> relationship to impeller design. ATI uses a T-56
> billet straight impeller design. Vortech uses a
> lightweight curved cast impeller design. The
> straight billet impeller is less efficient than the
> curved cast impeller. This is the main difference
> between the two that affect efficiency. If you
> compare the ATI to the Vortech both being
> inter/after cooled the Vortech will make
> significantly more power. Same thing if you compare
> the two blower without an inter/after cooler.
One of the reasons that vortech have to use cast
curved impeller is because the impeller is much
smaller than ATI's. Smaller impeller will make less
PSI at a given rmp. Therefore, vortech must use
curved impeller. ATI uses T-56 Billet design.
Although the curved impeller can produce more boost
(increse air flow) but casting????. Casting is an old
technology. Billet is grinded (CNC) from a piece of
material.....ATI impeller is one piece material..vs.
vortech is two pieces..... Second note: vortech is
very popular amoung the cobra owners, but popularity
doesnt mean is better...
=====
DC
Monterey Park, CA
ATI Stage II Procharger
http://www.kiropractic.com
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