Diesil Dumpvalves?

patrick mac

Guest
have a seat ibiza 1.9 fr tdi.. just wondering if anyone has or know of a dump valve being fitted? seen on you tube a golf tdi with one... and also where i could purchase a good one?:)
 

Torquemonster

Active Member
Nov 20, 2007
301
0
have a seat ibiza 1.9 fr tdi.. just wondering if anyone has or know of a dump valve being fitted? seen on you tube a golf tdi with one... and also where i could purchase a good one?:)

:)I've only ever heard a dump valve on a diesel once before.It was on a Range Rover,and sounded crap.
From what i've read on this forum,dump valves are frowned upon by dieselheads.:whistle:
 

T. Spark

Guest
Nevermind the kittens, I just died a little more inside at the thought of another diesel with a dumb valve on it!
 

basssound

Active Member
May 31, 2007
286
0
Rotherham, South Yorkshire!
To be technical about this, diesels don't have such a big problem with back pressure when lifting off the throttle.

Petrol engines have a butterfly that controls the amount of air going into the engine, this is moved via either a cable (older cars) or a motor (modern cars), when you lift off the throttle, the turbo is still compressing the air but because the throttle body is shut the air can't escape and applies back pressure to the turbo, a dump valve does as it's named, dumps the compressed air to either atmosphere or recirculates it the when the throttle is lifted.

Deisels sound ****ing gash with a dump valve lol!
 
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