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Registered
Join Date: Aug 2006
Location: Cincinnati, Ohio
Posts: 1,019
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A shot of the custom downpipes with individual vent paths for the wastegate dumps and turbine outlets. Keeping these gasses apart avoids the turbulance associated with dumping the wastegate gas in just at the turbine discharge. This type of setup has been shown to have a positive impact on power production. Notice the "angle of introduction" back to the main line, flow paths have been optimized for maximum effort.
Additionally, wastegate and turbine gasses are divided by means of a baffle in the turbocharger discharge cover plates of the downpipes. Locating the turbochargers where they are took a lot of time and patience, but it will pay dividends compared to mounting at the rear of the vehicle. The heat loss from my head ports to the turbine wheels is going to be minimal! Remember, it is this heat energy that is used to drive the turbine and consequently the compressor wheel!
ENTHALPY!
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Kuhn Performance Technologies, LLC
Big Gun: 1988 928S4 Twin Turbo, 5-SPD/LSD 572 RWHP, 579 RW ft-lbs, 12 psig manifold pressure. Stock Internals, 93 octane.
Little Gun: 1981 928 Competition Package Twin Turbo, 375 RWHP, 415 RW ft-lbs, 10psig manifold pressure. Nikasil Block, JE2618 Pistons, 93 octane.
Last edited by Herr-Kuhn; 02-26-2007 at 06:36 PM..
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