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#1
6th September 2009, 02:11 PM
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Does anyone know what this is called?
Does anyone know what this is called (Its no 1 in the pic the small piece of plastic which its approx 2cm in length), its what connects the two actuator valves on facelift models together. Mines broken so this is taken from a 4.2 S6 but its exactly the same. Couldn't find a part number on it, is this listed on Ekta? If so at what price? Thanks in advance.
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds 
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#2
6th September 2009, 02:27 PM
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Can't remember what it's called, but there was a thread on it on AudiWorld a while back.
It's a bellows actuator arm or something like that, by the sounds of it a reasonably common issue.
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2010 Jag XF 3.0D Portfolio S I know.. I know.. 
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#3
6th September 2009, 02:32 PM
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Mate, as I said before, it's the variable inlet manifold change-over valve actuator. A8 parts had them but a repair kit from Audi was, I'm sure, about £160!!
It is very common and that's what I put in Audi Driver. It will be dramatically reducing power at lower revs and responce from pull away. Dead easy to swap tho, just one pipe to it and one securing nut (next to vac pipe feed in). You can't buy just the connecting bar from Audi unfortunately.
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#4
6th September 2009, 02:46 PM
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Cheers Ben, I couldn't find the invoice where you wrote it on and didn't want to keep bugging you with texts on your day off!
 I couldn't get the acctuator valve off, its a 13mm nut but my ratchet wouldn't fit  However I managed to get the arm off, so was hoping I could just replace that. It's dramatically reduced power alright, I sometimes have to check if kickdown is working thats how sluggish its feeling. Will get a new one first thing tomorrow and fit it. Thanks. 
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds
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#5
6th September 2009, 05:15 PM
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Quote:
Got the last one I had from A8 parts - good service
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#6
6th September 2009, 08:44 PM
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Yup, they're a very common failure point, and causes a weird flatspot in the torque curve as you pull through the revs...
Many, many people have 1 or both broken and dont even know it There was a long running thread on Audiworld somewhere as someone was trying to manufacture aftermarket replacement arms for the problem - Thats how common it is
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For parts enquiries and Forum User Administration please contact customer services directly, not me  - enquiry@a8parts.co.uk, www.a8parts.co.uk, or call 01642 783537The Daily Town Car - 2023 Tesla Model Y Performance. Black with Black. Giant ipad screen, huge sunroof, 4 wheel drive, Tow bar, lots of ooomph and made in China, so actually built properly unlike the Californian ones. The Family Wagon - 2018 Tesla Model X. Black, 7 Seats, Towbar, Homelink, Enhanced Auto pilot with Summon and self park, Heated front seats, CCS Charger upgrade, MCU2 Upgrade, Falconwing Doors, Self opening / closing doors, Netflix, Spotify, toys, Air suspension, alcantara roof + lots of other stuff...... The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous..... The First 20 Audis: 2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey, 2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue, 2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue, 2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey, 2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6, The Second 20 Audis: 2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue, 2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black  , 2007 TT Roadster, 2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black, 2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi) 2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black Most Recent Audis: 2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8 Everything Else 1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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#7
6th September 2009, 09:17 PM
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Quote:
Niall Last edited by builder22; 7th September 2009 at 09:09 AM. Reason: Fixed for terrible spelling :)
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#8
6th September 2009, 09:43 PM
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#9
6th September 2009, 11:01 PM
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R8 Dream was telling me that it opens up a flap which releases more torque or something? What if it was always jammed open? Not that I'm going to do it, will be on to A8 parts tomorrow for a new one, also got another subtle cosmetic mod to do on the S8 on Tues, watch this space!
P.S BEN, just took the S6 for a blast and OMG that thing moves after you worked on it.. Magic fingers indeed lol.
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds
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#10
7th September 2009, 05:45 AM
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A naturally aspirated engine has different requirements throughout the rev range to achieve it's best. At low RPM the manifold flaps make the entering air travel around the whole snail-shape within. This a long, smooth tract into the engine. This causes the air speed to increase and which improves the air speed and swirl within the cylinder. This is increasing the efficiency of the burn and so improving torque. However, as the engine speed risesthe need for air changes as the engine's speed ensures a good swirl and fast input of air, at this point, a long, winding inlet tract restricts the amount of air allowed into the engine. Thats when the flaps open in turn, one at around 3000rpm that about halves the length of the inet tract, then the second at about 4800 rpm, this give the shortest possible path into the cylinders and so allows a greather amount of air in for high top end power. The actuators are just opening and closing 2 big flaps inside as required. For best results you want the system working correctly. Here's a few internal pics...... No there's not cos it wont let me upload em...?
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