I personally hate dump valves as they irritate the sh*t out of me.

The question is do I really need one ???????

My car goes better off boost without it and my car is quieter

I have asked a few "EXPERTS" and got different answers every time.

Anyone on here have a SENSIBLE answer to this ?

Ta

 

Simon

With the turbo and boost you are running I would use a recirc one, This will be quite.

Mark

 

i would also like to know, apart from the noise being irritating is it best to just put up with the noise and keep your turbo healty

 

Mark,
thanks for the advice but then our mutual friend NORRY says dont bother with one.
He never uses one on his own car

 

Simon

I would be worried about running such a large turbo without one, But you never know until you have tried, Never looked under his bonnet to see if one was there,
I dont run them on T34 or smaller but run them on larger.

Mark

 

Dunno if it helps Simon but I have a T34 on my Escort and I dont use one.

But Karlos does on his huge turbo so fug knows the answer.

They're very gaylord tho

 

Thanks Mark,

I will take your advice as you have much more experience than me in this area

 

so if you run 34psi with a t-34 you dont use a dv and with a t-4 with 28psi you are using a dv (for example)

thats very strange.

and it doesnt make sence

 

Its about size of comp blades and weight of shaft, The T34 hasnt got a hope of matching a T4 at 28psi, Now thats not strange

Mark

 

Stop a 13" wheel travellin at 30mph then stop a 19" wheel at 30mph Big difference

 

but mark......not having a dv you put a lot off stress on the bearings of the turbo

wim

 

Okay, listen to katie (car retard.....etc)
I think if you can store pictures on it, you should have one.....as you can't ....it's a load of bollocks.....why were you lessening the life of your keyboard by typing that message (Delboy...lol)

 

not having a dv you put a lot off stress on the bearings of the turbo

like bein passenger in rods car yesterday and sticking head outta window at 200mph

 

Seems to me if you asked both me and Mark on here you would have recieved EXACTLY the same answer Simon

 

Stu, You and Mark are much more knowledgable than me on the subject of engines.
I thank you both for your wisdom.

 

will a car go any quicker if you take the DV off? (t34)

 

Only if it was faulty....

Simon, your very welcome.. and i WILL be on teh phone looking for return wisdom and you know it

 

Anyone actually had a turbo break due to not running a DV? (Ie the shaft or wheels sheering?)

 

Vince at Universal Turbo's told me only use one on T4 and bigger due to the amount of air with no where to go.....on my new turbo which is quite unique by the looks i dont need one even at 34psi held.


BUT thats all bollocks if you dont RUN a 360 degree bearing.

 

so you mean......if you dont have 360 bearings you have to use a dv.

so it does put a lot of stress on the bearings afterall.

wim

 

Like i said before, all this 360 bearing, certain size turbos, certain boost, blah blah, anyone got any actual facts or proof of what breaks and when?

I mean, no harm in running one just to be sure (i think im gonna maybe even run 2 even tho i dont like DVs) but do when know when you REALLY need one?

 

SECS, are you thinking about running als at one stage on your car if so,,, then dont use a dump valve! but if you aint thinking about als then go for a dump valve

 

If you only got a 270 degree bearing and run MORE than standard boost run a dump valve......i think all aftermarket turbo's run 360 bearings.

 

GARETH T, I am going to keep the dumpy valvey thingy but I am going
to control it with a 3 way electronic solenoid valve controlled by the ecu
so it only dumps when driven hard above a certain rev value (eg 3000 rpm)
and obviously closed during ALS run time.

I am currently testing ALS for the S8 ecu - All those who have purchased
an S8 can download the software upgrade soon. (Free of Charge)

 

Wouldnt we say a dumpvalve near the compressor outlet is a damn good idea as the whole point is to stop reversed air pressure hitting the compressor wheel?

I was thinking running one near the throttle and one near the compressor outlet if running 2.

 

GARETH T


Its a myth that you dont RUN a dump valve and anti lag.

I talk from experience... T4 has to have a dump valve like i did..and i was running Anti Lag as does Mike R...it makes NO difference that i saw to its operation.....maybe on a T34 or below but they dont need a dump valve....The T4 only can produce 0psi at tickover anyway!

 

SECS, cool idea mate,, but remember the pressure ontop f the dumpvalve helps close and seal it helping the spring