E90Post
 


GetBMWParts
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > so i had a discussion with a friend of mine about turbos...



Reply
 
Thread Tools Search this Thread
      04-22-2009, 08:36 PM   #1
dpwr
8
Captain
 
Drives: a good one
Join Date: Oct 2008
Location: Toronto

Posts: 853
iTrader: (0)

so i had a discussion with a friend of mine about turbos...

about how in a long run around 100,000 miles 335 turbos might have some issues and might need to be rebuild or replaced (my point of view)... he's saying how turbos (turbo cars in general) are very reliable and nothing will go wrong with them and they will not fail or need rebuilding/replacing... who is right here ?
dpwr is offline   No_Country
Appreciate 0
Reply With Quote
      04-22-2009, 08:38 PM   #2
Jon335iFL
48
Brigadier General
 
Jon335iFL's Avatar
 
Drives: This----------->
Join Date: Feb 2009
Location: Jrz :)

Posts: 4,841
iTrader: (14)

depends on driving habits


1) floor it at all times never let the car rest

2) drive like grandma


any car can last over 200 grand if you treat it right
__________________


.
Jon335iFL is offline  
Appreciate 0
Reply With Quote
      04-22-2009, 08:41 PM   #3
MSPORTWORLD
11
Major
 
MSPORTWORLD's Avatar
 
Drives: '11 M3 MW/FR - '12 M3 FO/SC
Join Date: Dec 2008
Location: California

Posts: 1,193
iTrader: (2)

Garage List
Both of you are right!
__________________
MSPORTWORLD is offline   United_States
Appreciate 0
Reply With Quote
      04-22-2009, 08:43 PM   #4
Zirenz2006
32
Brigadier General
 
Zirenz2006's Avatar
 
Drives: 12' F30 328i Sport Line
Join Date: Aug 2006
Location: US - RI

Posts: 3,255
iTrader: (0)

__________________
Current: F30 328i Sport Line Sapphire Black|Black-red

Retired: '09 E90 335i M-Sport AW|Oyster, '07 E92 335i Graphite|Saddle, '05 E60 545i TiAg|Black, '01 E46 325i Jet Black|Black
Zirenz2006 is offline   United_States
Appreciate 0
Reply With Quote
      04-22-2009, 08:46 PM   #5
Curt2000
24
Colonel
 
Curt2000's Avatar
 
Drives: '13 ///M3
Join Date: Jun 2007
Location: Sin City

Posts: 2,488
iTrader: (22)

what is the logic behind you asking this question?
__________________

Current Car: '13 SANTORINI BLUE E92///M3--6MT/Speed Cloth/ZCP (ED Thread)
Former Cars:'10 E90 335i MSport / '07 Interlagos ///M5 / '09 135i / '10 E93 335i
Instagram: @C2KMotorsports
Curt2000 is offline   United_States
Appreciate 0
Reply With Quote
      04-22-2009, 08:52 PM   #6
VTECaddict
46
Where'd my VTEC go?
 
VTECaddict's Avatar
 
Drives: 06 330i 6MT
Join Date: Mar 2009
Location: Bakersfield, CA

Posts: 4,620
iTrader: (4)

it depends.
__________________
AW/Terra | ZSP | ZPP | ZCW | iDrive | CA
Mods: BC BR | OEM Blacklines | M-tech rear | custom dual exhaust | M3 steering wheel | BMW SSK | ZHP shift knob | BMW Performance rep spoiler
Varrstoen ES1 19x9.5+20 Front, 19x11+25 rear
VTECaddict is offline  
Appreciate 0
Reply With Quote
      04-22-2009, 08:56 PM   #7
Curt2000
24
Colonel
 
Curt2000's Avatar
 
Drives: '13 ///M3
Join Date: Jun 2007
Location: Sin City

Posts: 2,488
iTrader: (22)

I would say that a turbo's failure rate is somewhere between the tranny and AC compressor...i.e. for some people they never fail but for others they go out between 70-150K I would say...but how hard you are on the car plays a huge role
__________________

Current Car: '13 SANTORINI BLUE E92///M3--6MT/Speed Cloth/ZCP (ED Thread)
Former Cars:'10 E90 335i MSport / '07 Interlagos ///M5 / '09 135i / '10 E93 335i
Instagram: @C2KMotorsports
Curt2000 is offline   United_States
Appreciate 0
Reply With Quote
      04-24-2009, 11:01 AM   #8
scheherazade
14
Major
 
