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To really understand AFR's and how they are figured for a particular setup....you must have some general understanding of flame-front propagation....but heres the cliff notes... Gasoline burns most efficiently at
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07-09-2009, 07:47 PM
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To really understand AFR's and how they are figured for a particular setup....you must have some general understanding of flame-front propagation....but heres the cliff notes...
Gasoline burns most efficiently at a 14.7:1 ratio...but this is not safe nor efficient when building power...for NA cars 12.5-13.5 is the accepted AFR....turbo cars will benefit from a richer mixture due to cylinder pressure and latent heat...11.5:1 is a good start...but each setup is different...and with Race gas these mixtures like to be a bit leaner....due to its slower burning/higher octane rating....there is a huge spectrum of variables that dictate the proper settings for fuel on each car...so this is just a general rule of thumb! -Jack
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