N54Tech.com - International Turbo Racing Discussion
(#1)
Old
410bn's Avatar
410bn 410bn is offline
Junior Member
 
Posts: 65
Join Date: May 2014
Car: M
Default Low/no boost - nasty whine under boost (video) - 05-17-2019, 01:56 PM

Hey guys.

Last night, I got into it in second gear, noticed an immediate loss of power and a whine sound under any amount of boost. It wont build more than 1 or 2 lbs now.

No smoke. If I pull the vacuum lines off the boost solenoids, no whine. No codes or limp mode. It's hard to tell exactly where the sound is coming from but it seems like it's coming from the rear drivers side of the engine. The whine doesnt sound like its coming from around the intercooler and I feel no leaks around the charge pipe.

Do you guys have any suggestions or ideas of what to check? I'm actually on vacation in OCMD so I'm in a bad spot.

https://youtu.be/RtgVkvKv5Yc
Reply With Quote
(#2)
Old
Vorsprung_CJB's Avatar
Vorsprung_CJB Vorsprung_CJB is offline
Pessimistic Poster
 
Posts: 1,232
Join Date: Jun 2011
Car: 135i N54
Default 05-17-2019, 03:25 PM

Unfortunately, sounds to me like something got sucked into the turbo and damaged the compressor.

Ref:
Bad turbo on BMW 2008 N54 - YouTube

You could get a borescope on Amazon and send it down the intakes to check.
Reply With Quote
(#3)
Old
ManiN54's Avatar
ManiN54 ManiN54 is offline
New Member
 
Posts: 29
Join Date: Aug 2018
Car: 2007 335i FBO stock turbos
Default 05-17-2019, 04:14 PM

Quote:
Originally Posted by 410bn
Hey guys.

Last night, I got into it in second gear, noticed an immediate loss of power and a whine sound under any amount of boost. It wont build more than 1 or 2 lbs now.

No smoke. If I pull the vacuum lines off the boost solenoids, no whine. No codes or limp mode. It's hard to tell exactly where the sound is coming from but it seems like it's coming from the rear drivers side of the engine. The whine doesnt sound like its coming from around the intercooler and I feel no leaks around the charge pipe.

Do you guys have any suggestions or ideas of what to check? I'm actually on vacation in OCMD so I'm in a bad spot.

https://youtu.be/RtgVkvKv5Yc
That’s definitely a blown turbo or turbos. Upgrade time


1/4mile 11.8@117.96 19psi
07 E92 335i (the Alpträum) | Alpine wht/ Seibon carbon hood/ trunk| M parallel wheels| street tires
FBO| modified oem airbox lid w/K&N drop-in| stock turbos/ stock inlets| Walbro 465lph LPFP| Jb4/mhd backend flash| Map 6 w/E60 No Meth| Built and tuned by me.
Reply With Quote
(#4)
Old
410bn's Avatar
410bn 410bn is offline
Junior Member
 
Posts: 65
Join Date: May 2014
Car: M
Default 05-17-2019, 05:01 PM

Ugh that's rough. They're RBs with roughly 30 to 40k on them. Question now is to get them rebuilt or go a different route...
Reply With Quote
(#5)
Old
ManiN54's Avatar
ManiN54 ManiN54 is offline
New Member
 
Posts: 29
Join Date: Aug 2018
Car: 2007 335i FBO stock turbos
Default 05-17-2019, 05:20 PM

It’s just excessive shaft-play. It’s worth looking into rebuilding.


1/4mile 11.8@117.96 19psi
07 E92 335i (the Alpträum) | Alpine wht/ Seibon carbon hood/ trunk| M parallel wheels| street tires
FBO| modified oem airbox lid w/K&N drop-in| stock turbos/ stock inlets| Walbro 465lph LPFP| Jb4/mhd backend flash| Map 6 w/E60 No Meth| Built and tuned by me.
Reply With Quote
(#6)
Old
Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
Super Moderator
 
Posts: 4,448
Join Date: Apr 2014
Car: E92 335XI
Default 05-17-2019, 11:58 PM

Quote:
Originally Posted by 410bn
Ugh that's rough. They're RBs with roughly 30 to 40k on them. Question now is to get them rebuilt or go a different route...
RB generally has a pretty solid rebuild / upgrade policy.

I’d shoot him an email



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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




vBulletin Skin developed by: vBStyles.com
Copyright © 2007 - 2018, N54tech.com