8v Turbo Vac/pressure Pipes

[tyerz 1]

really struggling with a few bits and the more i read the more confused im getting, im not experienced with turbos and trying to work with what im reading on the net and failing.

 

so was wondering if anyone could have a look in there engine bay and check a few bits for me,

all my engine is plumbed in bar the vacuum/pressure pipes and what i need to know is where a few of these run to and from.

 

i need to run a pipe to the actuator and dont know where this is ran from, also the dump valve pipe, and also the pipe for the ecu, if someone could give clear instructions or even better draw me a picture it would be most appreciated as im totally lost, i currently have non of these pipes in and dont have a clue on what goes where so if this could be made as clear as possible it would be very mucch appreciated

 

many thanks chris

[peter 20]

If you look at any turbo setup or even a generic diagram of how a turbo charger wastegate and dump valve work you will be able to work it out.

 

The dump valve needs a VACUUM when you shut the throttle so needs to go after the throttle body

 

The ecu needs to see manifold pressure so the tube would go to the...

[Tom Fenton 1,562]

In simple terms all of the pipes need to go to the inlet manifold, between throttle body and engine.

 

The wastegate actuator has pressure supplied to it so that it opens at a certain point to modulate the boost. You should also probably have a boost control valve, this goes in between the signal from the manifold, and the wastegate actuator. There is a third pipe off the boost valve which goes back into the air cleaner pipework somewhere between the air filter and the turbo, this recycles the air that the boost valve is bleeding off from the signal to the wastegate to allow the valve to control the boost level. This can go to atmosphere if needed.

 

The dump valve requires pressure on boost to keep the valve shut, and a vacuum on throttle shut which pulls the piston or diaphram off its seat to release boost pressure.

 

Obviously it will depend what hose offtakes you have on your engine.

[tyerz 1]

makes perfect sense, thanks tom very much appreciated