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Viggen Turbo |
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| This was found at a salvage
yard off of a 1999 wrecked Viggen. Cost was $400 and included all the oil
and water lines, the inlet pipe, the boost control solenoid and it’s
hoses. Overall a pretty good deal. The plan is to create a larger intake
pipe, port out and obvious restrictions and install the turbo. The expected gains are somewhere between 30-40 hp. A few fuel system upgrades are also going to be implemented and will hopefully solidify those numbers. 
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Full Name: TD04HL-15T-5cm2 Turbine Intake Flange: Same as T25, it will bolt up directly to the stock exhaust manifold. What Does 5cm2 Mean: This is the smallest area of the turbine housing. Turbine Exit Flange: Same as T25, so the downpipe will bolt right up with no modifications. Part Number From Saab: 9172180 |
| The only difference between
this turbo and the 9000 Aero version is the exhaust housing. The Viggen
housing is the same as the T25. It is a circular hole and is also visible
on the exhaust manifold. The Aero Turbo has an oval turbo housing and can
be seen by the impression left by the gasket on the Viggen turbo housing.
Apparently Saab decided that one gasket shape would be fine for all models
so they just made one large holed gasket.
Here is a shot of all the hoses and lines that came with the Viggen Turbo. Outside Going In: Inlet Hose Boost Solenoid and Pressure Hoses Crankcase Breather Line Water Line Oil Line Water Line Oil Drain Hose Wastegate |
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The inlet to the compressor
wheel seems very restricted and there is a tight 90 degree bend just
before it. I ported it out and found a larger pipe at a junkyard. The
ported inlet is pictured below. The expected result from this will be
quicker spool-up.  |
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A comparison of the stock Viggen pipe and the new one. But
I am no longer using the black inlet pipe. Instead I am using a 2.5" metal
pipe with silicone connections.  |
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| Stock 3.0 bar and crushed fuel pressure regulator.
Crushed 0.1192 inches. The new pressure is now 3.7 bar. |
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