Originally Posted by thdrant
It still has the 2.8" pulley on it for now. Was thinking about going to the smaller 92-93 pulley in the future. I've had it to WOT before and it only has about 5-6 lbs of boost. Some of the rotor coating is gone possibly from the antifreeze it ingested or due to mileage as I also had to put a coupling in it so the supercharger does have some miles on it. If it is pinging will the pcm also limit boost when it retards the timing? What size are the stock injectors? I was planning on going to a larger injector when I do drop the pulley size.
Yes, I did notice the clearance problem with the throttle cable. I clamped a vise grip onto the bracket and bent the corner out enough so the throttle wouldn't bind.
Don't plan on pulleying until J Wikoff and I get all the problems sorted out. This isn't a plug and play as someone before you thought. We should know ALL the answers and have an upgrade guide written by early spring.
The epoxy coating on the rotors is where the efficiency of the Gen 3 94/95 Eaton blower comes from. The loss of coating is killing your efficiency. The whole idea is closer tolerances without the possibility of rotor clash. In order to regain that lost boost, you'd have to spin it faster, which causes more heat and loss of another type of efficiency. If you plan on keeping this setup long-term, I suggest getting a replacment supercharger with better rotors. Recoating is an option through www.canadiansupercharger.com
and I don't recall the cost, but it'* posted on the forum somewhere. (Blitzbird post in Forced Induction?).
You don't need to change your injectors for a smaller pulley. There'* no performance to be gained by that. Not on the Series 1 L67, anyway.
Long-term on that throttle bracket, try to find one from a 94/95 and replace yours.