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WinRice WinRice is offline
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Join Date: Jun 2005
Location: Colorado
Posts: 709
Here's a scan of the 78-81 Tech Specs, the vent holes should sweep back.

The idea is the centrifugal force of the rotor rotation pulls the air into the center where it flows to the outer edge. Some mistakenly think the vanes of the rotors act as air scoops and scoop the air from the edge, but that's not the case.

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1986 911 Turbo
3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts.
Old 07-14-2012, 08:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #39 (permalink)