what is the best AFR for 12.5 cr engine ?
02-07-2013, 04:17 PM
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what is the best AFR for 12.5 cr engine ? I want to know what is the best AFR for 12.5 cr engine with 93 fuel ?
also how much timing those engine could run with TR7 plugs ?
Thanks in advance
also how much timing those engine could run with TR7 plugs ?
Thanks in advance
02-07-2013, 05:10 PM
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There are too many variables to throw out numbers on that (i.e. dynamic compression and others)... the only way to find out is to put it on a dyno and see what it wants...
02-08-2013, 09:10 AM
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I wouldn't feel comfortable running 12.5ci on 93. You spent the money on the engine, what is a few bucks extra a gallon to run 100oct or e85....
But air fuel ratio as you are asking, and not about spark values, I would say 11.2-11.4 is where it will be the happiest if you have an e10 gas pump.
But air fuel ratio as you are asking, and not about spark values, I would say 11.2-11.4 is where it will be the happiest if you have an e10 gas pump.