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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Anyone with 100k on their 335??



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      11-02-2012, 09:20 PM   #45
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105,000+ original turbos and all that I have replaced is HPFP (under recall) and 2 injectors. Been FBO since 50,000 been running 50/50 E85 for the last 15-20,000 miles and all is good. Installing Rb's Sunday or Monday.

Edit: possible turbo seal on bank one going out (slight smoke after car sits).
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      11-05-2012, 11:20 PM   #46
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      11-05-2012, 11:32 PM   #47
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Got mine with 78k about 10 months ago and now has 84k. No problems yet.

I do know the car was CPO'd at 45k and had the turbos and HPFP replaced.
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      11-06-2012, 03:53 AM   #48
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93K miles, tuned since 1K.

Only thing major after warranty expired was water pump and new radiator. Radiator was probably from tracking my car with water temps getting too high.

I have all enthusiast level maintenance done on the car.

It's not the most problem free nor the most reliable car, but because I'm so comfortable maintaining the N54 engine, I just went out and bought a 90K 135i 2 weeks ago.

Budget accordingly and enjoy!
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      11-06-2012, 08:25 AM   #49
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There is a guy in N54tech with 200k on his e90 335.

My 07 has been fairing well. So far only lights have had to be replaced....

Buying a high mileage car is all about the confidence in the previous owner. I sold my 05 STi with 138k. That thing is still going to be kicking for a while.
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      11-08-2012, 10:20 AM   #50
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Quote:
Originally Posted by GTstunna612 View Post
forged pistons can you explain?
The early N54's have forged pistons, as well as the 1M and 335is motors. They proved to be overkill so BMW switched to cast ones for the later models. The forged pistons are stronger so they should hold more power reliably.
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      11-08-2012, 11:55 AM   #51
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I think I'm sitting at ~94k right now; I bought it at 40k about 3 years ago. ('07 steptronic coupe)

- HPFP and 3 injectors during the recall
- Mechatronic seal for transmission
- FMIC because the previous owner had 'repaired' some damage to it, poorly.

I'm pretty sure that's the only mechanical problems I've had; aside from that it's just peeling trim and normal wear and tear. The front bushings are pretty much shot at this point and need replacing, but that's to be expected.
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Last edited by georgelb; 11-08-2012 at 11:55 AM. Reason: model year
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      11-27-2012, 12:24 AM   #52
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Quote:
Originally Posted by Transport3r View Post
The early N54's have forged pistons, as well as the 1M and 335is motors. They proved to be overkill so BMW switched to cast ones for the later models. The forged pistons are stronger so they should hold more power reliably.
This is true above but I would make sure you also get a model with a Oil Cooler, this makes a huge difference. My prior e90 did not have one and it will run really hot all the time around 270-290... This LCI does not go past 230 even on 90+ degree weather... I'm not exactly what year they started (think march 08 production for the e90) but its good for the long run
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      11-27-2012, 07:47 AM   #53
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Quote:
Originally Posted by 335i_Charlotte View Post
This is true above but I would make sure you also get a model with a Oil Cooler, this makes a huge difference. My prior e90 did not have one and it will run really hot all the time around 270-290... This LCI does not go past 230 even on 90+ degree weather... I'm not exactly what year they started (think march 08 production for the e90) but its good for the long run
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      12-04-2012, 05:02 PM   #54
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08 335xi 117K, following big ticket items:
-radiator replaced
-mechatronic sleeve and trans gasket replaced
-water pump, thermostat, and coolant expansion tank replaced

interested in hearing more from other high mileage n54 owners. keep posting everyone!
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      12-04-2012, 05:20 PM   #55
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Quote:
Originally Posted by Transport3r
Quote:
Originally Posted by GTstunna612 View Post
forged pistons can you explain?
The early N54's have forged pistons, as well as the 1M and 335is motors. They proved to be overkill so BMW switched to cast ones for the later models. The forged pistons are stronger so they should hold more power reliably.
High-quality cast, Vishnu has an early production car as their shop car, when they opened the engine up, they proved certain internals to be forged and others that were not, I don't remember exactly what was forged and what wasn't, but the pistons were cast, a very high quality that it was easily mistake able with being forged
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      01-22-2013, 11:27 PM   #56
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Quote:
Originally Posted by CannonFodder View Post
07' with 75K here. The PO had the HPFP replaced in 2010. I haven't had any issues with it at all.
you have any mods to your car? I just hit 75k miles and im having cylinder 2 misfires and i cant get the dealer to fix the issue.
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      01-23-2013, 01:08 PM   #57
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Dude its gonna cost you regardless of miles..my car has 36k on the clock with used car CPO warranty and I just had to dump 3k into it to replace the clutch. You gotta pay to play tho. It's not like the 335i is a boring car..
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      01-23-2013, 01:08 PM   #58
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Dude its gonna cost you regardless of miles..my car has 36k on the clock with used car CPO warranty and I just had to dump 3k into it to replace the clutch. You gotta pay to play tho. It's not like the 335i is a boring car..
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      01-23-2013, 01:09 PM   #59
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Dude its gonna cost you regardless of miles..my car has 36k on the clock with used car CPO warranty and I just had to dump 3k into it to replace the clutch. You gotta pay to play tho. It's not like the 335i is a boring car..
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      01-24-2013, 01:47 PM   #60
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178K miles... bought at 48K, just HPFP so far. Wondering how long my water pump will go. I commute 170 miles a day, so mostly highway, but it still runs great.
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      01-24-2013, 02:40 PM   #61
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Quote:
Originally Posted by Transport3r View Post
The early N54's have forged pistons, as well as the 1M and 335is motors. They proved to be overkill so BMW switched to cast ones for the later models. The forged pistons are stronger so they should hold more power reliably.
Not true
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      01-24-2013, 02:45 PM   #62
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Not true
Which part brosef? There are 7 statements in my previous post.
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      01-24-2013, 03:04 PM   #63
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Quote:
Originally Posted by Transport3r View Post
Which part brosef? There are 7 statements in my previous post.
Provide a source? Have you heard an engine with forged pistons?

N54 has forged crankshaft and rods. Pistons are cast.

One source:

Quote:
Originally Posted by Mike@VAC
That seemed to be a popular theory, but when we opened up an '06 build we proved that wrong. Well partially. Aug 2006 build - forged cracked cap rod, cast piston.





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      01-24-2013, 03:15 PM   #64
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there are a few threads on here where people pulled forged pistons out of early 07 builds. Definitely some conflicting data around, but it seems that at least some early 07 builds have a fully forged rotating assembly.
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      01-24-2013, 03:48 PM   #65
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Quote:
Originally Posted by Transport3r
there are a few threads on here where people pulled forged pistons out of early 07 builds. Definitely some conflicting data around, but it seems that at least some early 07 builds have a fully forged rotating assembly.
Could you please provide some links? Everything I've been reading on this forum over the past years was all the talk about forged pistons in early models, however I have yet to read a legit claim. Not saying you are wrong, just wondering if you have some links to the claims.
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      01-24-2013, 03:50 PM   #66
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Quote:
Originally Posted by Dmacc View Post
Could you please provide some links? Everything I've been reading on this forum over the past years was all the talk about forged pistons in early models, however I have yet to read a legit claim. Not saying you are wrong, just wondering if you have some links to the claims.
I'll do some digging, been a while since i read them too.
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