dump valve - blow off valve im confused as usual

[sloany]

Which is for a better sound and which is better for your engine and how do they both work?

[Ash-Lee]

I'm sure they both mean the same thing.  :shock:

[5teve L]

Both the same, better running a recurculating valve as it keeps the pressure in the system.

[Ash-Lee]

While on the subject of recirculating dump valves, i've blocked the hole in the boost pipe for my old dump valve and i am using the recirculating one thats built onto the housing of my turbo, are these ok? I took it apart and fitted a new diaphram.

[5teve L]

So you running a Rover T25 then, yeah it should be fine, although the diaphrams seem to split over 14 psi as a rule.

[sloany]

Ok now thats cleared and shut me up that they're the same thing and a re-circ is the one to get thanks.....

Now heres my dilemma is there a specific dump valve for the R5 GTT or will they all do the same job, example: will a dump valve from a mitsi evo, scooby, escort rs turbo etc... will they fit on to the R5 GTT or do they require a specific fitment?

What is the reason behind 2 dump valves in 1 engine as Ive read on here so far what the benefit from it?

as i said i will ask lots of questions because I dont know the information myself so who better to ask than the experts on here, it will defo be 3 weeks when i pick up my 1st R5 GTT already been contacted by a seller so all is good, I just want as much info as poss so I can have a basic knowledge of what does what and whats the best for the engine/turbo so i can maintain it properly as it will be an everyday car, I've never owned any kind of turbo before hence lots of questions like how long should i leave it running before i set off/turn off ....

[Ash-Lee]

I imagine most dump valves to be the same really, only thing i think would be different is the fitting kit. One type of car might have larger/smaller boost hoses then another car for example.

There are two types of dump valve, piston or diaphram (is that spelt right?).

I've heard twin dump valve setups are fitted on high boost applications to vent the air better, but i dont know if theres any truth in this.

[Ash-Lee]

So you running a Rover T25 then, yeah it should be fine, although the diaphrams seem to split over 14 psi as a rule.

It's a temporary measure, theres a nice piece of thick alloy at work going spare that i have my eye on.

I'm running just 15psi carb top so hopefully it should hold.