[Blubaron79]

Originally Posted by ctuna

Mike Miller has something to say about Turbo's and Turbo warm
up in his recent updates to the Old School Maintenance schedule.
Basically they need to be warmed up before you hit them and they need to be cooled down before you put them away. Apply's to all Turbo cars.

Google Mike Miller BMW and you can find the schedule.
version 2.11 has a section on the N54

It doesn't matter if your under warranty until the warranty runs out, which is when they fail.

Can you please provide a link to this? Thanks!

[BuellsterR1]

Damn, I wish you were in the San Diego, Ca area. I would have totally helped you out.

I was able to replace the valve cover gasket, oil filter gasket, and oil thermostat gasket for $80 total using OEM gaskets. I of course, did it myself and took up the whole day but it was fun considering this was my first time working on a 335i. After all this was said and done, I still have an oil leak coming from the exact area you have pictured...lol. I traced the final leaks down to both oil return line gaskets coming off the turbo which I purchased from ECStuning.com for $10 shipped. I plan to replace these two gaskets on the next oil change. Good luck and please consider learning how to work on your own cars. Its intimidating at first but once you get the hang of it, it will save you tons of $$.

[David1]

Originally Posted by 335iRlz

Best info on the site +1... I saw a guy peel out of the service department after picking up his 335i and I just shook my head. I wait till 220 degrees to go over 2500rpms.

No need to wait with that unless you are in an area with temps that are always less than 30 outside. With synthetic oils the flow hot versus cold is not that different unless you are at sub freezing temps. No need to wait to turn off either since the water pump will run when you turn off the car to keep cooling the turbo. The real issue is you either get a good set of turbos or you don't.

[David1]

Originally Posted by ctuna

Mike Miller has something to say about Turbo's and Turbo warm
up in his recent updates to the Old School Maintenance schedule.
Basically they need to be warmed up before you hit them and they need to be cooled down before you put them away. Apply's to all Turbo cars.

Google Mike Miller BMW and you can find the schedule.
version 2.11 has a section on the N54

It doesn't matter if your under warranty until the warranty runs out, which is when they fail.

It's more of an issue of the quality of the turbo than warm up and cool down as long as you have synthetic oil. Mike is very good at spending your money and making people paranoid. For what fails on these cars no amount of maintainance will prevent it.

[galahad05]

Originally Posted by David1

It's more of an issue of the quality of the turbo than warm up and cool down as long as you have synthetic oil. Mike is very good at spending your money and making people paranoid. For what fails on these cars no amount of maintainance will prevent it.

There may be some truth to that--case in point: the water pump.
Of course, this assumes that one's definition of "maintenance" isn't "replace whole units all the time before they fail". Which in my opinion is barely better than letting the units fail.

[VNeBLOB42]

@cmro

What happened?

[Koolkozak]

Originally Posted by VNeBLOB42

@cmro

What happened?

Sold the bimmer and bought a honda

[VNeBLOB42]

Originally Posted by Koolkozak

Sold the bimmer and bought a honda

really? I didn't see where there was a definitive reason why BMW would honor the Turbo Warranty.

[Fun w/N54]

The turbo warranty is specific to the wastegaste problem "...any failure of a turbocharger caused by a defect in a turbocharger wastegate".

This along with the CPO and even BMW extended warranties do NOT cover any seals, oil lines, vacuum lines, etc. They are only covered as PART OF replacement of a covered part.

[chaz_master]

Originally Posted by fun2drive

Wastegates can rattle and that is a fact in any turbo engined vehicle out there. However what typically takes the turbos out is hammering the car when the oil temperature is not up to operating temperatures.
If you respect these limits you will not blow seals and get what is either called a lazy turbo or one that is puking oil.
That is why there is a temperature gage, problem is that BMW never really tells you that you should respect that limit.
I am not aware that BMW has extended the warranty past the 8 years/ 82K miles.
If you buy used you don't know how hard the PO drove the car. I do hope BMW covers this since BMW is picking the tab up not that dealer the dealer is usually very good at replacing the turbos.
I expect my turbos and wastegates to last the entire life of the car because I do respect the need to have warm oil before getting on it.

