ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Roadster and Coupe > General BMW Z4 Forum
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      03-24-2018, 10:49 AM   #1
BCZ4M
Registered
0
Rep
3
Posts

Drives: BMW Z4 M
Join Date: Sep 2017
Location: West Coast

iTrader: (0)

Exhaust Hub Tab and Cam Gear Bolt Check a Must

For those who have not yet upgraded their Vanos or at least checked their exhaust hub tabs and cam gear bolts, I suggest you do so soon. I just upgraded the Vanos on my new to me 06 Z4MC and discovered 1 broken tab on the exhaust hub and all 6 Cam Gear bolts backed out, one completely sheared the others almost sheared.
Appreciate 0
      03-24-2018, 11:39 AM   #2
Cyclops
Major
Cyclops's Avatar
Canada
1473
Rep
1,482
Posts

Drives: 09 E91 328i & 07 E86 M
Join Date: Nov 2007
Location: Milton

iTrader: (4)

Garage List
on my to do list
__________________
2007 #1432 ///M Coupe Silver Gray - KW V3 Coilovers - AFE Intake - Strong-Strut Brace - Status Grupee Headers - Super Sprint Race Exhaust & Xpipe - 19" Avant Garde M359 - Stoptech 380 6 pot BBK - EPIC Motorsports Tuning ////////////2009 328xi M-Tech E91 manual 6spd

- Instagram ->@e91kiter
Appreciate 0
      03-24-2018, 12:43 PM   #3
racerbruce
Brigadier General
racerbruce's Avatar
3849
Rep
3,004
Posts

Drives: 21 X3 & 13 335is E93
Join Date: Dec 2009
Location: Seattle

iTrader: (1)

VANOS

Inspected bolts, etc and the following completed during last yr's Insp II:

VANOS SOLENOID PACK SEALS S54
Removed vanos solenoid assembly and replaced vanos solenoid pack seal plate o- rings. Cleared faults. Cleaned residual oil. Bled cooling system and function tested vanos operation with no faults in DME.
__________________
Racerbruce
Appreciate 0
      03-24-2018, 04:14 PM   #4
Beedub
Major General
United Kingdom
423
Rep
5,327
Posts

Drives: 2007 Z4 M roadster vt2-500
Join Date: Sep 2007
Location: UK

iTrader: (0)

what miles are you guys at>>>???

my 06 is still only on 13k miles.... do i really need to tear this down at such low mile??? recommendations plz??
__________________
Z4MR VT2 - Clubsport build.
Multi award winning Detailing | Wrap | PPF specialists UK based - www.topwrapz.com
Appreciate 0
      03-24-2018, 08:28 PM   #5
Cyclops
Major
Cyclops's Avatar
Canada
1473
Rep
1,482
Posts

Drives: 09 E91 328i & 07 E86 M
Join Date: Nov 2007
Location: Milton

iTrader: (4)

Garage List
Quote:
Originally Posted by Beedub View Post
what miles are you guys at>>>???

my 06 is still only on 13k miles.... do i really need to tear this down at such low mile??? recommendations plz??
You seriously need to drive more.
__________________
2007 #1432 ///M Coupe Silver Gray - KW V3 Coilovers - AFE Intake - Strong-Strut Brace - Status Grupee Headers - Super Sprint Race Exhaust & Xpipe - 19" Avant Garde M359 - Stoptech 380 6 pot BBK - EPIC Motorsports Tuning ////////////2009 328xi M-Tech E91 manual 6spd

- Instagram ->@e91kiter
Appreciate 1
SaltyNC367.50
      03-24-2018, 11:09 PM   #6
BCZ4M
Registered
0
Rep
3
Posts

Drives: BMW Z4 M
Join Date: Sep 2017
Location: West Coast

iTrader: (0)

Quote:
Originally Posted by Beedub View Post
what miles are you guys at>>>???

my 06 is still only on 13k miles.... do i really need to tear this down at such low mile??? recommendations plz??
I'm at 69K. At 13K you're probably fine unless you track it. I would recommend getting something like the Beisan pump disk, which is designed to prevent exhaust hub tabs from breaking. The hubs are not cheap, cost me over $800 for it. Did my own labor, so it wasn't so bad but the work is time consuming, mainly due to access and would be expensive for a shop to do it. I was lucky, the broken tab was stuck in the pump and the bolts hadn't fully backed out. Not doing anything can get real expensive.

Last edited by BCZ4M; 03-24-2018 at 11:19 PM..
Appreciate 0
      03-25-2018, 03:14 AM   #7
StickMon
My other car is on Mars
StickMon's Avatar
United_States
635
Rep
3,124
Posts

Drives: 2006 MR
Join Date: Feb 2011
Location: Lo-Cal

iTrader: (1)

Quote:
Originally Posted by Beedub View Post
what miles are you guys at>>>???

my 06 is still only on 13k miles.... do i really need to tear this down at such low mile??? recommendations plz??
I bought mine with 39k miles and it had 3 bolts backed out and 3 sheared.
Exhaust tab broke at about 75 k miles.
Replaced the entire Vanos, timing chain guide, and rod bearings at about 125k mikes.
Closing in on 175k miles.

