Re: Supercharger

Posted by Eric Boyle On 2007/2/16 15:48:35

The supercharger I'm afraid, isn't putting out the power that I think it can. When I drive it down the interstate at speeds above 70, I have 0 psi, with NO vacuum. Now, this tells me that it is moving air, but not enough. I believe that the pulley ratio isn't correct, but I don't know what the original crank pulley diameter was on the Avanti that it came off of. So, since I can't easily change the diameter of the crank pulley, I bought a new pulley for the supercharger that's 1/2 the diameter of the original pulley. When warmer weather hits, I'm going to put it on and see how much difference it makes. I have a feeling that my crankshaft pulley is at least 1" smaller in diameter than the Avanti pulley, but without one to compare to, I'm flying blind here.

It has made a difference in some ways, I have more power than before, but my top speed is still only 90-95 mph. Hopefully, when the 374 is done, 125mph will be attained.

Eric