OP please post how this comes out...

+1 I would bet a fair number of people who've had turbo problems have mistreated the car themselves or the car was mistreated before it got to them.

I find it funny how people will say how unreliable the 335i is, yet they still go and mod the shit out of them.

[boris]

Originally Posted by fun2drive

Wastegates can rattle and that is a fact in any turbo engined vehicle out there. However what typically takes the turbos out is hammering the car when the oil temperature is not up to operating temperatures.
If you respect these limits you will not blow seals and get what is either called a lazy turbo or one that is puking oil.
That is why there is a temperature gage, problem is that BMW never really tells you that you should respect that limit.

It pains me to see a 335/135/535 that just starts up, is cold as fuck, and hammers on the highway.

[d8rknight]

dang.. hope OP really didnt sell and get a honda

[galahad05]

Somewhere I read a post by one of the big N54/N55 tuners that mentioned that the DME will prevent full boost via wastegate bypass until oil temperatures get past 160F, and that at least this tuner was following this path; "BMW's engineers know best" or something like that.

[David1]

Originally Posted by galahad05

Somewhere I read a post by one of the big N54/N55 tuners that mentioned that the DME will prevent full boost via wastegate bypass until oil temperatures get past 160F, and that at least this tuner was following this path; "BMW's engineers know best" or something like that.

Just the tunes not all. Factory allows full boost after a couple of miles.

[Koolkozak]

Originally Posted by d8rknight

dang.. hope OP really didnt sell and get a honda

haha me too, i make joke!
Hope he comes back and lets us know what happened. It'd be nice to know since im looking to buy a 335 myself.

[fun2drive]

The reason for not hammering the engine cold is that synthetic oil or dino oil when cold will not be controlled by the pressure relief valve and guess what goes to the engine and turbos? Engine doesn't care but turbos don't do well at well over 100psi oil pressure time and time again.
If you think this is unique to the 335 think again. E46 M3's are limited to how many rpms they can run for a reason, thermal expansion to be uniform over the entire engine including the head.
This type of care for turbos is common on aircraft, trucks and other heavy equipment.

Nothing from the OP yet but failing turbo bearings? Really? I can see blown seals but bearings not very likely. You can make a case that the wastegate failed causing the overboost causing over speed of the turbo shaft causing failure. Pretty far fetched but possible. I am betting that something else is wrong here either oil leak from the turbos from the oil lines or seals.
Oil filter housing gasket will puke oil so that is possible and the mechatronic sleeve leak on the transmission needs corrected too but none of these are jobs that a DIY can't do.
Turbo replacement is a PITA but doable and takes time.

Fingers crossed OP that someone at another dealer or BMWNA is willing to help correct this under warranty.

It would be pretty poor that the Asian turbos that BMW uses fail at such a short life. Also as mentioned before it is unlilkely both turbos are bad.
Good luck and post what the outcome is OP...

[galahad05]

Originally Posted by David1

Just the tunes not all. Factory allows full boost after a couple of miles.

Good to know, thanks!

[Supreme214]

Dammmmm 7k?!!!! I also had rattle but it turn out to be a vaccum leak.

[Vitalität]

Does this explain why the 8th 335i I just drove test today for the past couple of weeks all had leaks underneath? They are all 2007. Good thing I have been lurking here for weeks before I actually bought one. Going with 328i then...

[ny325]

Good luck OP. I'm strongly contiplating on getting rid of my E90. To much nonsense on these cars to deal with.

[batman_e92]

sorry to see you go through this OP , but if you can't get them to do this under warranty definitely upgrade the trubos ..when I got my 335 I knew trubo cars need special attention from owners like warming them up and letting them cool down before turning the car off and I know not too many people do thst. My idea was drive them till they fail then upgrade them when the time comes... It helps that I do my own work also.

Once you upgrade you won't look back and fall in love all over again .. I use to have a DSM way back and i put 3 trubos on it and the bigger the got the more fun the car was

[Chrisruf911]

Does anybody notice this is a 2 year old thread. I'm sure the op has figured it out by now. Lol.