ORIGINAL: BlueStang6


A blower is one of three basic types of superchargers - Roots type, Screw type, and Centrifugal. It is a Roots type and because it does not have internal compression, its design classifies it as a "blower" and because of that, it will never have the same potential as the Screw type or Centrifugal. Its big advantage is that it produces full boost at low rpms (often by 2000 rpms) which make it ideal for smaller engines and top fuel racers. If you're going street light to street light, you're almost immediately at peak boost and hard to beat. A second big advantage is that a roots blower has very few moving parts and spins at low rpms which make it one of the most cost effective, durable and reliable supercharger designs.

ORIGINAL: 1stV6Stang


Ok, I just joined MF though i've been a lurking around for several months. I pretty much made up my mind to get a roots supercharger like x-charger because I'm prolly never going to the track and I want a F/I that will give my stock engine a safe, long life and at the same time give me enough power to beat a rice rocket and hardtime one of our GT brothers. And for the cost per HP/Torque @ 2000 RPM (down low where I'll need it from stop light to stop light) the xCharger looks like the only way to go - not only that but its soooo damned sexy! My question is - what are the disadvantages to a roots blower? And is it enough to make me reconsider a centrifugal like procharger or vortech? I wouldn't go turbo cause I'm not interested in that much power in the higher RPM range.

Thanks, Rico