carlo

iTrader: (4)

I have had 3 cossies & never had dump valves as i like the wastegate chatter best noise ever IMHO..
But im on my 4th cossie now & trying to buy all the right bits to make it a bit more decent running wise & bought a grpA forge dump valve from woodford not for noise just for its purpose!
1. Are forge grpA any good
2.What do you reccomend?
3.The bailey recirc dump valve i could get one of them & buy a new boost pipe for the other side going into the turbo.But how do they sound i hate the little dull noise from the bailey ones will i still hear the wastegate chatter with the recirc?

Oranoco

If you're not running 30psi of boost a T4 or GT series turbo you don't need one is my understanding. From memory there are even arguements that a dv can cause the turbo to overspeed.

carlo

iTrader: (4)

Ahh i will be peaking 30 psi & holding about 28 hopefully

Captain500rs

Ave got a forge one on mine and a cone filter makes a nice wastegate chatter then ya get the swoosh of the dump valve.sounds better than the bailey one i had previous on my rs turbo was.forge was on car wen a bought it so don see point changing it or removing it.think a either love or hate thing

carlo

iTrader: (4)

Cool if it doesnt leak & i hear a chatter before it dumps i will keep it on

Jay,

iTrader: (4)

ask sticky paul he thought thats chavtastic then took it off the oh dear snap snapy shaft

thebigyin

they sound gay and chavvy imo, if you can possibly do without you should.

Oranoco

I have never seen or even heard of a turbo snapping its shaft as a result of not having a DV. I would be thinking there was an underlying problem

R4N SS

iTrader: (6)

i had a le mans one on mine and it was fucking loud a loud at 30psi - you also got to hear the chatter first then the whoosh - i used to play games on the motorway by letting it build up boost and then slowly letting my foot off the gas to see how long I could hear the air seeping out of the dumpvalve - well its certainly makes a long boring journey a bit more interesting - or you could build up boost and let off right next to someone to see their reaction when they shit themselves

pa_sjo

T series turbos are a lot stronger than GT on the whole.. anything below a T4 will generall survive without a dump valve.. I wouldn't run any GT without a recirc valve..

cosworth3d

Turbosmart !!

Nash

iTrader: (3)

I have one one mine, cant be arsed risking it. That and mine doesnt dump unless you left off at full boost, chatters the rest of the time.

carlo

iTrader: (4)

Thats what i would like nash what type is it ?

Nash

iTrader: (3)

One of your hated Bailey ones, it is different to every other bailey i have heard so it must have a really strong spring [or whatever they have] installed. That was running 2bar+ on a T4.

carlo

iTrader: (4)

Ahh im running t34

GARETH T

i dont really like the noise of them, but there really isnt any downsides to a recirculating model!

KSA-Cossie

iTrader: (4)

Ive got a forge group a one carlo and a big fook off cone,get chatter and tiiiiish .

Dicko&Vacant

iTrader: (3)

ours didnt have a DV when was on t34 and chattered like foook but on th t4 we fitted one, it still chattered loads though but not a dead loud tschhh from dump valve. Ours was a Spec -R one iirc

Sarah

dave cos4x4

iTrader: (5)

not sure what i had on mine,but i was told to get one on with the boost i was using.

steveturbocal

dv26-standard twin piston
dv26hd-heavy duty spring twin piston
dv24-single piston

Rab

Every dump valve I've ever owned thats not been a factory fit item has leaked like fuck. If it's OE then keep it. If it's aftermarket them ditch it. Unless you're running 2 bar on a T4 or something....

Paul_RS

iTrader: (4)

My OE cossie one shit the bed and leaked non stop lol. It was swiftly removed! By saying that if i build a mad engine i think i'll put a recuiculating one in.

ANDYRACER

Im running a Baileys DV26 tiwn piston jobbie on my celica and its bloody loud when ruinning 1 bar!

And as for the comment of dump valves being chavvy, i dont understand why they are?

Bloomers

iTrader: (1)

I took off my leaking dv a couple days after buying the car, snapped the turbine wheel right off on the drive back from work.

not particulary impressed.

are we off the opinion that less than 30psi and its safe to let it chatter?

Rab

Beacuse people fit those fake ones to their Saxos and what not... It sounds like a bus anyways.

steveturbocal

i had a dv26 on my calibra turbo was spot on,i no many people who have used them and not had problems. i no scobby boys dont recomend bailey's ones. aprantly theve det a few scoobys

mechanic28

iTrader: (5)

G.G.R group A on mine

Andy_R

iTrader: (3)

Me too, they make top DV's

Gary F

iTrader: (1)

Im on a T4 with no dump valve, take it thats bad?

Rab

Yes, you're going straight to HELL.........

No dump valves are the DEVIL

booner999

http://uk.youtube.com/watch?v=nhKyfwFIeHw

this is mine, baily twin piston fitted to a big turbo conversion (on small turbo engine) peaking at 1.2 and holding 1 bar.

I can lube the dump valve up and loose the chatter, but I love the chatter

steveturbocal

i love that noise i dont think i'd ever get tired of it

kosman

ive got a dump vavle on my cossy,not sure witch 1 it is but it dumps all the time,even at fuck all revs,never give me ne hassle so never considered taking it off,dumps quick or slow with the way you let pedal up,but its loud all the time

CossieRich

iTrader: (1)

i loathe the noise of dump valves but since bolting on my gt30 i have to use one. Much to my surprise the bailey piston one i bought, isnt anywhere as offensive as i thought it would be. Which is good.

booner999

it is nuts mate, nothing comes close to that sound

baba

i had a group a forge on mine peaking at 32 psi according to ava.
and a large air filter you could certanily hear the chatter before it dumped but no-where near the chatter of niges focus!!

booner999

surely tho, its not doing its job if you are hearing chatter first

big_wig_074

i used to run 34 psi no probs without one

Captain500rs

Hows this fella? it chatters from the filter first then dumps from the valve chatter is the wastegate opening if am not mistaking? which needs to happen for boost pressure to be released to the dump valve or am a wrong in saying that?

cheeky dog

Just read the first question!

has anyone corrected the "wastegate chatter" comment?