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Date: Fri, 13 Jul 2001 04:08:26 +0100
From: Johannes H Andersen <johsnopsamsafish.com>
Subject: Re: Four Cyl. Engine Design Questions


SlideRule wrote: > > What are the design differences between the 2.0 and the 2.3 4 cyl > Saab engines sold in the US? > > Are they the same engine block, just bored out? > Same bore 90 mm. Different strokes 78 & 90 mm. > If they are different engines, then why does Saab market two > engines with the same horsepower? > Not the same horse power. Some say that the 2.0 is smoother, but the 2.3 is stronger. In some markets there is a 2.0 tax barrier. > Is the 2.3 engine a significantly better design than the 2.0 > engine? > No, they are basically same engine. Since 1994 both have balancer shafts. > How does Saab design and build these engines to support > turbochargers? Are they the same design as they would be without > the Turbos, or did Saab redesign valves, pistons, cranks, and so > forth? > Perhaps, but all Saab engines are now turbo charged. Power means heat. Heat management is a major engineering problem in turbos. Johannes

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