Notices
 

  

User Tag List

Thread: Audi V8 Variable stage inlet vacuum concern....?

Results 1 to 5 of 5
  1. Audi V8 Variable stage inlet vacuum concern....? 
    #1
    Join Date
    May 2012
    Location
    suffolk
    Posts
    143
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    I have a 2001 Audi S6 with the 4.2 40v V8 ANK engine with the internal flaps on the inlet, giving better torque throughout the rev range, like so






    Whilst replacing some vacuum pipes elsewhere and i found something that i don't think is quite right. I looked it up and this is how it should be. Blue is vacuum from the inlet to both solenoids, then one solenoid opens the line up for one flap arm in red and the other solenoid opens up for the other flap in green.






    Mine however is plumbed in so both flap plungers are run off one solenoid in red. Then the other solenoid opens a flap in the airbox to let 'hot air' into the airbox, in brown.





    this is where the brown feed goes






    Is this correct? As it is i haven't got a 3 stage inlet i only have a 2, surely? there are no extra plugs for a solenoid that i can see, and no spare solenoids? what should power this flap in the airbox? As i see it, it should be piped up as the top diagram and the airbox flap should come from elsewhere? or is this a different setup where it is only a 2 stage inlet?


    Any help greatly received
     
    0 0 0
     

  2. Re: Audi V8 Variable stage inlet vacuum concern....? 
    #2
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,535
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    28 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    697 Post(s)
    Isn't there a vacuum pipe map on the inside of the bonnet?
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  3. Re: Audi V8 Variable stage inlet vacuum concern....? 
    #3
    Join Date
    May 2012
    Location
    suffolk
    Posts
    143
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Just checked back on photo's and it doesnt look like it. The only sticker looks like airconditioning specs or something like that.
     
    0 0 0
     

  4. Re: Audi V8 Variable stage inlet vacuum concern....? 
    #4
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,535
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    28 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    697 Post(s)
    Intake air changeover valve -N335
    Vacuum diagram of solenoid valves -N156 and -N335

    1 - Solenoid valve for intake manifold with changeover function -N156. Actuation for both vacuum units at intake pipe
    2 - Intake air changeover valve -N335. Actuation for the flap in air filter
    a - T-piece for the vacuum supply of solenoid valve-N156
    b - Vacuum pressure supply from intake pipe
    c - Vacuum pressure hose to flap in air filter
    d - T-piece for the vacuum supply of solenoid valve-N156
    e - T-piece for the vacuum supply of solenoid valve -N335 and the vacuum reservoir
    f - Vacuum line to vacuum reservoir

    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  5. Re: Audi V8 Variable stage inlet vacuum concern....? 
    #5
    Join Date
    May 2012
    Location
    suffolk
    Posts
    143
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Thanks for your reply, that is exactly how mine is plumbed in, even down to where the joiners are.

    Looks like the S6 ANK engine is a 2 stage inlet and not a 3 stage as previously informed, but at least i know its piped up correctly.
     
    0 0 0
     

Similar Threads

  1. Variable inlet manifold, when does it open
    By tommo2 in forum Audi A6 - C5 Forum - 1998 - 2004
    Replies: 0
    Last Post: 23-02-2013, 01:05 AM
  2. Audi S7 Needed for Stage 1 Preliminary Dyno!
    By Evan@APR in forum A7 - S7
    Replies: 0
    Last Post: 21-01-2013, 05:10 PM
  3. inlet manifold vacuum leak
    By king.lion in forum Passat - B5 Forum - 1997 -2005
    Replies: 0
    Last Post: 05-08-2009, 09:30 PM
  4. Vast 35-metre audi ‘monument’ takes centre stage at goodwood
    By stuart in forum "How To" Guides - Vehicle Related
    Replies: 0
    Last Post: 03-07-2009, 07:53 PM
  5. Replies: 0
    Last Post: 03-07-2009, 07:53 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  




  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -