Author Topic: dump valve - blow off valve im confused as usual  (Read 2016 times)

sloany

  • 150BHP Member
  • **
  • Posts: 28
    • View Profile
dump valve - blow off valve im confused as usual
« on: 23:09, Fri 11 July 2008 »
Which is for a better sound and which is better for your engine and how do they both work?
I ACT THICK COS I AM THICK........

Ash-Lee

  • Global Moderator
  • 200BHP Senior Member
  • *****
  • Posts: 4208
    • View Profile
(No subject)
« Reply #1 on: 05:14, Sat 12 July 2008 »
I'm sure they both mean the same thing.  :shock:

5teve L

  • Global Moderator
  • 200BHP Senior Member
  • *****
  • Posts: 3540
    • View Profile
(No subject)
« Reply #2 on: 11:32, Sat 12 July 2008 »
Both the same, better running a recurculating valve as it keeps the pressure in the system.

Ash-Lee

  • Global Moderator
  • 200BHP Senior Member
  • *****
  • Posts: 4208
    • View Profile
(No subject)
« Reply #3 on: 15:32, Sat 12 July 2008 »
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

  • Global Moderator
  • 200BHP Senior Member
  • *****
  • Posts: 3540
    • View Profile
(No subject)
« Reply #4 on: 17:51, Sat 12 July 2008 »
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

  • 150BHP Member
  • **
  • Posts: 28
    • View Profile
(No subject)
« Reply #5 on: 19:42, Sat 12 July 2008 »
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 ....
I ACT THICK COS I AM THICK........

Ash-Lee

  • Global Moderator
  • 200BHP Senior Member
  • *****
  • Posts: 4208
    • View Profile
(No subject)
« Reply #6 on: 19:59, Sat 12 July 2008 »
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

  • Global Moderator
  • 200BHP Senior Member
  • *****
  • Posts: 4208
    • View Profile
(No subject)
« Reply #7 on: 20:00, Sat 12 July 2008 »
Quote from: "GTTBoy"
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.