Upgrade internals in stock turbos?

RequestTheOverhead · 01-09-2013, 11:42 PM

Sorry everyone, I'm on my phone so I can't do a search....

I've owned a couple Audi and VW turbo cars and I know people would upgrade the stock ko3's with different internals at a cheaper cost than upgrading to ko4's or others and was wondering if anyone has done this with our turbos? Reason I ask is I'm starting to hear the siren sound so I know at least one is slowly starting to disintegrate itself.

E90Company · 01-10-2013, 12:05 AM

I have the siren as well as many others. Don't worry about it. This is fully warmed up:

EJ_3 · 01-10-2013, 12:11 AM

Google Rob Beck Turbos, I take it that you have a smart phone.

Ænema · 01-10-2013, 12:36 AM

Mechanically speaking the N54 is a fucking champ. There are hundreds of 400+whp daily driven N54s running around and, AFAIK, there is yet to be any mechanical failures that are related to increased power output.

Hell, even the record holders are stock.

RequestTheOverhead · 01-10-2013, 01:30 AM

Quote:

Originally Posted by E90Company

I have the siren as well as many others. Don't worry about it. This is fully warmed up:

Mine ins't as loud as as that yet... just noticeable though my custom exhaust. Only started happening about a week ago. I know its a common occurrence amongst many of the n54's, but the sound still bothers me. Luckily I have yet to replace a turbo on any of the TC cars I've owned through the years (knock on wood!).

Quote:

Originally Posted by Manny_World

Google Rob Beck Turbos, I take it that you have a smart phone.

Cool, thanks! I've obviously read about RB's on here but I guess I never realized that they are stock turbos with upgraded internals. Now I feel dumb for starting this thread

Quote:

Originally Posted by Ænema

Mechanically speaking the N54 is a fucking champ. There are hundreds of 400+whp daily driven N54s running around and, AFAIK, there is yet to be any mechanical failures that are related to increased power output.

Hell, even the record holders are stock.

You are right, it's definitely a champ... I think much more than the either of the engines in my audi's of VW's. Keeping my fingers crossed (and knocking on wood again...)

Thanks for the replies and info everyone!

cleex024 · 01-10-2013, 02:50 AM

i thought the siren was normal...ive had it for a while now like 15k miles. seems like everything spools up fine.

i even dynoed with the siren and pulled off 370whp and 410 wtq

JamesM3M5 · 01-10-2013, 02:36 PM

Rob Beck or Vargas turbos will be your best bet. Vargas has upgraded WG shafts and better seals than factory. RB sells one version of stock-housing turbos, and Vargas sells a stage 1 (very close to stock with upgraded internal seals, WG parts, etc) or a stage 2 with increased flow, similar to the RB turbos.

Ferruccio · 01-10-2013, 05:08 PM

It has been emphasized to me by one of the vendors that the siren sound is *not* normal, and that it is likely that they will need to be replaced in the near future. However, I have heard the siren noise on tons of non-BMW vehicles, so, I don't know. There does not seem to be a general consensus on this. I only hear the siren noise at low turbo RPMs when the engine is cold. After about a minute or two, the sound goes away for me. I have had this sound for around 10k miles, at least.

I, myself, am debating between Rob Beck and Vargas. I do not need anything as extreme as a single turbo setup.

cleex024 · 01-10-2013, 06:28 PM

Quote:

Originally Posted by Ferruccio

It has been emphasized to me by one of the vendors that the siren sound is *not* normal, and that it is likely that they will need to be replaced in the near future. However, I have heard the siren noise on tons of non-BMW vehicles, so, I don't know. There does not seem to be a general consensus on this. I only hear the siren noise at low turbo RPMs when the engine is cold. After about a minute or two, the sound goes away for me. I have had this sound for around 10k miles, at least.

I, myself, am debating between Rob Beck and Vargas. I do not need anything as extreme as a single turbo setup.

yup same here...i think im going to go with vargas stg 2...maybe rob becks.

quattrosaint · 01-10-2013, 06:46 PM

I siren everyone is refering to in this Video is just normal turbo spool. When a turbo is going it sounds like a dentist drill, you will know when you hear it.

