If you aren't familiar with supercharger installations, don't worry. Vortech supplies comprehensive instructions. But you should know the supercharger will reside roughly where the factory alternator used to be. As such, the supercharger bracketry not only mounts the blower, but relocates the alternator below the smog pump-or in this case, the Auto Specialties smog pump eliminator pulley.
We're getting close. Chad slides the Vortech SQ S-Trim into its waiting bracket, then installs the inlet and discharge tubing, along with the oil feed and drain lines.
All that's left to do is install the 2.95-inch supercharger pulley, route the belt, and adjust the tensioner. Combined with the larger 6.87-inch crank pulley, featuring a built-in underdrive accessory pulley, the 2.95-inch blower pulley typically generates boost in the 15-pound range. This combo did even better with a high-revving cam and cool air temperatures during the Illinois winter, as the air coming out of the blower was only 155 degrees. It boosted up to 17 psi.
As you can see, Chad's '93 is a non-A/C car. Rick reports that he has received several questions about the proper belt arrangement to make the supercharger kit work on this type. He figured it out on Chad's car. The solution was the simple combination of an 81 and 51/48-inch belt, coupled with the addition of a '93 Cobra water pump pulley. The Cobra pulley is smaller than the GT unit, so it speeds up the water pump. Rick says the belt is a tight fit and requires removing the power steering bolts, installing the belt, reinstalling the bolts, and then tightening it all. This should only be an issue when it is first installed, as serpentine belts stretch with use.
There was one other thing that helped the big boost: the addition of AFM's Instaboost elixir ($19). This sticky liquid is said to reduce belt slip and deliver more boost; it's hard to argue with it taking this car from 14.8 to 17.1 psi. Besides, NMRA R/S champion Brian Meyer uses it, and he does well.
With all the mechanical work out of the way, it was necessary to flash the AFM Load IO with a new mass air curve to work with those 50-lb/hr squirters. Rick also had to install the PMS's MAP sensor for boost control and switch up the tuning in the PMS to work with the supercharger.