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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 10-10-2013, 08:17 PM
Rich53 Rich53 is offline
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335i needs new turbos. Worth it?

got the news 2007 335i needs new turbos. Car has 154k miles on it. Dealership is quotng close to 6k. Looks like an indy can do it for around 3k. Better off fixing, selling as is or trading in on the next car?
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  #2  
Old 10-10-2013, 08:27 PM
jburke4689 jburke4689 is offline
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Did they tell you why? Wastegates? Oil seals? What is the diagnosis? What are they symptoms?
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Old 10-10-2013, 08:52 PM
SuperTerp SuperTerp is offline
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curious if you tuned it and if so how long. Honestly if you had like a jb4/cobb on most of it thats pretty amazing amount of miles for as much boost those increase over stock.

If not and the rest of the car is seemingly reliable 3k is a minor investment if you're the type of person that would keep the car another 154k.
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Old 10-10-2013, 08:58 PM
AnJing408 AnJing408 is offline
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wow, that's pretty impressive if that's the first set of turbos. I brought mine to service last week since I have 80k miles and found out my turbo's were replaced last year.
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  #5  
Old 10-10-2013, 09:20 PM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by Rich53 View Post
got the news 2007 335i needs new turbos. Car has 154k miles on it. Dealership is quotng close to 6k. Looks like an indy can do it for around 3k. Better off fixing, selling as is or trading in on the next car?

Devil's in the details....how did they come to that?

Beware! That might simply be what's easy. And profitable.
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  #6  
Old 10-10-2013, 09:21 PM
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CALWATERBOY CALWATERBOY is offline
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.

Mind you, I have 500k mi on a diesel turbo with no issue in sight.
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  #7  
Old 10-10-2013, 10:41 PM
SuperTerp SuperTerp is offline
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Quote:
Originally Posted by CALWATERBOY View Post
.

Mind you, I have 500k mi on a diesel turbo with no issue in sight.
Also prob isn't running double/triple the boost like lots of 335i's.
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  #8  
Old 10-11-2013, 04:27 AM
Rich53 Rich53 is offline
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Quote:
Originally Posted by jburke4689 View Post
Did they tell you why? Wastegates? Oil seals? What is the diagnosis? What are they symptoms?
They are saying bearings are loose in the turbos. The car had a small wastegate rattle just when the oil was cold. when running the car you dont feel the turbos at all. sods like a siren in the car when you try to accelerate more aggressively. Never had a tune on it.
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  #9  
Old 10-11-2013, 04:43 AM
hondo402000 hondo402000 is offline
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Turbos should be just a bolt on Item, but with BMW who knows they probably have a computer inside them too!
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  #10  
Old 10-11-2013, 04:44 AM
hondo402000 hondo402000 is offline
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but in the bentley manual they are a pain to get to
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  #11  
Old 10-11-2013, 05:43 AM
SuperTerp SuperTerp is offline
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Quote:
Originally Posted by Rich53 View Post
They are saying bearings are loose in the turbos. The car had a small wastegate rattle just when the oil was cold. when running the car you dont feel the turbos at all. sods like a siren in the car when you try to accelerate more aggressively. Never had a tune on it.
Buy new or used[if so how many owners]?

Reason I ask is because thats a good life in my op. And if you were the second owner or something you still have no idea how someone else treated it.

Comes down to what kind of owner you are, if everything else is looking good. Keep it. If you feel other things might go, look to trade it in or something. Personally I'd get fresh turbos and throw a tune on and for 3-5k (if you did wastegate too), throw a tune on it and get a brand new car feeling overnight [trust me the power difference will feel like you spent 3k on the tune alone ].
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  #12  
Old 10-11-2013, 06:20 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by Rich53 View Post
They are saying bearings are loose in the turbos. The car had a small wastegate rattle just when the oil was cold. when running the car you dont feel the turbos at all. sods like a siren in the car when you try to accelerate more aggressively. Never had a tune on it.

Sounds like a lubrication issue - gotta wonder - how would they evaluate that?

Assuming you've stuck to the straight & narrow re: conditional service,, do they explain why that would happen?

FYI a - 39.99
FYI b - $98.99
FYI c - $60.00
FYI d - $300.00 - barkin' seals
FYI e - warranty

Sound like THIS?




Last edited by CALWATERBOY; 10-11-2013 at 09:03 AM.
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  #13  
Old 10-11-2013, 06:42 AM
Watchme Watchme is offline
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wow so easy to work on, once it's out of the engine bay!!!
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  #14  
Old 10-11-2013, 06:57 AM
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2000 Saab Aero as first car, 194,000 miles, synthetic since new, engine internals work and look like new. Turbo is still quiet and generates full boost.