Drives: 09 GTR (& 93' accord!)
Join Date: Sep 2008
Location: DC metro area

Posts: 1,467
iTrader: (8)

Quote:
Originally Posted by dpwr View Post
about how in a long run around 100,000 miles 335 turbos might have some issues and might need to be rebuild or replaced (my point of view)... he's saying how turbos (turbo cars in general) are very reliable and nothing will go wrong with them and they will not fail or need rebuilding/replacing... who is right here ?
A large single that isn't ever boosting beyond peak efficiency, should be good for the life of the car.

things to look out for :

- if your oil pump goes out while you're boosting, you stand a good chance of damaging the turbos. If you're not BB, then you're practically guaranteed some damage.

- if you drive super hard, and immediately turn the car off (without giving it at least a small cool down period), you can bake the turbos in their oil.

- if you ingest crap into your intake, it stands a good chance of not just 'blowing through' like it would in an NA engine. foreign object damage is a real deal.

-scheherazade
scheherazade is offline  
Appreciate 0
Reply With Quote
      04-24-2009, 11:05 AM   #9
enrita
73
Major General
 
enrita's Avatar
 
Drives: 335i - Big turbos
Join Date: Sep 2008
Location: Italian in Sweden

Posts: 7,323
iTrader: (0)

the oil pump still runs the oil through the turbos even when shut down. no need to wait before shutting down.
__________________
07 335i AT - TD St.2 Turbos - COBB (Custom Cobb mapping by http://www.protuningfreaks.com/) - JB4G5 ISO - Okada Coils - NGK 5992 Plugs - E85 Walbro - Injen Intake - Helix IC - Snow Stg. 3 - Stett CP - AR DPs - midpipes 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - Level 10 AT upgrade - Alpina AT Flash
enrita is offline   Sweden
Appreciate 0
Reply With Quote
      04-24-2009, 11:21 AM   #10
dmurray14
12
The Stig
 
dmurray14's Avatar
 
Drives: Quickly
Join Date: Apr 2005
Location: US

Posts: 1,232
iTrader: (1)

Quote:
Originally Posted by enrita View Post
the oil pump still runs the oil through the turbos even when shut down. no need to wait before shutting down.
False. The COOLANT pump runs when shut down. Unless there's something I don't know.
__________________
dmurray14 is offline   United_States
Appreciate 0
Reply With Quote
      04-24-2009, 11:24 AM   #11
enrita
73
Major General
 
enrita's Avatar
 
Drives: 335i - Big turbos
Join Date: Sep 2008
Location: Italian in Sweden

Posts: 7,323
iTrader: (0)

do you really think that BMW would make a turbo car that could run into this kind of troubles? These are new engines , not an Escort cosworth from the 90s...
__________________
07 335i AT - TD St.2 Turbos - COBB (Custom Cobb mapping by http://www.protuningfreaks.com/) - JB4G5 ISO - Okada Coils - NGK 5992 Plugs - E85 Walbro - Injen Intake - Helix IC - Snow Stg. 3 - Stett CP - AR DPs - midpipes 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - Level 10 AT upgrade - Alpina AT Flash
enrita is offline   Sweden
Appreciate 0
Reply With Quote
      04-24-2009, 11:33 AM   #12
Kelvin1000
11
Major
 
Drives: 2008 E92 335i Space Gray
Join Date: Sep 2007
Location: Miami, FL

Posts: 1,190
iTrader: (4)

This is all true but the BMW engineers created the LIMP MODE which will take care of most of these contingencies and more.

If you have a little too much fun at the track you will get LIMP or reduced power either way before you put the engine in harms way.

Quote:
Originally Posted by scheherazade View Post
A large single that isn't ever boosting beyond peak efficiency, should be good for the life of the car.

things to look out for :

- if your oil pump goes out while you're boosting, you stand a good chance of damaging the turbos. If you're not BB, then you're practically guaranteed some damage.

- if you drive super hard, and immediately turn the car off (without giving it at least a small cool down period), you can bake the turbos in their oil.

- if you ingest crap into your intake, it stands a good chance of not just 'blowing through' like it would in an NA engine. foreign object damage is a real deal.

