seatturbo
10-03-2003, 07:10
for 130 pd engine diesel turbo
there is only one possible upgrade choice and thats the turbo from the 150PD engine.
The 130 and 150
use a variable-geometry Garret VNT15 turbocharger. There is no wastegate, and all of the engine exhaust passes through the turbine all the time. When the engine is running slowly, a set of vanes inside the turbine housing move, to direct the exhaust gases through the turbine at a shallower angle but a higher speed; this causes the turbine to spin faster, so that the turbo compressor can reach the design boost level sooner. As the engine runs faster and the amount of exhaust gases increase, the boost level starts going up; this is detected by the engine controls which act to move the vanes toward a more open angle. This allows less energy to be transmitted to the turbine wheel, so the boost level is reduced. Compared with the previous design, this arrangement allows the design boost level to be developed faster and at lower engine speeds, and allows more efficient operation with reduced exhaust back pressure at higher engine speeds.
Another design change with the new 130 engines is that the turbine housing is built into the exhaust manifold instead of being a separate piece, thus eliminating a potential leakage point.
Quote taken from tdiclub faq