to run a cossie with no dump valve? took mine off today and it sounds miles better without it ,just dont want to cause any problems though. its a stage1 4x4 with a t34 running 15 psi.

 

Really depends who you talk to on here IMO, so will say yes, some will say no, personally I say yes it's ok, took mine off again yesterday, sounds MILES better, but what you have to realise it that it could potentially shorten your turbos life as it is essentially forcing air back through it. I have already destoyed a turbo not long after doing this, and i am convinced it was a factor, although admittedly it wasn't a new turbo. I think the important thing is that you are aware of the "risks" and make the decision for yourself.

 

as much as it sounds better where do you think all the air is going when you shut off the throttle, your just weakening the life of the turbo, if you don't want a dump valve fit a re-circlutaing type then you can best of both world

 

Hmmm

Dan

 

pretty much as said, their there for a reason!! if u just want a bit of chatter or ur not fussed then as said fit a recirc one. Ive never run one as im a sucker for wastegate chatter but as said you can shorten the life of the turbo althou i never had one fail on me from it.

 

As said it will impose extra load on the turbo bearing, and so shorten life, so up to you.
tabetha

 

guess im just best leaving it alone then,did sound good without it but the last thing i want to do is kill the turbo!

 

mines off, and i know alot of lads on here run with them off without trouble, mixed opinions on this one, i am sitting on the fence for this one though!

 

ive Run my t34 for about 3 years with out a dump valve, havent had a single probelm, even went to the ring with out 1,

That said i am thinking bout re-fitting 1, whan you think the sound you love when you back off the throttle is the turbo blades stallin, cant b great

 

at stage 1 that's no problem at all

 

I love a good dump. leave it on mate.

 

It's all relative, the easier time the turbo has the longer it will last, all else being equal, whether that's days months years no one yet knows.
tabetha

 

Never had one and never had any problems.....

 

I would not run a dump valve on a T34 or smaller and it does not matter on the boost either.

Mark

 

wastegate chatter

 

My Cosworth Sapphire 4x4 was laggy as hell between gear changes with a bailey dump valve. Took it off and blocked the hole up and the car was 100% nicer to drive- much, much less delay between changing gear and boost coming on as well as the nice chattering sound.


Mark

 

Mine chatters like I've never heard. I've not ever really been that worried about it until now.

Wish I hadn't sold the Tial BOV now.

 

laggy with a dump valve
must have been something wrong

 

i well wanted to buy that, hmmm!