My VGT setup.

huntinguy

huntinguy

New member
Joined
Jan 8, 2010
Messages
37
Figured ya'll might want to see this.
I think I have it dialed in pretty good right now. lights almost right away, makes 45psi. Mods are, ground fuel pin. pump almost maxed,(unknown injectors) procomp lift pump, timing to the head and 4" exaust.
With this turbo I hit 1700* at 85mph in 4th gear. before the turbo and the timing I could hit 2100* in 4th gear. A few more mod's are in order but I'm getting closer.

If you didn't know this is a he351vgt. I'm useing drive presure to open the turbo, a spring to close it and boost to balance it out. I have a filter and a needle valve on the drive presure line.
truck352.jpg

truck353.jpg
 
PVC in an engine bay - :rules:

i bet that red intake boot is hating life too
 
It will spool up better if you limit vane closure to 70-80%. Beyond that is the exhaust brake range and it chokes flow more than it spools up the turbo.
 
Looks nice. Did you tune how fast it will open with the needle valve? What kind of cylinder did you have? Did you have an extern spring to close, or is it a spring in the cylinder? The boost and the spring will try to close the veins, and boost have greater area inside the cylinder, can you come to a situation when the drive pressure have hard time to open the vein, or is the drive pressure always greater than the opposite force?
Will be great if you can take it little teoreticaly, cos i have bought a vgt too, but not make a decision how to control it?
//nilsson
 
You must log in or register to reply here.
Back
Top