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Thread: Dump valve

  1. #1
    Regular Member Martybhoy's Avatar
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    Cool Dump valve

    Im sticking my neck out here, but this bugs the ****e out of me, whats the obssesion with you lot and chav tastic Correct me if im wrong, but a dump valve is a bonifide engine mod?? It serves a purpose!! If its sooooooooo chavtastic why is it used in thousands of different cars? are all the big jap gurus chavs?? NO!! Are the yank tuners chavs?? NO!! Are the swedes?? NO!! the gerrys....NO the aussies....... you guessed it ... NO . Manufacturers produce cars with this engine part(granted not a whoosh 1) but its still in there. does that make them chavs????

    Im just starting to mod my signum, which will include a dump valve 1 because it serves a purpose and 2 i actually quite like the sound of them. And I AM CERTAINLY NOT A CHAV!!!!! and will have words with anyone who says otherwise.

    I am the first to admit im not mechanically minded. 1 of the main reasons i use forums. to help gain know-how. im sure other people are the same.

    Ive had this rant because you had a pop at me for asking about them. i posted a thread asking for help or advice, not to be slagged. And the other guy with the 2.8T he asked a few questions and you jumped on him for being chav tastic!!

    Get a grip of yourselves, none of you are any better than me or the other guy. if we choose to mod our car in a specific way. Thats our choice. We dont deserved to be be-littled for it. So take note, if you dont like somthing, keep it to yourselves. its called respect, look it up, its under 'R'
    as my mother once said, 'if you cant be nice to people, keep it shut!!!!

    Have a nice day!!!

    Marty

  2. #2
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    Im just going to hide.. as this will become a very ehated thread very quickly!

  3. #3
    Regular Member Sean-2.2Direct's Avatar
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    I dont mind the sound of them mate its just there is no purpose on the Vec turbo as there is a waistgate

  4. #4
    Regular Member parsco's Avatar
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    To be honest I was looking into this myself when I first got the car because I'd heard it on a few cars in the past. But then after talking to a mate of mine who had one on his Octavia VRS he said that it got really annoying after time and got rid of it.

    I can occassionaly hear mine dump with you give it a boot full so it's alright

  5. #5
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP NAV

    Engine : 1.9 CDTi 150

    Year : 2007

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    I think its best to learn the "technical" side of them before you spout off mate - yes, dump valves are there for a reason (to reduce turbo stall), and most (if not all) turbo cars have them (even with wastegates), but do they need to "whoosh" no, do they f*ck - that is for chavs.

    Most cars these days don't like the vent to air DV's and requires the recirculation of this air for the operation and smooth running governed by the ECU - you wouldn't belive the amout of Scoobys that have had engine problems becasue chavs wanted to remove their recirculation DV's for one "that makes a whoosh sound" !!!!

    At the end of the day its up to the individual, but isn't it best to have whats best for your engine on there..?

    Now wastegate chatter is a noise to behold

  6. #6
    Regular Member mat100edt's Avatar
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    Quote Originally Posted by Sean-2.2Direct View Post
    I dont mind the sound of them mate its just there is no purpose on the Vec turbo as there is a waistgate

    i think your find a wastegate and a dump valve do a similar job but are on diferent side of the turbo.

    a wastegate is to direct exhaust gases away from the turbo once it has wound right up and the dumpvalve is to top excess pressure on the charged side pusing back against the turbine blades

    i have one on my 2.0t and i love it.

    what i wil say though MARTYBHOY is get an adjustable one, because if the spring is to hard and it doest dump at the right time it puts your car into limp mode every 5 bl00dy mins!!! very annoying
    Last edited by Big-Pete; 7th July 2009 at 11:17.

  7. #7
    Regular Member Sean-2.2Direct's Avatar
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    Quote Originally Posted by mat100edt View Post
    i think your find a wastegate and a dump valve do a similar job but are on diferent side of the turbo.

    a wastegate is to direct exhaust gases away from the turbo once it has wound right up and the dumpvalve is to top excess pressure on the charged side pusing back against the turbine blades

    Yes I know mate same thing just different ways of doing it I guess

  8. #8
    Regular Member neilybhoy1888's Avatar
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    at the end of the day guys it is up to him wot he puts on his car like he said if he wants a dump valve carry on.

    in my opinion and it is just my opinion and am fully in ma right to voice it
    dump valves sound good on jap cars thats bout it really i can understand y u are sayin its chavtastic and i would kinda agree

    it is his choice tho

  9. #9
    Regular Member mat100edt's Avatar
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    Quote Originally Posted by Sean-2.2Direct View Post
    Yes I know mate same thing just different ways of doing it I guess

    kind of lol

  10. #10
    Regular Member Sean-2.2Direct's Avatar
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    Quote Originally Posted by mat100edt View Post
    kind of lol


    Wastegate directs the flow of exhaust gases away from the turbo there for stopping it overboosting.

    Dumpvalves like you said before are on the other side so when you lift of the throttle the pressure does not try to force its way back through the turbo putting strain on the bearings.

    So its more or less doing the same job but as the vec already has a wastegate putting a Dump Valve on is more or less pointless!

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