Z3MCoupe.com Forums

Go Back   Z3MCoupe.com Forums > M Coupé Technical > Technical Discussion
HOME Gallery Register Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 21-07-2011, 05:59 PM
Dave P's Avatar
Dave P Dave P is offline
Administrator
 
Join Date: Dec 2008
Location: Cheshire
Posts: 22,905
Default S50 vanos question

Has anyone had a S50 vanos blow at anytime after fitting the uprated bolts? I am interested to see if the bolts cure the problem 100%.
__________________
Reply With Quote
  #2  
Old 21-07-2011, 09:08 PM
indy indy is offline
Senior Member
 
Join Date: Aug 2009
Posts: 4,351
Default

Quote:
Originally Posted by dave p View Post
Has anyone had a S50 vanos blow at anytime after fitting the uprated bolts? I am interested to see if the bolts cure the problem 100%.
i dont think the bolts are the only problem, i think some vanos have problems with the actual seals, solenoids and gears.

changing the bolts and seals is a cheap + easy preventative measure, but not the ultimate "stop your vanos spurting everywhere" tactic.
__________________

Click here to email me
Reply With Quote
  #3  
Old 21-07-2011, 09:40 PM
johnnyb's Avatar
johnnyb johnnyb is offline
Member
 
Join Date: Feb 2011
Posts: 91
Default

I've got a question too. If the vanos has been replaced by BMW is it still liable to fail or have the replacements addressed the problems?
Reply With Quote
  #4  
Old 21-07-2011, 09:43 PM
indy indy is offline
Senior Member
 
Join Date: Aug 2009
Posts: 4,351
Default

Quote:
Originally Posted by johnnyb View Post
I've got a question too. If the vanos has been replaced by BMW is it still liable to fail or have the replacements addressed the problems?
i think BMW just replace the unit with a brand new one, which would still have the usual failing parts, just have a new lease of life, so will last longer than the old one that was removed? prob only a matter of time before things go wrong with them again

ive had an M3 evo before, that had 4 replacement vanos' under warranty!!!

anyway im no expert, but this is from my own experience/s
__________________

Click here to email me
Reply With Quote
  #5  
Old 21-07-2011, 09:53 PM
johnnyb's Avatar
johnnyb johnnyb is offline
Member
 
Join Date: Feb 2011
Posts: 91
Default

I thought that might be the case, better get some bolts and a filter ordered...
Reply With Quote
  #6  
Old 27-07-2011, 06:23 PM
kwoffa kwoffa is offline
Moderator
 
Join Date: Apr 2007
Location: Kingswood,Surrey
Posts: 3,247
Default

The filter can be cleaned by soaking in petrol...altho they are not that expensive...
Reply With Quote
  #7  
Old 16-09-2012, 06:13 PM
johnnyb's Avatar
johnnyb johnnyb is offline
Member
 
Join Date: Feb 2011
Posts: 91
Default

I'll just drag this old thread back to the top as I've commented in it before rather than start a new one.

So I've been to Silverstone today which is around 100 miles each way so obviously the car was nice and hot when I got home. As I drove into the garage I could hear an irregular knocking noise coming from the engine

I popped the bonnet and at first thought it was the alternator bearings that had worn but couldn't quite locate the noise. I then got really close to the front of the engine and it seems to be coming from the vanos as I could feel it knocking in time to the noise when I placed my hand on the front of the vanos.

Any ideas. The noise is pretty irregular and knocks maybe once every four or five seconds with sometimes a gap before it does it again. The engine seems to be running fine with no idle problems.
Reply With Quote
  #8  
Old 16-09-2012, 07:57 PM
indy indy is offline
Senior Member
 
Join Date: Aug 2009
Posts: 4,351
Red face

Quote:
Originally Posted by johnnyb View Post
I'll just drag this old thread back to the top as I've commented in it before rather than start a new one.

So I've been to Silverstone today which is around 100 miles each way so obviously the car was nice and hot when I got home. As I drove into the garage I could hear an irregular knocking noise coming from the engine

I popped the bonnet and at first thought it was the alternator bearings that had worn but couldn't quite locate the noise. I then got really close to the front of the engine and it seems to be coming from the vanos as I could feel it knocking in time to the noise when I placed my hand on the front of the vanos.

Any ideas. The noise is pretty irregular and knocks maybe once every four or five seconds with sometimes a gap before it does it again. The engine seems to be running fine with no idle problems.

description sounds like mine did?

www.z3mcoupe.com/forum/showthread.php?t=10534
__________________

Click here to email me
Reply With Quote
  #9  
Old 16-09-2012, 08:23 PM
johnnyb's Avatar
johnnyb johnnyb is offline
Member
 
Join Date: Feb 2011
Posts: 91
Default

Difficult to tell but is yours knocking in time to the engine speed and with quite a regular rhythm? Mine seems quite random and knocks every few seconds with no pattern to the noise (at least that I've noticed).

I need to investigate further, raise the revs and diferent engine temperatures as I was only listening to it at idle with a hot engine after two hours on the motorway. I can definately feel the knocking through the vanos housing though.
Reply With Quote
  #10  
Old 16-09-2012, 08:52 PM
kwoffa kwoffa is offline
Moderator
 
Join Date: Apr 2007
Location: Kingswood,Surrey
Posts: 3,247
Default

I had my vanos replaced by Steve @Mr vanos using uprated seals,even then there was still a problemas one pair was not working properly..caused by a tiny bit of swath being trapped..just make sure it is the Vanos! and not something else Noises travel!
Reply With Quote
Reply

Tags
vanos

Thread Tools
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


All times are GMT. The time now is 10:26 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2018, vBulletin Solutions, Inc.