Optimum Air/Fuel Ratio for Supercharged Motors
05-10-2007, 02:07 PM
#31
Geronimo36
Gold Member
The majority of the engines we build are supercharged. Alot of builders like to run conservative A/F ratios, usually 12.0-12.5:1. I personally through our in house dyno tuning find that ratios of 12.9 (being the richest) and 13.3:1 will make more horsepower. The most important thing to remember when tuning for maxium horsepower, that will be reliable is that the boat has the correct fuel delivery system to supply the engine. Carb or EFI engines both need fuel curves which are ramped properly.
Dean
Dean
Your thoughts?
05-10-2007, 09:06 PM
#32
Registered
HC I just ordered the LMI with auxbox today. Hopefully it will be an easy user friendly deal. (I am not holdin my breath) Ill let you know how it works. We are gonna do 2 procharged carb boats,1 EFI 502 procharger, 2 volkswagen Fours (air cooled) with turbos to get em right. I hope.
05-12-2007, 05:02 PM
#35
Banned
Your absolutely correct. You will have to run more jetting due to the burn rate of the fuel.
05-13-2007, 05:19 AM
#36
Registered
Panther,
Your absolutely correct. You will have to run more jetting due to the burn rate of the fuel.
Your absolutely correct. You will have to run more jetting due to the burn rate of the fuel.
05-15-2007, 03:57 PM
#38
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Hell Yeah! I always said That I would gladly buy a new one if I neded to!! Thanks for your valuable assistance Jim. Those heads certainly work as good as they look!! I'm going to try the boat again this weekend w/ a 34 Bravo one to see how much further I can push the envelope. I'll report back with the results.