You need to drive yours more.
__________________
Warning: May contain traces of nuts.
Appreciate 0
      03-25-2018, 12:37 PM   #8
jdoublehcubed
Mechanical Engineer
United_States
96
Rep
1,025
Posts

Drives: 2006 Z4MR, Imola Red
Join Date: Jul 2012
Location: Anaheim, CA

iTrader: (1)

Quote:
Originally Posted by StickMon View Post
I bought mine with 39k miles and it had 3 bolts backed out and 3 sheared.
Exhaust tab broke at about 75 k miles.
Replaced the entire Vanos, timing chain guide, and rod bearings at about 125k mikes.
Closing in on 175k miles.

You need to drive yours more.
did you do the rod bearings yourself?
Appreciate 0
      03-25-2018, 04:14 PM   #9
Beedub
Major General
United Kingdom
423
Rep
5,327
Posts

Drives: 2007 Z4 M roadster vt2-500
Join Date: Sep 2007
Location: UK

iTrader: (0)

lone parent, business owner..... i barely have the time to sit down and catch a breath never mind driving a weekend car.... i'm just glad i've been able to keep it....

Sounds like even at these miles its worth looking into the vanos issues, alittle nervous to jump into it DIY but....... im always up for it, how difficult is this?? i can comfortably to the VC checks for reference.
__________________
Z4MR VT2 - Clubsport build.
Multi award winning Detailing | Wrap | PPF specialists UK based - www.topwrapz.com
Appreciate 0
      03-25-2018, 11:22 PM   #10
StickMon
My other car is on Mars
StickMon's Avatar
United_States
635
Rep
3,124
Posts

Drives: 2006 MR
Join Date: Feb 2011
Location: Lo-Cal

iTrader: (1)

Quote:
Originally Posted by jdoublehcubed View Post
did you do the rod bearings yourself?
Nope. Took it to Lang.
I can do a lot of stuff myself, but mostly up top.
My garage is too low to install a lift, and I couldn't see doing the rod bearings on jackstands.

You're local. Andrew told me he likes to do rod bearings.
__________________
Warning: May contain traces of nuts.
Appreciate 0
      03-31-2018, 02:29 AM   #11
jdoublehcubed
Mechanical Engineer
United_States
96
Rep
1,025
Posts

Drives: 2006 Z4MR, Imola Red
Join Date: Jul 2012
Location: Anaheim, CA

iTrader: (1)

Quote:
Originally Posted by StickMon View Post
Nope. Took it to Lang.
I can do a lot of stuff myself, but mostly up top.
My garage is too low to install a lift, and I couldn't see doing the rod bearings on jackstands.

You're local. Andrew told me he likes to do rod bearings.
He did my vanos exhaust hub about 2 years ago, top notch work. That's probably the only place I would trust to do bearings in LA. What did it set you back?

Fingers crossed, my lead levels are still quite low, so I'm hoping that job stays far into the future.
Appreciate 0
      03-31-2018, 08:00 AM   #12
WhatTheFetch
Private First Class
WhatTheFetch's Avatar
93
Rep
158
Posts

Drives: 07 Z4 M Coupe
Join Date: Jul 2017
Location: La Quinta, California

iTrader: (1)

Garage List
2019 Bullitt  [0.00]
2015 BMW M3  [0.00]
2018 Camaro 1SS 1LE  [0.00]
I'm having my Vanos rebuilt with the Beisan rattle kit, upper chain guide and upgraded pump disk this month. Also upgrading the cam bolts as well as a valve job. i will report back with the condition of the cam bolts and hub. Fingers crossed its okay! I bought my Z4MC last july with 41,900 miles, I have 43,700 on it now..

I'm also curious about the approximate cost of having the rod bearings done. I know that will need to be addressed down the road.. When I do the Vanos/Service I'm going to send an oil sample to Blackstone.

Last edited by WhatTheFetch; 03-31-2018 at 04:14 PM..
Appreciate 0
      03-31-2018, 08:41 PM   #13
StickMon
My other car is on Mars
StickMon's Avatar
United_States
635
Rep
3,124
Posts

Drives: 2006 MR
Join Date: Feb 2011
Location: Lo-Cal

iTrader: (1)

Survey says $1600-$1800 for rod bearings.
__________________
Warning: May contain traces of nuts.
Appreciate 0
      04-01-2018, 01:34 AM   #14
Finnegan
Dog Listener
Finnegan's Avatar
United_States
701
Rep
7,850
Posts

Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

iTrader: (22)

Quote:
Originally Posted by StickMon View Post
Survey says $1600-$1800 for rod bearings.
Yup. Material cost (bearings) went up this year. Relatively speaking very cheap compared to a motor rebuild or new motor.
Appreciate 0
      04-01-2018, 09:41 PM   #15
yousefnjr
salty cowboys fan
yousefnjr's Avatar
6114
Rep
3,392
Posts

Drives: ‘06 Z4MR, ‘20 X7, ‘22 M4x
Join Date: Dec 2012
Location: Bay Area, CA

iTrader: (2)

Vanos overhaul isn’t difficult, especially with Beisan’s guide which is excellent. Rod bearings aren’t so tough either (even on jack stands ), but you’ll have to roll your own guide via TIS, E46 M3 forums, and the nice folks here

Depending on what tools etc you already have, you can DIY bearings for ~$8-900 iirc
__________________
she’s home! '22 M4 Comp xDrive
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 03:35 PM.




zpost
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