Evidence

Hello!as i say yesterday i bought a near new baileys dump valve for my sapphire cosworth 4x4.I install dump valve on the same place as stock BOSCH valve.Then i test it and bov sounded like a flutter
Check this video on 5:30 to sound.It sounds same as mine!
So i want to ask what is the problem?Is my bov's spring weak?Why when you buy an aftermarket dump valve for cosworth you must install it before the throttle body?
Maybe has lower pressure and works better than the standard place?


(my dump valve is Baileys DV26 working on 1.5 bar on T3 with standar intercooler)
Please help
Thanks

martysmartie

iTrader: (1)

Not sure, normally atmospheric D/Vs are installed before the T/B, but I guess in theory it may work in the inter cooler (As that is where the standard one is fitted)

If you are getting "Turbo chatter" it would suggest the D/V is not "Dumping".

Have you connected the vacuum hose to your new D/V?

Martin

Evidence

Yes Martin!Its connected!
Now baileys has the same sound like the plastic BOSCH
thanks for you reply


(btw so i need new spring or new dump valve?Baileys has springs?)

E980VTJ

I perfer the chatter noise to a dump valve,thought it was the vacuum pipe that kept the DV closed,that vid makes me want a cossie

E980VTJ

with a weak spring wouldn't it open easier,

Evidence

Anyone suggest to replace before the throttle body?Or will be the same

E980VTJ

in theory it should work anywhere between the turbo and tb as your just releasing built up pressure,if the vacuum is plumbed in right it should work,unless the dump valve is faulty

E980VTJ

what boost you running,can't see it but spring might be to strong

Paul_RS

iTrader: (4)

Most people fit them on the hose from the intercooler to throttle body.

Evidence

im running almost 22psi-1,5 bar on a T3 standard garrett
Can you post a picture with the vacuum on the inlet manifold?
Thanks guys for help

Paul_RS

iTrader: (4)

You just use the vaccuum takeoff that was used for the original dump valve.

Evidence

Hi Paul!I already use the stock but i think is on wrong position!Can i have a photo of the vacuum hose where i must connect it?

Evidence

Can someone post a photo with the position of the inlet manifold wich is connected the vacuum hose?
Come on guys only one clear photo i need!

Paul_RS

iTrader: (4)

Use one of the 3 black fittings. When the inlet manifold is on the car these fittings are beside the header tank.

Evidence

Thanks again Paul!Maybe my spring having problem as i see!Now changed!
It works
Thank you all!

Paul_RS

iTrader: (4)

Glad to hear you got it fixed