User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 4 123 ... LastLast
Results 1 to 10 of 39

Thread: Dump valve on my 2.0 turbo

  1. #1
    Regular Member
    Join Date
    Jan 2009
    Location
    oxford
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default Dump valve on my 2.0 turbo

    would i get any benefits from putting a dump valve on my 2.0 turbo i have heard it can prolong the life of the turbo and heard other stories.

  2. #2
    Regular Member 67688c's Avatar
    Join Date
    Apr 2008
    Location
    In UK
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Excuse my ignorance, but what exactly is a dump valve?

    Is this the gadget that youngsters often fit to their go-faster noise making cars, which makes a sort of loud whoosh noise everytime they change gear when accellerating... LOL ?

    Just wondered!

  3. #3
    Regular Member PORKBALLS29's Avatar
    Join Date
    Dec 2008
    Location
    Epping
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    You allready have a recirculating dump valve fitted to the 2.0t so if you have the windows down you can hear a very faint woosh and spit when the turbo dumps the pressure. I have seen quite a few threads on here about problems with fitting after market dump valves so I would still well clear. It doesn't appear that you'll get any fruther benefits. HTH

  4. #4
    On a Sabbatical
    Join Date
    Dec 2007
    Location
    south wales
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    i had a dump valve on my vectra and it sounded good forge motorsport do the kit and its not to loud on the vectra,as long as you have a twin piston dump valve you will be fine,i changed the forge one for a bailys twin piston off an rs turbo never had a problem,

  5. #5
    Regular Member sdemps's Avatar
    Join Date
    Nov 2007
    Location
    Ayrshire
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Technically external dump valves are bad for turbo's, they can make the turbo stall as it dumps the boost pressure out rather than back into the engine therefor making the turbo work harder. If you like the noise then go for it, it's a personal thing at the end of the day some folks like them others don't (usually the folks that don't have turbocharged cars).

  6. #6
    Regular Member Steven's Avatar
    Join Date
    Jan 2006
    Location
    Dalriada
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    No benefit's at all mate....

  7. #7
    Regular Member John C S's Avatar
    Join Date
    May 2007
    Location
    Gangsta crossover on the drive? Check
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    A bit chavvy is a dump valve.


    More your Fiesta RS turbo than a Vectra!



    Let us Hypnotise you............



    DON'T DO IT - FITTING A DUMP VALVE WILL MAKE YOU A CHAV.



    Your back in the room!

  8. #8
    Forum Moderator soulman's Avatar
    Join Date
    Sep 2006
    Location
    VOTING UKIP IN AVELEY
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    18 Post(s)
    Tagged
    1 Thread(s)
    Vehicle InfoStats

    Vehicle : Vauxhall

    Trim : Astra Twin Top

    Engine : 1.9cdti

    Year : 07

    Default

    Oh my gawd and laffing soooooooooooo much I'M

    nice comments JC

  9. #9
    Regular Member AntB's Avatar
    Join Date
    Sep 2007
    Location
    Manchester
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats


    Trim : GSi

    Engine : 3.2 V6


    Mileage : 39k

    Default

    Quote Originally Posted by John C S View Post
    A bit chavvy is a dump valve.


    More your Fiesta RS turbo than a Vectra!



    Let us Hypnotise you............



    DON'T DO IT - FITTING A DUMP VALVE WILL MAKE YOU A CHAV.



    Your back in the room!
    Sounds like a job for Hypno-toad!


  10. #10
    Regular Member csd_19's Avatar
    Join Date
    Oct 2006
    Location
    Aberdeen
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Vectra

    Trim : Elite

    Engine : 2.8T

    Year : 2009

    Smile

    Quote Originally Posted by sdemps View Post
    Technically external dump valves are bad for turbo's, they can make the turbo stall
    Not quite right...

    Turbo stall is what happens if you remove the DV altogether or remove the vac hose running to it, and the built up boost pressure in the pipework has nowhere to go when you close the throttle. The air reverses direction and tries to flow against the turbo, hence "stalling" the compressor blades. The stalling gives a noise similar to an external wastegate, that "cha-cha-cha" that WRC cars make; excpet this puts a huge strain on the turbo shaft and will shorten the turbo life.

    BOVs (blow-off-valves, let's give them their proper name) can be fitted, but as vectrac20tsri has already said make sure its a twin piston one.

    In a turbo system which uses a MAF for fuelling, the standard setup uses a recirculating DV to dump boost back into the intake side of the turbo when you lift off the throttle. The ECU will be setup to take this recirculating air into account when the throttle closes.

    With the normal recirculating DV (dump valve) it will be held open at idle due to inlet vacuum. Again the ECU knows that some air will be doing a loop through the recirc DV in the intake system, and the fuelling will be adjusted to allow for this and give a smooth idle.
    With a single piston BOV, this ends up fully open at idle, and the air that would normally be recirculated is lost - this can causes idling issues and stalling. The twin piston design counteracts this and allows a smooth idle as it closes fully.

    One way to get around the stalling issue is to unplug the MAF - now I don't know if the Veccys still run with it unplugged? I know it works on VAG 1.8T engines, only downside is it makes the engine runs slightly richer than normal as it then uses the MAP sensor and the AIT sensor to sort out the fuelling instead of the more accurate MAF.

Page 1 of 4 123 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Dump valve
    By lee brown in forum Petrol Engine related
    Replies: 3
    Last Post: 5th March 2012, 00:39
  2. who as a dump valve fitted to there veccie turbo z20net
    By tomo41 in forum Vectra C / Signum Car Chat
    Replies: 11
    Last Post: 29th June 2011, 21:35
  3. Replies: 23
    Last Post: 6th March 2009, 09:00
  4. where do you get the dump valve for the 2.0 turbo??
    By bobtheboss78 in forum Petrol Engine related
    Replies: 40
    Last Post: 15th December 2007, 09:45
  5. SRI 2.0 Turbo Dump Valve????
    By bobbin in forum Vectra C / Signum Car Chat
    Replies: 19
    Last Post: 20th September 2005, 17:55

Visitors found this page by searching for:

Nobody landed on this page from a search engine, yet!

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
  •