, and the fact that the car rolled out of factory on 18 inch wheels with runflats doesn't help

As mentioned above - I only tracked the car twice and it was for "Safety courses" so no real hard beating, I only like to go fast where it's relatively safe - highways, and that's where I kill all of the rotors.


I was thinking of going PS2 but after what I have been through with engine unrelated malfuntions I think I will hold back

May i ask which engine malfunctions ???
I installed ps2 and on first day i spun the crankhub....

I really hope no valves are bent....its gettin fixed ( new hub. New tensioner. New cam sprockets

[SnapCoupe]

Originally Posted by Bours

May i ask which engine malfunctions ???
I installed ps2 and on first day i spun the crankhub....

I really hope no valves are bent....its gettin fixed ( new hub. New tensioner. New cam sprockets

How did you come to the conclusion that you spun the crank hub? Did the motor knock at all?

I am curious if all of these N55 "catastrophic failures" are actually rod bearings or if some could be other issues such as this.

[Bours]

Originally Posted by SnapCoupe

How did you come to the conclusion that you spun the crank hub? Did the motor knock at all?

I am curious if all of these N55 "catastrophic failures" are actually rod bearings or if some could be other issues such as this.

well my indy is inspecting the car after i did a huge pull on ps2 and i got these codes. plug 1 was melted and cam sproket was off. hes changing the hub. the tensioner . plugs and cam sprokets and hopes it fixes it..


compression is 75 psi on all 6 cylinders so he thinks valves are ok and not bent

[SnapCoupe]

Originally Posted by Bours

well my indy is inspecting the car after i did a huge pull on ps2 and i got these codes. plug 1 was melted and cam sproket was off. hes changing the hub. the tensioner . plugs and cam sprokets and hopes it fixes it..


compression is 75 psi on all 6 cylinders so he thinks valves are ok and not bent

Interesting. I could be wrong, but isn't 75psi kind of low for a compression test?

[Bours]

Originally Posted by SnapCoupe

Interesting. I could be wrong, but isn't 75psi kind of low for a compression test?

yea but 75 psi equal on all cylinders prolly due to timing being off...

factory is 150 to 200 psi

its supposed to get back to these numbers after new parts come in

[GreQonE]

Originally Posted by Bours

May i ask which engine malfunctions ???
I installed ps2 and on first day i spun the crankhub....

I really hope no valves are bent....its gettin fixed ( new hub. New tensioner. New cam sprockets

As I have said engine unrelated malfunctions

[SnapCoupe]

Originally Posted by Bours

yea but 75 psi equal on all cylinders prolly due to timing being off...

factory is 150 to 200 psi

its supposed to get back to these numbers after new parts come in

Ah, makes sense. Keep us posted once you start replacing parts. Curious to hear the final solution.

[Bours]

Originally Posted by SnapCoupe

Ah, makes sense. Keep us posted once you start replacing parts. Curious to hear the final solution.

i will

[Xdrive35i2014]

Originally Posted by Bours

i will

is your shop Bimmerpro by any chance? Are they any good?

[Bours]

Originally Posted by Xdrive35i2014

is your shop Bimmerpro by any chance? Are they any good?

No its af motorsports. Never heard of bimmerpro where they at ?

[Xdrive35i2014]

Originally Posted by Bours

No its af motorsports. Never heard of bimmerpro where they at ?

They are somewhere in Montreal. Seems like they are the only guys in Canada that can unlock 2012+ N55 e series DMEs. I am thinking of sending my car's DME over to them but there's not a lot of review of their shop...

[dleccord]

Originally Posted by Pladi

We would hear all over the internet.. the N55 is used on almost all BMW platforms.. people STOP saying its an issue with this engine..

Either 1 : Bad tune
2: Bad maintenance
3 : Manufacturing Defect (Rare)

But to say its a "design" issue.. nonsense.

To add: if anything the stock tune is too aggressive for 91. So bad gas can cause this issue.

yeah but aren't the other n55's different in some ways such as different internals/turbos, etc.

[bbnks2]

Originally Posted by dleccord

yeah but aren't the other n55's different in some ways such as different internals/turbos, etc.

Same rods and bearings have been put in every N55 including the latest 2018 M2... For the number of engines on the road, it's expected that a handful will fail and come running to the forums to complain. Even more so now that the N55 is an aging motor in earlier production vehicles. When the N54 was put into everything, that is all you heard about... N54 failures. You still see blown N54s on the daily from enthusiasts even though the number of N55s on the street probably vastly outnumbers the number of N54s 2:1.

[Pladi]

Originally Posted by bbnks2

Same rods and bearings have been put in every N55 including the latest 2018 M2... For the number of engines on the road, it's expected that a handful will fail and come running to the forums to complain. Even more so now that the N55 is an aging motor in earlier production vehicles. When the N54 was put into everything, that is all you heard about... N54 failures. You still see blown N54s on the daily from enthusiasts even though the number of N55s on the street probably vastly outnumbers the number of N54s 2:1.

thank you sir thats exactly my point in a fewer words.

We can sit here and say : is the water pump a big issue ? YES
Is the HPFP still an issue : Probably still yes
IS the oil housing gasket an issue : YES
But rods.. thats a negative. More so is the fact that alot of these engine noises are grouped quickly to "ROD ISSUE" when no one in this forum has even taken one apart to show everyone LOOK this is the evidence... for all that we know it could be a bent rod.. piston slap.. and so on.. no one has investigated anything just accusations..

[GreQonE]

Originally Posted by GreQonE

Soo... My car has 62 thousand kilometers now.

I have had it since new, since it rolled out of the dealer.

By now I have replaced:
- Entire suspension
- around 10 times all rotors
- dct oil pan along with dct oil
- diff sealings
- radiator
- coolant reservoir
- sealing on all coolant related stuff
- water pump

Now looking at:
- diff mounts
- something about the pulley

I do not consider this to be that well made car.

Let me add entire Valvetronic to that list at 63k kilometers

[Bours]

Well i think im having a bent rod......indy shop in confirming in 1 hour....the sound is 95% bent rod....

I will rebuild the engine

[bbnks2]

Originally Posted by Bours

Well i think im having a bent rod......indy shop in confirming in 1 hour....the sound is 95% bent rod....

I will rebuild the engine

What sound? All you posted was that you did a pull with a PS2 and spun the crank hub? What else happened?

[Bours]

Originally Posted by bbnks2

What sound? All you posted was that you did a pull with a PS2 and spun the crank hub? What else happened?

the timing got fixed and car was running perfect. two days later
.....i did a 3rd gear pull 18 psi 2500 rpm to 6500 rpm then i have a huge bent rod noise when i rev it....


towed it back to indy shop....he will look for metal shavings....i might just rebuild the engine at mmp with upgraded rods . bearings and pistons....


used engines are too high mileage and could do the same...

[flipmode]

Originally Posted by Bours

the timing got fixed and car was running perfect. two days later
.....i did a 3rd gear pull 18 psi 2500 rpm to 6500 rpm then i have a huge bent rod noise when i rev it....


towed it back to indy shop....he will look for metal shavings....i might just rebuild the engine at mmp with upgraded rods . bearings and pistons....


used engines are too high mileage and could do the same...

I was thinking of installing a PS2 on my 2011 335i, but now I'm nervous with all these issues with the added power to these engines........

[9krpmrx8]

It's really not an issue.