GT1749V
Turbo Mini Forums

I have two in bits now.

The V at the end is because it is a VNT (variable nozzle turbine).

It appears they are very common fitment on modern turbo diesels from about 1.6 - 2.0 litres. Mine is a Mondeo TDCi 130hp but they are also common on lower and higher power engines.

But they are all very different part numbers, although the core seems to be the same.

The VNT bit (inlet guide vanes) are a sub-assembly mounted in the exhaust manifold of whatever car the GT1479V is fitted to, they all appear to be mounted in a custom manifold rather than any of them being an "independant" turbo.

I've searched for maps but can find nothing.

The VNT bit can easily be removed from the manifold (well at least on the Mondeo version) so I can see a possibility of machining out a normal exhuast housing to take the VNT bit (discard the wastegate) and turn it into a stand alone VNT turbo.

Thougths/comments ???



(EDIT- typo)

Edited by Rod S on 14th Sep, 2011.

Schrödinger's cat - so which one am I ???

sounds good,

boost control can be a pita with the VNT's, but for a man of your talents I'd suggest using the PMW boost control on MS to control a servo.

Schrödinger's cat - so which one am I ???

the early vacuum actuator was controlled by a solenoid and vacuum accumulator. i guess they moved to the electronic controll to speed up response times, as the electronic units are more unreliable (have repaired a few now)

controll can be achieved fairly simply, you need to find a way to open the vains at part throttle(helps cruise economy and EGT/back pressure, then close them as you approach full throttle , then regulate the boost using the vains like an actuator, ought to be pretty simple to implement with a small microcontroller and an input from the throttle

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

as Dennis says you need a part throttle vane opening stratagie,
I used an actuator with two ports on may last turbo, but on the current one it only has a pressure connection, its a complete pain to drive.... Ive currently got the situation were on a slight incline it comes on boost and takes off due to the engine loading up.

I was thinking it must be possibel to use an RC servo to actuate the vanes.