Jerry Gleason’s fuel injected Big Block drag race boat set the latest (at the time) APBA unblown fuel record at 130 MPH. That was done on 30% nitro (Ref. HRM, April, 1968, p. 107). Keep in mind that was with typical OEM Big Block cylinder heads and block. It was with cam lift and timing, […]
… by Experience & Gut Feel Throughout the racing community, experience and gut feel are the most common methods for the selection of nozzle and jet size numbers for setup and tuning of mechanical fuel injection. It is a form of iteration or ‘connecting the dots’. Given enough time and expense, experience from good and […]
Throughout our publications, air intake and fuel delivery values are converted to a ‘uniform standard of units’. That is “pounds per revolution”. The tuning demands for weight of air and weight of fuel become easy to understand, record, and analyze with that numerical value. And easy to change in fine tuning increments with this simple […]
In our drag racing, we did use air to fuel ratio as a controlled value to get the engine into a linear range. That task is an extensive explanation through out writings. The linear range is where the engine is completely predictable. We achieved that very well in our racing.