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Recreational Mechanic
Join Date: Sep 2000
Location: Northern Colorado, USA
Posts: 3,326
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Saab made one back in the late 1990's and showed it off in 2000. They were going to put it in the 9-5 but that was right about the time GM bought the remaining 50% of Saab and shelved the engine due to cost.
Saab's version used a tilting cylinder head with the goal of matching CR to forced induction boost. Interestingly (and very non-Saab like) this engine used 5 cylinders instead of 4 and used a supercharger instead of a turbocharger.
https://en.wikipedia.org/wiki/Saab_Variable_Compression_engine
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Last edited by Nickshu; 02-04-2017 at 09:08 PM..
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