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Old 07-05-2010, 08:32 PM   #9 (permalink)
jdgFirefly
EcoModding Lurker
 
Join Date: Jun 2010
Location: canada
Posts: 48

the dented fly - '96 pontiac firefly
90 day: 52.21 mpg (US)
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If your building a Atkinson type engine don't forget to increase the compression ratio to make up for the reduced intake volume. The question is what ratio do you need to bring compression pressures back to normal?

I've been wondering if anyone on this site has ever build an Atkinson engine?
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