Extended Tip Design

By extending the ends of the wheel, Borg Warner has effectively increased the pressure ratio efficiency and flow of the entire compressor. This gives pressure ratios and efficiencies that can normally only be had with larger, slower spooling turbos. The extended fins do not hamper spool-up. The compressor wheel is designed to remove excess weight, reducing overall rotating mass. Of particular importance is the reduction of weight at the outer edges which is a major factor for reducing inertia. The weight reduction and where it is reduced allows these compressor wheels to spool very fast! Another factor increasing the efficiency of this design over another competitor wheel is the overall height increase of 20%. The theory that the longer the air stays on the blade the more boost you can run and the more air it will flow thus improving the aerodynamics of the turbo. In the example pictures the Borg Warner Extended Tip 50 trim is rated at more than 56 lbs/min, while the competitors 50 trim is only rated at 49 lbs/min. Any class that limits the inlet diameter can benefit from this design.