Quote:
Originally posted by ivymike1031
to illustrate the point, I'll give an example -
there's a gasoline engine, under development by a major US OEM, which has a static compression ratio of 12.3:1 and runs on 87 octane fuel.
Prior to seeing the design (and knowing people involved in the testing of it), I would have laughed if someone had suggested that was possible.
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All I have to say is
Who is making this. Where did you find out about this?? As far as answering the ? itself in a general aspect you should be ok on 93 as long as everything is tuned and set properly but for racing I wouldn't recommend anything less then 98