a different kind of VNT control

[moTthediesel]

Thanks guy, for clearing that up.
I understood everything about how the boost can worked but couldn't figure out how the throttle cable hooked to it.
 sooo the roller rides on a cam that is moved by the accelerator cable,..
 any pics of that piece?

Hard to get a good picture, but here's a couple.

Fuel pull rod:


VNT cam:


moT

[barrygti]

Sorry to hijack but a little question on the throttle actuation of VNT.

If the vanes are only fully open when throttle is fully pressed, what happens at say half throttle on a hill?

I am planning on running the VNT off throttle and boost control via external wastegate. But I want to ensure that on the 400m climb I drive to work every day I don't have to have full throttle depressed to create boost?

Or does the partial opening of the vanes direct enough gases to spin the turbo for partial boost?

[barrygti]

Without the vanes closed it will act like a typical wastegated turbocharger.

Yes so it will still turn the exhaust wheel enough to generate boost but won't be as responsive as when vanes are fully open?

[barrygti]

That should be good enough, I will be running a 1.6 bottom end with 1.9 head, NA exhaust manifold made to work with my Land Rover BV50 hopefully blowing through my NA intake but with alloy top instead of plastic.  

Want power when foot down but economy when not

[moTthediesel]

On another note, MoT, what's up with the red dust on and in everything?  I'm hoping it's not inside the valve cover area from the open hole where the oil separator should be...

That's overspray -- I painted the car in the same hellhole of a shop that I do everything else in. Had a tarp over the engine, but it still got up in there. Doubt it will do much harm.

moT