MrC

New Member

• Mar 23, 2010

• #1

Having not got upclose and personal with my engine yet I can only assume the TD5 runs a re circulating dump valve

Is there any benefit to fitting an atmospheric valve

I am just getting into the ways of tuning diesels and arn't sure how much transfers across from tuning petrol engines yet

ps: its not just for the chavy ppshhhhhhh

 

foss

New Member

• Mar 23, 2010

• #2

disco or fender?

 

G-man

BBQ king

• Mar 23, 2010

• #3

erm a 'dump' valve...... on a diesel is not nessesary as the vehicle doesn't have a throttle butterfly to produce a restriction in the inlet tract, diesels are fuel governed rather than air

 

foss

New Member

• Mar 23, 2010

• #4

and if its a disco the boost modulator is ecu controlled so youll confuse the hell out of the engine management system

 

juiceyv8

New Member

• Mar 23, 2010

• #5

foss said:

and if its a disco the boost modulator is ecu controlled so youll confuse the hell out of the engine management system

Click to expand...

Alot of cars aswell, as petrol it throws into limp home mode

 

MrC

New Member

• Mar 24, 2010

• #6

its a defender.
thanks for the info, I am starting to get my head around diesels
Cheers

 

Shifty1962

Well-Known Member

• Mar 24, 2010

• #7

There is no dump valve on the TD5 whatever motor its in.

 

MrC

New Member

• Mar 25, 2010

• #8

Shifty1962 said:

There is no dump valve on the TD5 whatever motor its in.

Click to expand...

Is this because as G-man said there is no butterfly so there is never a need to reduce presure in a partially sealed section of intake

Iam learning

 

Shifty1962

Well-Known Member

• Mar 25, 2010

• #9

MrC said:

Is this because as G-man said there is no butterfly so there is never a need to reduce presure in a partially sealed section of intake

Iam learning

Click to expand...

Correct. Engine speed and power is controlled by how much fuel is injected. You can turn the turbo boost up all you like but unless you give it more fuel then the gains are minimal and often detrimental. You can run a diesel engine with no inlet manifold and it will run just fine. Not recommended though.