Simple Answer: Volumetric Efficiency - Saab 9-5 Bulletin Board - Saabnet.com
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Simple Answer: Volumetric Efficiency
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Posted by Winder (more from Winder) on Fri, 29 Jul 2005 15:58:32 Share Post by Email
In Reply to: For argument sake: Why Turbo?, Nathan [Profile/Gallery] , Thu, 28 Jul 2005 04:49:44
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You've made mistakes in your assumptions.
1. Turbo saves gas at a greater rate than comparable powered NA engine.
2. NA are more reliable. Engineering makes reliability not forced induction.

Like I said, Volumetric Efficiency; the more you understand the more wisdom you'll see in the turbo philosophy.

A saab engine in stock Aero form generates 108.7 hp/liter, and 112 lb/ft torque/liter, at usuable RPM's
A Dodge Hemi by comparison generates 58.8 hp/liter, and 58.7 lb/ft torque/liter, at higher rpms.
At altitude the dodge just gets worse, the saab remains unchanged till 10,000 ft.

A turbo philosophy makes real world sense. Gobs of power where you need it, and horsepower with less internal stress than the engines with 7000rpm plus redlines.-who drives at those RPMS anyway.

If you get on a race track, a turbo is not always beneficial.

posted by 67.41.13...

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