Quote:
Originally Posted by BLSTIC
It's only 12:1 I thought? That's conceivably gasoline range
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At first the OP mentioned that compression ratio, but later mentioned that could go higher than that. But anyway, considering that such ratio is more frequently seen either in smaller-displacement engines which combustion chamber volume is inherently less sensitive to pre-ignition or in modern direct-injection engines, water injection is still not a bad idea at all.