Vehicle & Technical > Defender
another 200tdi question
Xtremeteam:
on the inlet pipe between the intercooler n the inlet manifold i think,need to go n look at a cossie again
Porny:
Dump valves don't work on a Diesel..... :cry: :cry:
A dump valve works by opening when you lift off the accelerator pedal...
This is because when you lift off the accelerator pedal, you shut the throttle blade in the carbs/throttle body.
With the throttle blade shut, a vacuum is created in the inlet manifold... it is this vacuum that makes the dump valve open...
The problem is that a diesel does not have a throttle blade, and hence will never create a vacuum...
Which is why most diesels have a seperate vacuum pump for the brake servo.
This is the brief answer......Send me a pm if you want a better answer
However, if you 'REALLY' want to fit a dump valve you need a soleniod controlled by a mirco switch on the accelerator pedal (or injector pump) and a tapping into the line to the brake servo.
When the soleniod is activated (when you lift off - closed throttle) the vacuum from the brake servo tapping would activate the dump valve.. and give you the wusssh noise your after....
One such kit - http://www.allardturbosport.co.uk/pages/dump_valve_kit.shtml
Ian
landyman Ash:
--- Quote from: "Jimbo" ---'scuse ignorance..............but what is a dump valve - I know it's the thing that Chavs have on RS Turbos etc, that makes the "waaa tish" sound, so I guess it goes on the turbo. Do all turbos have one, or is it a Chav option thing ?
--- End quote ---
So V8 reline...... will this make you a chav?? Your be fitting side skirts and low profiles next :twisted: :twisted: :twisted: :wink:
Xtremeteam:
shhhhh been lookin at 19's for it the other day & was down at a car audio place gettina proice for a mahoosive stereo system
Reaper:
--- Quote ---However, if you 'REALLY' want to fit a dump valve you need a soleniod controlled by a mirco switch on the accelerator pedal (or injector pump) and a tapping into the line to the brake servo.
When the soleniod is activated (when you lift off - closed throttle) the vacuum from the brake servo tapping would activate the dump valve.. and give you the wusssh noise your after....
--- End quote ---
This is the system I got on my 200tdi Disco
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