-scheherazade
Kelvin1000 is offline   United_States
Appreciate 0
Reply With Quote
      04-24-2009, 12:15 PM   #13
BavarianBullet
4
Lieutenant
 
BavarianBullet's Avatar
 
Drives: 2014 Audi S5
Join Date: Jul 2008
Location: Connecticut

Posts: 429
iTrader: (1)

Quote:
Originally Posted by dpwr View Post
about how in a long run around 100,000 miles 335 turbos might have some issues and might need to be rebuild or replaced (my point of view)... he's saying how turbos (turbo cars in general) are very reliable and nothing will go wrong with them and they will not fail or need rebuilding/replacing... who is right here ?
A stock BMW 335 with the elec water pump run-on after engine off and using synthetic oil should last to 100k or beyond but since not many of these cars are likely close to that yet, we'll see.

With tunes spinning the turbos to their max RPM it's probably a safe bet that they'll at least be a little loose on bearing clearances by 100k if not worse. Depends on how hard you beat on them- I'm a little concerned about when cold and lubrication isn't optimal. Up here in CT during winter, it takes my car a good 15 minutes of easy driving for the oil temp to get past 200'F in my 335XI. Not much time to beat on it since my commute is only about 22min.

When I get a tune, the warm-up performance re the turbos is concern for me.
__________________
2014 Audi S5 DSG
2011 335xi Sedan (retired)
2008 335xi Sedan (retired)
BavarianBullet is offline   United_States
Appreciate 0
Reply With Quote
      04-24-2009, 06:07 PM   #14
bsd107
6
Captain
 
Drives: 2009 335i E90
Join Date: Jul 2008
Location: US

Posts: 623
iTrader: (0)

Quote:
Originally Posted by enrita View Post
do you really think that BMW would make a turbo car that could run into this kind of troubles?
Yes (HPFP)
bsd107 is offline   United_States
Appreciate 0
Reply With Quote
      04-24-2009, 06:31 PM   #15
TurboFan
62
Ski bum
 
TurboFan's Avatar
 
Drives: sideways
Join Date: Aug 2007
Location: Knee deep in the pow

Posts: 6,207
iTrader: (8)

Depends too if you've modded the engine to run at a higher boost. That will definately shorten the life of those little hair dryers.
__________________

1999 e46 328i Ti Silver / Black[retired]
2007 e90 335xi Jet Black / Black[retired]
2011 e70 X5 35d Vermillion Red / Cinnamon
2011 e92 M3 LeMans / Fox Red extended
TurboFan is offline  
Appreciate 0
Reply With Quote
      04-24-2009, 07:08 PM   #16
LiKWiD335xi
2
Anthony
 
LiKWiD335xi's Avatar
 
Drives: '08 E90 335xi
Join Date: Sep 2008
Location: Central NJ

Posts: 274
iTrader: (1)

Send a message via AIM to LiKWiD335xi
Read this thread: http://www.e90post.com/forums/showthread.php?t=202810

Any car, turbo or not, will fail if not maintained well. You'd be surprised how many cars out there are taken care of like crap. The biggest question isn't if the engine will last, it's if the person who owns it will take good enough care of it.

This is especially true if you're running higher boost. In my opinion, the turbos can handle the higher boost (to certain levels of course) but the longevity of the turbos doesn't depend on just the turbos themselves. You then have to compensate for the higher heat being produced by upgrading the intercooler and oil cooler etc. Stock boost is not the maximum level they can be taken to, car manufacturers will always keep it a few levels below what they can really handle to be on the safe side since they have to warranty their cars. Stock boost is the maximum level at which the manufacturer feels safe enough to release the car with and the level at which they feel safe enough that their parts can cool down fast enough.

Take computers for example: Sure, you can overclock your processor but it's going to last so much longer and be so much more reliable if you upgrade your cooling system as well. Heat is the biggest enemy of all things mechanical.
LiKWiD335xi is offline   Italy
Appreciate 0
Reply With Quote
      04-25-2009, 07:32 AM   #17
kennychopra17
13
Major
 
kennychopra17's Avatar
 
Drives: E90 LCI 335i
Join Date: Mar 2009
Location: NY

Posts: 1,308
iTrader: (4)

If you don't overboost your turbo's all the time, and at thresholld levels your turbo seals should not fail for a long time. Could be for the life of the car. But changes are, these days, anyone that has a turbo car is going to do some kind of mods. Also - when you are overboosting, not only are you in danger of harming your turbos, but you also are in danger of detonating your engine, which could cost a lot more than just replacing turbo's.
kennychopra17 is offline   United_States
Appreciate 0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 02:17 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST