Air Fuel Ratio
07-25-2009, 09:32 PM
#63
i had a discussion about the afr's for nitrous a while back and found that if your running in the 11s ,spraying, it is unnecessary to be that rich. i have leaned up mine and can vouch for the dependability and power increase. here is the thread; https://www.performancetrucks.net/fo...&highlight=afr
07-27-2009, 10:59 AM
#64
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Mis-read your question, you wanted to see his power figures before and after. I just typed down why.
01-26-2018, 04:25 AM
#65
bump
I am LSA supercharger with 10.5 PSI or so cruising I read 14.6 and 10.9 deep in boost with no load. on a stock 5.3L 65K miles
What AF should I aim for towing from 1800 ft above sea lever to 12,000 feet? in 110 degree summer heat?
I live in phoenix and Camp in the Flagstaff 2 weekends a month in the summer.
what about timing? 18* or higher on 91 octane?
I am LSA supercharger with 10.5 PSI or so cruising I read 14.6 and 10.9 deep in boost with no load. on a stock 5.3L 65K miles
What AF should I aim for towing from 1800 ft above sea lever to 12,000 feet? in 110 degree summer heat?
I live in phoenix and Camp in the Flagstaff 2 weekends a month in the summer.
what about timing? 18* or higher on 91 octane?
01-26-2018, 06:39 PM
#66
10.9 is rich but safe. Going lean to 11.3-11.5ish would likely make more power.
Timing is a complete toss up but the lower the better for extended periods of boost. Anywhere from 13-16 seems to do alright but this is where watching for knock and stuff like that is key.
Timing is a complete toss up but the lower the better for extended periods of boost. Anywhere from 13-16 seems to do alright but this is where watching for knock and stuff like that is key.
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12-07-2023, 06:08 PM
#67
Registered User
It has been found experimentally that the ideal mixture, the one where these two elements are perfectly balanced is 14.7:1 by weight, i.e. 14.7grams of air and 1gram of fuel. Or 14.7lbs of air and 1lb of fuel. This is called 'stoichiometric', meaning in Greek measure of the elements.
here read this it may help i read it its long but you might learn something lol.
here read this it may help i read it its long but you might learn something lol.
Also it should be mentioned that it is also equal to 100 kpa.
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12-07-2023, 06:55 PM
#69
TECH Fanatic
Baffles me they miss posts dates as well….
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12-07-2023, 08:04 PM
#70
TECH Junkie
Join date March 1986 is wild
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