View Full Version : Water/Methanol mix and AFR's
steveatyork
30-07-2007, 09:40 PM
What affect if any does adding methanol make to the AFR :?:
Richard L
22-11-2007, 08:49 PM
Depending on the quantity injected, ratio to fuel.
Methanol has a stoichonetric of ~6.6 amnd gasoline ~14.7 you need to injection 2.5 times to replace fuel mass..
steveatyork
22-11-2007, 09:03 PM
So in simple terms :? running say 50% water and Methanol against water alone will bring the AFR's down (running richer)
keithmac
22-11-2007, 11:16 PM
Yes, the alcohol is extra fuel so you will run richer if you don`t trim the fuel injector delivery. I`d say 5000cc/min of 50w50m wouldn`t have much effect on the AFR, I only had tro start relly trimming fuel out when running 1.2l/min of 25w75m mixture.
You`d have to trim 100cc/min of fuel to account for 500cc/min of a 50w50m mix.
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