just fitted a bailey dv26 double piston dump valve,run the top hose to the right hand side of the inlet using a t piece ,went out in the car, tick over fine ,boosting fine but no sound from the dump valve? when the car turned is off the top piston drops down,when you start the car on tick over it opens, when you rev the car it comes down again ,is this correct? but i carn't get the lower piston to open?is the how it should operate?its only running standard boost around 8 psi.

 

Needs to be on the right had side not the left mate, i did the same..Of the inlet that is.

 

left side is for gauge mate right side dump on inlet as you look at it

 

yeah right hand side mate

 

sorry my mistake ,it is plugged into right side outlet of the manifold ,as i stand at the front of the car looking over the engine.

 

sounds like its working ok,have you drive it up the road as works best under load?

 

have done mate no sound at all,drives fine ,boost fine,ticks over fine.it seams the bottom piston isn't opening when i let off the throttle,ive had a look and its not jammed or anything and all seams fine inside.

 

the vacum pipe you are using isnt colapsing when vacum is increasing mate?

 

Is it brand new? I had a similar thing with my dump valve, after a bit it loosened off slightly and worked fine.

 

I was thinking that but it's new hose which I had left over from a boost gauge fitting kit,and the top piston is opening and closing with the throttle fine. Just the bottom piston stays closed hince no noise.

 

I got it of a guy of the rs owners forum, but it looks brand new all the seals look new and it's spotless inside.

 

is it the clear style vacum pipe because i used that when fitting my gauge soon as it got warm collasped.if it aint that mate it can only be an issue with the dump valve.i got a spare baileys its used but if you wated to come get it you could have it.

 

It is that clear stuff, the dump valve looks new,I've striped it and it looks fine seals every thing are new looking. I would have thought if it was the dump valve causing a air leak the car wouldnt tick over ect?cheers for the offer of the valve mate, I will let you know As I'am not that bothered about a dump valve really and would be sick off it In a few weeks!!!

 

yeah i know what you mean somedays you like em other days they do your head in!,i would definatly try a differen vac pipe though mate,i use the silicon ones

 

ive got some at work but forgot to bring it home so will try that monday heres a pic of it fitted.

 

Why don't you try an other dv? is new so get it back and try an other! my she has a problem even if is new..
And one question, where is better to put the ecu hose? left whith the gauge or right with the others??

 

been out in the car all day, runs fine ,still no noise from the dump valve, unless i rev the tits off the car up to 6000rpm when parked the valve opens a little then it makes a slight noise .may be a boost prob?will have to fit my boost gauge back in the car and see what its running.

 

Guys,

The right and left hand side of the inlet manifold are one and the same.

I doubt you will get any noise out of your dv running 8psi mate. And you will never make enough boost off load (just revving) to make it work.

Your best bet all round is to crank the boost up!

 

As Rob said, it doesn't matter which side they go, but, i would leave the ecu plumbed in on it's own piece of silicon pipe, i.e no T pieces off it for the dump valve or boost guage. This wil reduce the risk of any leaks which could affect the ecu's boost reading (not good).

 

thnx.. i've already have the ecu it's own on the left side

 

Change the vac pipe to silicone pipe m8 and try running a few more psi as rob has said you wont hear much at 8psi

 

That's what I was thinking, running standard boost is not enough to open the valve. The cars not chipped so carnet run no more boost, so will prob just take the dump valve off. I would have got pissed off with any way in a couple off weeks!!!

 

I have the same DV and mine makes a very loud woosh, not even running 8 psi cause my actuator is fooked

 

all sorted,just been down to a lads house my mates knows as he said he had a bit of silicon pipe laying around in his shed,tried that still the same not working,but when i remove the hose noticed the t piece i'am using has some sort off brass reducer in the center,so i took one off my mates vans washer jets and hey presto it works!!!!!!!!!!!
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The T piece was for a gauge and the brass insert is to help prevent the gauge needle bouncing.