The supercharger needed a full rebuild, they had to replace the whole nose cone and the main rotors. While I had the supercharger off I noticed that I did not have the IAC check valve, it’s the one way valve that goes between the throttle body and supercharger.
While researching this valve I found a link to the first gen supercharger installation instructions. After reading through it I believe the supercharger was installed when the vehicle was purchased new. I have the TRD timing belt cover that was pre-cut, along with the extra fuel pressure regulator. Both of these were phased out in time, and the valve was added later on.
http://www.pballandmore.com/Download/1st_Gen_TRD_Supercharger_Install_Guide.pdf
While the supercharger was off I took care of some other stuff. The mileage was a little under 117,000
Timing belt – Toyota
Water Pump – Toyota
Plug Wires – Toyota
Spark Plugs – URD
PCV Valve – Toyota
Block Heater – Toyota
Intake Manifold Gasket – Toyota
Belts (All of them including the SC) – Toyota
New Toyota Coolant
TRD Throttle body gasket – The supercharger needs a special gasket, even if Toyota tells you otherwise. I ordered mine from trdparts4u.com.
Fuel Filter
Air Filter
Oil and Filter (Synthetic)
Misc. Vac Hoses
While everything was apart I installed an Airaid intake tube and did the deckplate modification to the stock air box. I also started the process of installing the URD 7th injector kit.