W123 300D VNT dyno

1982 300D
OM617.952
722.3 automatic
GT2256V VNT turbo, 17psi boost, A/W intercooler, tuned M-Pump

115hp @ 3500rpm
196lb/ft @ 2600rpm

Full graph and details at:
http://www.superturbodiesel.com/std/dyno-results-t-187.html#pid6860

Note: This is NOT a 4x4 car, its an AWD dyno.

Category:

Autos & Vehicles

Tags:

• 300d
• w123
• superturbo
• vnt
• vgt
• turbo
• diesel
• turbodiesel

[tpvalley]

how do u control the vnt?

normally the vnt part only gives boost when u floor the accelerator, when cruising the nozzle is set for no boost so if u use a wastegate the turbo is an exhaust restriction off load and it overheats.

be better connecting it physically to accelerator via a spring and have a wastegate type diaphragm connected to the vnt also so when boost is reached it over rides accelerator spring and moves vnt to off boost.

[Turbo617]

@tpvalley Your description only controls how fast it spools up to maximum, a very poor performing option.

To control a VNT correctly requires boost to be proportional to engine load.

[zsmh102]

4x4 ?!!

[Turbo617]

@zsmh102 AWD dyno.

[Turbo617]

Can you not read the description?

[sirHOAX]

Make me want to get rid of my 300D non-turbo.

Keep telling myself going to get one when this one dies, but we all know these things last forever. So... ;-)

[Xx69roadrunnerxX]

Awesome! Love Mercedes-Benz diesels. Great cars!

[300DTURBO]

NICE!!!!