E90Post
 


TNT Racewerks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > N52 330i head bolt issue



Reply
 
Thread Tools Search this Thread
      04-04-2012, 01:08 PM   #1
M3TA5IN
SRS BZN
14
Rep
159
Posts

Drives: 06 330i
Join Date: Apr 2011
Location: PA

iTrader: (0)

N52 330i head bolt issue

Hey guys, I just wanted you all to know I had the common issue where the head bolt head snaps off due to over torquing at the factory. Apparently this is only common on the 06 models and was fixed the next year but BMW doesn't really notice it. The bolt was right under the oil filter housing.

Anyway, I got BMW to pay the bill out of warrenty. I'm at 70k miles. It took a lot of interaction with the local service adviser and BMWNA, but in the end they paid for it.
__________________
Appreciate 0
      04-04-2012, 01:26 PM   #2
micano
Private First Class
micano's Avatar
United_States
6
Rep
104
Posts

Drives: BMW M2
Join Date: Dec 2009
Location: CT, USA

iTrader: (0)

N52 Head Bolts

Thanks for the info.
Appreciate 0
      04-04-2012, 06:02 PM   #3
Denny347
Major
Denny347's Avatar
347
Rep
1,076
Posts

Drives: 2008 M3 E90
Join Date: Aug 2010
Location: Indianapolis, IN

iTrader: (0)

Been there and done that. Although I paid for it myself. There were actually 2 more that were broken under the valve cover.
Appreciate 0
      04-04-2012, 08:41 PM   #4
blackbeast06
adrenergic stimulation
blackbeast06's Avatar
45
Rep
405
Posts

Drives: 2019 M4cs San Marino Blue
Join Date: Dec 2009
Location: Columbus

iTrader: (4)

Garage List
2006 325i  [0.00]
Quote:
Originally Posted by M3TA5IN View Post
Hey guys, I just wanted you all to know I had the common issue where the head bolt head snaps off due to over torquing at the factory. Apparently this is only common on the 06 models and was fixed the next year but BMW doesn't really notice it. The bolt was right under the oil filter housing.

Anyway, I got BMW to pay the bill out of warrenty. I'm at 70k miles. It took a lot of interaction with the local service adviser and BMWNA, but in the end they paid for it.
Was there an indication that led you to bleive that the bolt was snapped or did you just see that it was snapped? Is the bolt visible without removing anything?
__________________
2015 M4 Mineral White/Sakhir Orange 6MT
Retired 2007 335i Montego Blue/Saddle Brown 6 MT
Retired 2006 325i Black/Black 6MT

[IMG]m4 by senntera, on Flickr[/IMG]
Appreciate 0
      04-05-2012, 07:19 AM   #5
M3TA5IN
SRS BZN
14
Rep
159
Posts

Drives: 06 330i
Join Date: Apr 2011
Location: PA

iTrader: (0)

Quote:
Originally Posted by blackbeast06
Quote:
Originally Posted by M3TA5IN View Post
Hey guys, I just wanted you all to know I had the common issue where the head bolt head snaps off due to over torquing at the factory. Apparently this is only common on the 06 models and was fixed the next year but BMW doesn't really notice it. The bolt was right under the oil filter housing.

Anyway, I got BMW to pay the bill out of warrenty. I'm at 70k miles. It took a lot of interaction with the local service adviser and BMWNA, but in the end they paid for it.
Was there an indication that led you to bleive that the bolt was snapped or did you just see that it was snapped? Is the bolt visible without removing anything?
I have a good relationship with my local dealer. I get them to match tischer on parts so in return I get my oil changed there which I like cuz they inspect the car and let me know if anything is wrong. That's how I knew it was snapped.

The one that is most common to snap is visible though, it's right under the oil filter housing. I will take a picture later to show you better. You can clearly see it. The hard part though is sometimes the head snaps off and will sit on the top end right next to it making it look like its actually good, but it's not.
__________________
Appreciate 0
      04-05-2012, 01:47 PM   #6
Alvine90
Private First Class
6
Rep
175
Posts

Drives: slow
Join Date: Apr 2012
Location: Arcadia

iTrader: (3)

if I had my cylinder head replaced, would I have the newer bolts or the ones from the factory?
__________________
Appreciate 0
      04-05-2012, 06:48 PM   #7
Denny347
Major
Denny347's Avatar
347
Rep
1,076
Posts

Drives: 2008 M3 E90
Join Date: Aug 2010
Location: Indianapolis, IN

iTrader: (0)

Quote:
Originally Posted by Alvine90 View Post
if I had my cylinder head replaced, would I have the newer bolts or the ones from the factory?
New ones, they are not reusable.
Appreciate 0
      04-05-2012, 06:56 PM   #8
Denny347
Major
Denny347's Avatar
347
Rep
1,076
Posts

Drives: 2008 M3 E90
Join Date: Aug 2010
Location: Indianapolis, IN

iTrader: (0)

Appreciate 0
      04-08-2012, 09:54 PM   #9
Volasko
Colonel
Volasko's Avatar
705
Rep
2,605
Posts

Drives: 06 330i E90, 18 530xe G30
Join Date: Dec 2010
Location: Toronto

iTrader: (2)

Garage List
I did my spark plugs this weekend and found my bottom left head bolt snapped. It was clear as day once I removed my engine cover, which can be done after removing the plastic cabin air filter frame. I still have a CPO warranty left and will be bringing this up with my service advisory right away!
Appreciate 0
      04-12-2012, 11:12 PM   #10
Cisco661
Cisco661
Cisco661's Avatar
United_States
61
Rep
974
Posts