01-09-2013, 11:42 PM	#1
RequestTheOverhead Going Mach Chicken 2 Rep 92 Posts Drives: e90 pre-LCI 335 Join Date: Jun 2012 Location: Denver, CO iTrader: (1) Garage List '98 Honda Superhawk ... [0.00] 2007 BMW 335xi [4.00]	Upgrade internals in stock turbos? Sorry everyone, I'm on my phone so I can't do a search.... I've owned a couple Audi and VW turbo cars and I know people would upgrade the stock ko3's with different internals at a cheaper cost than upgrading to ko4's or others and was wondering if anyone has done this with our turbos? Reason I ask is I'm starting to hear the siren sound so I know at least one is slowly starting to disintegrate itself. __________________ '07 335xi, Alpine White \| Cold, "Sport", and Luxury packages \| Tinted \| OEM Black Lines \| JB4 \| DCI \| ER FMIC \| Forge DV's \| Custom exhaust with secondary cat delete, Magnaflow mufflers, black Dimisa Tips \| Staggered 18" V718's, Matte Black \| Flappy Paddles \| Titanium CF Trim Wrap \| BMW Performance Shifter and E-Brake Handle \|
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01-10-2013, 12:05 AM	#2
E90Company Major General 90 Rep 6,137 Posts Drives: Car Join Date: Mar 2012 Location: FL iTrader: (2)	I have the siren as well as many others. Don't worry about it. This is fully warmed up:
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01-10-2013, 12:11 AM	#3
EJ_3 Colonel 208 Rep 2,827 Posts Drives: e92 335i, e34 525i & e60 530i Join Date: Aug 2011 Location: N Las Vegas iTrader: (13) Garage List 2007 BMW 335i [4.17] 2016 Ram 1500 Sport [4.00] 1994 BMW 525i [5.00] 2007 BMW 530i [4.33]	Google Rob Beck Turbos, I take it that you have a smart phone. __________________ click here for mods
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01-10-2013, 12:36 AM	#4
Ænema Captain 10 Rep 961 Posts Drives: BMW Join Date: Aug 2012 Location: Arizona Bay iTrader: (0)	Mechanically speaking the N54 is a fucking champ. There are hundreds of 400+whp daily driven N54s running around and, AFAIK, there is yet to be any mechanical failures that are related to increased power output. Hell, even the record holders are stock. __________________ "I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
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01-10-2013, 02:50 AM	#6
cleex024 Major 39 Rep 1,481 Posts Drives: 2008 BMW 335i Coupe Join Date: Mar 2011 Location: Woodbridge iTrader: (2)	i thought the siren was normal...ive had it for a while now like 15k miles. seems like everything spools up fine. i even dynoed with the siren and pulled off 370whp and 410 wtq __________________ Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
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01-10-2013, 02:36 PM	#7
JamesM3M5 Some dude 46 Rep 1,778 Posts Drives: E28 M5, E92 335i Join Date: Sep 2011 Location: Northern VA iTrader: (0)	Rob Beck or Vargas turbos will be your best bet. Vargas has upgraded WG shafts and better seals than factory. RB sells one version of stock-housing turbos, and Vargas sells a stage 1 (very close to stock with upgraded internal seals, WG parts, etc) or a stage 2 with increased flow, similar to the RB turbos. __________________ RRT Racing E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel. Vishnu PWM methanol custom trunk mount, Diffsonline 3-clutch Salisbury custom diff, Ohlins Road and Track coilovers, Vorshlag camber plates, much more... E28 M5 w/ buncha stuff, R171 SLK350
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01-10-2013, 05:08 PM	#8
Ferruccio First Lieutenant 13 Rep 363 Posts Drives: 2010 335i Join Date: May 2011 Location: Colorado Springs, CO iTrader: (1)	It has been emphasized to me by one of the vendors that the siren sound is not normal, and that it is likely that they will need to be replaced in the near future. However, I have heard the siren noise on tons of non-BMW vehicles, so, I don't know. There does not seem to be a general consensus on this. I only hear the siren noise at low turbo RPMs when the engine is cold. After about a minute or two, the sound goes away for me. I have had this sound for around 10k miles, at least. I, myself, am debating between Rob Beck and Vargas. I do not need anything as extreme as a single turbo setup.
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01-10-2013, 06:46 PM	#10
quattrosaint Lieutenant 16 Rep 554 Posts Drives: Fast Join Date: Mar 2010 Location: Dallas iTrader: (5)	I siren everyone is refering to in this Video is just normal turbo spool. When a turbo is going it sounds like a dentist drill, you will know when you hear it. __________________ [size="2"]335 E92 Space Gray/Coral/Aluminum/6MT
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