Quote:
Originally Posted by Jeff Higgins
The biggest problem, as our intrepid hot-rodders in the above video discovered, is getting enough nitro into the motor. They wound up running the injectors at well over 100% duty cycle, and still couldn't get enough fuel into it. The stoichiometric ratio for nitro and air is only 1.7:1, compared to gasoline's 14.5:1. That's why Top Fuel motors burn about 1 1/2 gallons of fuel per second. It also needs a lot of timing. I remember setting full advance at over 60 degrees on the funny car I helped out with very briefly in the late '80's to early '90's.
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42 fuel nozzles shoot out over 1 1/2 gallons a second. 500 PSI.