Drives: 2006 Monaco Blue 330I
Join Date: Jul 2011
Location: California

iTrader: (17)

Garage List
2006 BMW 330i  [0.00]
i too have a 330i. i didnt know that it was a common issue among 330i's. im going to make sure i check mine out. i think it had one replaced under warranty from a previous owner. great info by the way. does anyone know of any other things i should look out for? my 330i has 66k miles, sports pack, premium pack, xenon adaptives, logic7, idrive, and is a steptronic. under warranty other than the head bolt it also had a steering angle sensor and starter motor replaced. im just out of warranty and decided to go without an extended one. from what ive read the 330i seems to be very reliable. im lookin to keep the car past 100k.
Appreciate 0
      04-13-2012, 08:44 PM   #11
ska///235i
***** noob
ska///235i's Avatar
United_States
1370
Rep
10,479
Posts

Drives: 325xi>M235i>428GCx Mspor
Join Date: Sep 2005
Location: Boston

iTrader: (34)

Garage List
2006 325xi  [0.00]
2006 known issues (some apllies to all e9x)

steering column lock, have to replace entire steering column

Vanos solenoids, can be cleaned or replace

ignition coil fail, replace with new coil
__________________
2006 325xi (Sold)
2014 M235I (Current)
2015 428xi Gran Coupe (STB)
Appreciate 0
      04-15-2012, 10:17 PM   #12
josebmw
Private
5
Rep
51
Posts

Drives: 08 335i sedan
Join Date: Apr 2012
Location: NC

iTrader: (4)

This just happens with the original aluminum bolts identified with a blue painted head, there is a new updated aluminum bolts that are forged.
Appreciate 0
      08-11-2012, 05:08 PM   #13
Brad from the OC
Private First Class
United_States
15
Rep
153
Posts

Drives: 325Ia Alpine White
Join Date: May 2006
Location: Southern California

iTrader: (0)

Quote:
Originally Posted by Cisco661 View Post
i too have a 330i. i didnt know that it was a common issue among 330i's. im going to make sure i check mine out. i think it had one replaced under warranty from a previous owner. great info by the way. does anyone know of any other things i should look out for? my 330i has 66k miles, sports pack, premium pack, xenon adaptives, logic7, idrive, and is a steptronic. under warranty other than the head bolt it also had a steering angle sensor and starter motor replaced. im just out of warranty and decided to go without an extended one. from what ive read the 330i seems to be very reliable. im lookin to keep the car past 100k.
This same aluminum head bolt broke on my 06 325i. From some of the forums, the same bolt has broken on other 06 325i also. No immediate problems occured due to the breakage and if it wasn't for the forums, I wouldn't have even known it was broken. I had 47K miles on it when I found the bolt, but it could have been broken for some time. I just replaced the bolt and didn't go to the dealership.
Appreciate 0
      01-08-2013, 04:39 PM   #14
barkles
Private First Class
8
Rep
109
Posts

Drives: 2007 328i Sport Wagon
Join Date: Aug 2011
Location: California

iTrader: (0)

Quote:
Originally Posted by M3TA5IN View Post
Hey guys, I just wanted you all to know I had the common issue where the head bolt head snaps off due to over torquing at the factory. Apparently this is only common on the 06 models and was fixed the next year but BMW doesn't really notice it. The bolt was right under the oil filter housing.

Anyway, I got BMW to pay the bill out of warrenty. I'm at 70k miles. It took a lot of interaction with the local service adviser and BMWNA, but in the end they paid for it.
Any more information on how to get BMWNA to pay for this? I have an 07 with a 10/06 build date and just over 80k miles.
__________________
80 320i + 07 328i Wagon + 09 Cayman + 65 Volvo 1800S
Appreciate 0
      01-09-2013, 12:09 AM   #15
DC_Oldboy
Q(*.*)-D Q-(^.~Q)
DC_Oldboy's Avatar
United_States
214
Rep
5,378
Posts

Drives: like an old person.
Join Date: Aug 2009
Location: Bothell, WA

iTrader: (39)

Garage List
2006 BMW 330i  [8.48]
No recall on this?
__________________
Appreciate 0
      01-31-2013, 08:59 AM   #16
8355adam
New Member
0
Rep
11
Posts

Drives: 330i
Join Date: Jan 2013
Location: Northern va

iTrader: (0)

Sorry to bring up an old thread but i want to let the world know (or at least BMWNA) that the head bolts they used for 06 models were completely deficient. I had to have a bunch of them replaced at 70k which ofcourse meant me having to fork out $$ for a VCC and HG. I really think they should have had some goodwill since this is a typical issue with 330i e90s. this sort of thing really shouldnt happen so early in life of a $40k+ car.
Appreciate 0
      09-26-2014, 10:28 AM   #17
jarettg
New Member
Canada
0
Rep
8
Posts

Drives: 2006 325xi Alpine White
Join Date: Oct 2009
Location: Saskatchewan

iTrader: (0)

i took my 06 325xi in for a valve cover gasket replacement as it was leaking oil. the tech broke one of the engine bolts while removing it. bmw dealership tried charging me an extra 1.5 hours labor at $155 an hour to fix their mistake, on top of the $850 job to replace the gasket.
Appreciate 0
      09-26-2014, 01:20 PM   #18
hassmaschine
Major General
United_States
3973
Rep
7,215
Posts

Drives: "NBO" 330i
Join Date: Jun 2014
Location: earth

iTrader: (0)

how many of these threads are you going to spam your posts in? one would have been plenty..
Appreciate 0
Reply

Bookmarks


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



All times are GMT -5. The time now is 08:06 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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