Go Back   AudiWorld Forums > Technical Discussion > Motors > 12v V6 Discussion
Sign in using an external account
Register Forgot Password?

Notices

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 02-21-2006, 05:15 AM   #1
Audi Logic
AudiWorld Super User
Account #: 61186
 
Join Date: Aug 2003
Posts: 3,482
Default Motor Question?


First I would like to thank whomever the top picture belongs to.. sorry I forgot your user ID.

OK heres my ?
on manual cars the vac line pictured above runs right to the brake booster..

but on auto's it splits. one side goes to the brake booster and the other connects to the driver side valve cover which then goes to the plenum..




can anyone tell me if the two setups are interchangeable, or exactly what the auto version does.
I'm considering replacing the pipes and if the simple manual version would work I would prefer to go with that one..

Audi Logic is offline   Reply With Quote
Old 02-21-2006, 06:12 AM   #2
Edd W
AudiWorld Super User
Account #: 41826
 
Join Date: Aug 2002
Posts: 4,355
Default Could it be related to cruise control unit?

__________________
Q7 4.2Tdi S-Line 2008 - another V8 diesel!
A8 4.2Tdi, 06, Grey/Grey - my new toy - how can a diesel be this fast? SOLD 21/06/2013
2010 A4 2.0tdi 6 spd SE Executive avant - dark blue & Vanilla - Wife's new one.
VW Touareg 06 30k 6spd 2.5Tdi - Wifey's new one, A4 was not big enough!
A6 2.7t 01my 6spd Avant 51k miles - Sold Dec 2011 - Gone to Banbury
A4 2.0FSi SE 03.8 22k miles - Wifey's new one - the golf was not luxurious enough. Sold 30/08/08 - gone to Heathrow.
Golf Tdi 03.08 130pd, 6spd, 19k miles - Sold 8th November 2006 - gone to Coventry!
A6 2.8q 98.11 115K miles - sold 20th Feb 2006 - gone to Kidderminster.
100 2.8q 92.1 147k miles - Sold 6th July 2004 - its new home is Edinburgh
A4 1.6 97.8 99k miles - Sold 12th Feb 03
VW Golf Gti 86 22k miles 2.0 Oettinger 190bhp, lowered, lightened and quick and sold 23/03/08. Gone to Coventry.
Edd W is online now   Reply With Quote
Old 02-21-2006, 07:40 AM   #3
Audi Logic
AudiWorld Super User
Account #: 61186
 
Join Date: Aug 2003
Posts: 3,482
Default Here is a diagram of both systems




________________________________________________



Audi Logic is offline   Reply With Quote
Old 02-22-2006, 04:52 AM   #4
Audi Logic
AudiWorld Super User
Account #: 61186
 
Join Date: Aug 2003
Posts: 3,482
Default anybody?

Audi Logic is offline   Reply With Quote
Old 02-22-2006, 11:44 AM   #5
moribundman
AudiWorld Super User
Account #: 50038
 
Join Date: Jan 2003
Posts: 9,298
Default I suspect the auto-version has a more complex system for a reason

... which unfortunately eludes me.

Are you sure we don't have a one-way valve between the IM and brake booster on the 12v with the MT?
__________________

Mhmm, donuts...
moribundman is offline   Reply With Quote
Old 02-22-2006, 12:42 PM   #6
Audi Logic
AudiWorld Super User
Account #: 61186
 
Join Date: Aug 2003
Posts: 3,482
Default It eludes me as well, I 99% positive there is no valves on the manual

look at the first pic in the post.. it is just as I remembered it from when evol and I changed his valley pan gasket.. Just one pipe no stops along the way...
Audi Logic is offline   Reply With Quote
Old 02-22-2006, 06:12 PM   #7
Audi Logic
AudiWorld Super User
Account #: 61186
 
Join Date: Aug 2003
Posts: 3,482
Default OK I was 99% wrong

in the first pic the part of the line that is held by the clip is the check valve, its built into the line
Audi Logic is offline   Reply With Quote
Old 02-22-2006, 09:43 PM   #8
moribundman
AudiWorld Super User
Account #: 50038
 
Join Date: Jan 2003
Posts: 9,298
Default I thought I saw one!

__________________

Mhmm, donuts...
moribundman is offline   Reply With Quote
Old 02-25-2006, 02:17 PM   #9
Joe Sixpack
AudiWorld Super User
Account #: 41300
 
Join Date: Aug 2002
Posts: 2,595
Default are you trying to be an Audi engineer. If they put it there it does something, that any help?

__________________
Joe Sixpack -

Average American moron, IQ 60, drinking beer, watching baseball and CNN, and believe everything his President says.
This is so simple, even a Joe Sixpack can understand.
Joe Sixpack is offline   Reply With Quote
Old 02-26-2006, 10:26 AM   #10
Audi Logic
AudiWorld Super User
Account #: 61186
 
Join Date: Aug 2003
Posts: 3,482
Default no I'm not

I just want to know why its different from the manual..
Its the same engine and that seems like a significant difference but it doesn't seem to be a significant system or they would have done it to both..
I just find it strange.
Audi Logic is offline   Reply With Quote
Old 02-26-2006, 10:26 AM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply


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 On

Forum Jump


All times are GMT -8. The time now is 08:00 AM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community

Personal Contacts