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Old 10-16-2018, 10:00 AM   #5 (permalink)
Daox's Avatar
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,020

CM400E - '81 Honda CM400E
90 day: 58.68 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
90 day: 56.69 mpg (US)
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I believe in order to run an efficient ethanol engine compared to gas, you really have to bump up the compression ratio into diesel territory. I think I've heard 14-17:1. Adjusting ignition timing and cam timing will only do so much. So, you can probably do this with a turbo or something that actually does alter the compression ratio like Nissan's VC-T technology.
Current project: Adding regenerative braking to the Mirage
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