Methanol mix A/F ratio code CRACKED!
05-15-2013, 10:08 AM
#61
What is even more interesting is with my old turbo car Dave(you're very familiar with) I tried MANY different AFR strategies, timing strategies, different methanol to water %, using 100% M1, using 80% M1 and 20% water etc. etc. etc.
What I found at the end of the day was that my car went the fastest mph it's ever been at the boost level I was running it at with a mixture of 85% M1 methanol and 15% water(using proper mathematical conversions) a timing advance of 14* at peak torque and 16* up top and an AFR of 11.8-12.0. This was with 50% C16 and 50% pump 93 in the gas tank as well.
I tried it richer and it slowed down, a lot. I tried 100% M1 and it did well. I also tried 50%/50% M1 to H20, but the highest MPH came when using a little bit of water in there with it.
What I found at the end of the day was that my car went the fastest mph it's ever been at the boost level I was running it at with a mixture of 85% M1 methanol and 15% water(using proper mathematical conversions) a timing advance of 14* at peak torque and 16* up top and an AFR of 11.8-12.0. This was with 50% C16 and 50% pump 93 in the gas tank as well.
I tried it richer and it slowed down, a lot. I tried 100% M1 and it did well. I also tried 50%/50% M1 to H20, but the highest MPH came when using a little bit of water in there with it.
12-29-2013, 01:43 AM
#62
TECH Apprentice
Ripped from C5 Forum.
Twin Turbo, No I/C, Straight Methanol, 44psi, 10:1, 2900HP.
http://www.highperformancepontiac.co...410pon_butler/
Twin Turbo, No I/C, Straight Methanol, 44psi, 10:1, 2900HP.
http://www.highperformancepontiac.co...410pon_butler/
the bsfc was 1.5 ish
or more like 3.3-3.5 :1 a/f
cheers
12-29-2013, 01:48 AM
#63
TECH Apprentice
have seen that, good reading. i think if you are running 100% of either fuel like was said above just keep the lambdaover 1.4 , and if you're using an alcohol scaled meter keep it 3.3-3.5xish.
that is because the bsfc for each is different, when you mix them i 'think' you need to make an adjustment to the target. havent spent any time on it yet.. it will probably come out the same as my first calculator.
that is because the bsfc for each is different, when you mix them i 'think' you need to make an adjustment to the target. havent spent any time on it yet.. it will probably come out the same as my first calculator.
all good, I realize that post was 2005
happy new year, cheers