Turbo's have been perfected for a long time and are 'life of the engine' components. Many go a million miles on diesel trucks. My guess is that the OP's engine was modded previously, or got regular 15,000 mile oil changes.
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  #15  
Old 10-11-2013, 07:23 AM
hondo402000 hondo402000 is offline
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unless you suck something thru the Vanes on the turbo which is unlikely they should never wear, the exhaust side takes more punishment, but really the bearings seem to be the weak spot in the turbo
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  #16  
Old 10-11-2013, 07:30 AM
Watchme Watchme is offline
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aren't the bearings part of HCRA? which is not that exxpensive to replace
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  #17  
Old 10-11-2013, 07:45 AM
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It's a sunk cost either way.

I have 202K on my Volvo winter/beach beater -- and the original Mitsubishi turbocharger. But I wouldn't compare Volvo's system to BMW's system -- which is probably much more complicated to replace.
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  #18  
Old 10-11-2013, 08:19 AM
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TheyCallMeNun TheyCallMeNun is offline
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Im posting mostly to subscribe. I'm curious what you go with; From what I can tell the options are replace the tubros w/ dealership, replace turbos at indy, replace them yourself or rebuild them. Good luck, and please post results!
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  #19  
Old 10-11-2013, 11:02 AM
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BB_cuda BB_cuda is offline
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couldn't oil get coked in the bearings? Would have to be from poor oil flow and then cooking the oil trapped in the flow path of the turbo.
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  #20  
Old 10-11-2013, 11:32 AM
hondo402000 hondo402000 is offline
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possibility but if you have poor oil flow the bearings would be gone before 154K miles, the bearing have cooling jackets around them, so unless the water lines were clogged up they shouldnt over heat. Sounds like time got them.

so what is the car worth? if its only worth 10K, I wouldnt spend 6 to fix it.
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  #21  
Old 10-11-2013, 01:03 PM
Rich53 Rich53 is offline
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Quote:
Originally Posted by SuperTerp View Post
Buy new or used[if so how many owners]?

Reason I ask is because thats a good life in my op. And if you were the second owner or something you still have no idea how someone else treated it.

Comes down to what kind of owner you are, if everything else is looking good. Keep it. If you feel other things might go, look to trade it in or something. Personally I'd get fresh turbos and throw a tune on and for 3-5k (if you did wastegate too), throw a tune on it and get a brand new car feeling overnight [trust me the power difference will feel like you spent 3k on the tune alone ].
Bought the car cpo in 09. Had arund 40k miles on it. Was always on point with service. Blue book on the car is arond 8k with the miles it has. But still looks great cosmetically.

Problem with replacing the turbos is the labor. From what i understand the engine has to be pretty much be taken out to get to both turbos.

Really it comes down to going to a newer car. I do like the 335. Or replacing the turbos with a tune and keeping it.

As for now it feels like i am driving a prius.
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  #22  
Old 10-11-2013, 01:11 PM
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TheyCallMeNun TheyCallMeNun is offline
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Quote:
Originally Posted by Rich53 View Post
Bought the car cpo in 09. Had arund 40k miles on it. Was always on point with service. Blue book on the car is arond 8k with the miles it has. But still looks great cosmetically.

Problem with replacing the turbos is the labor. From what i understand the engine has to be pretty much be taken out to get to both turbos.

Really it comes down to going to a newer car. I do like the 335. Or replacing the turbos with a tune and keeping it.

As for now it feels like i am driving a prius.
you MAY, be able to find a free-lance BMW tech in your area looking for some extra cash. Search in your local forum on this site or any other BMW forum, or maybe you could try craigslist. It could save you a pretty penny.

I'm just spit-ballin' ideas for you.
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  #23  
Old 10-11-2013, 01:24 PM
Watchme Watchme is offline
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you can access turbos from the bottom no?
http://www.e90post.com/forums/showthread.php?t=692077
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  #24  
Old 10-11-2013, 01:48 PM
Pilgrim Pilgrim is offline
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Turbos can be rebuilt - don't need to get "new" ones.

I'm still trying to figure out what the deal is with BMW turbos. My 1983 280ZX Turbo (oil cooled only, and primitive compared to today's oil and water cooled turbos) went bad at 49K miles (previous owner didn't know how to take care of a turbo). The rebuilt turbo I installed is going strong at 128K miles 15 years later. The car has been autocrossed fairly often, and driven in summer and winter. It even has put in a little track time...and the turbo is fine.

Maybe it's people running extra boost. If so, my advice: it ain't worth it unless you have money to burn. Better to live with what BMW designed, which is excellent performance.
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Last edited by Pilgrim; 10-11-2013 at 01:49 PM.
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  #25  
Old 10-11-2013, 03:10 PM
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You can by rebuilt BMW turbos for $620 each & new Mitsubishi OEM BMW parts for $756 each. Thing to look for is an indie installer.
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