Books and Information for racers
Bob’s blog.
For a new setup, a conservative ignition timing value should be the first thing a tuner should dial in. Other setups, including the fuel system and the chassis, should be optimized before the timing is extended beyond a conservative value for more performance. The amount of timing depends on the strength of the ignition. For […]
Video: How to set up fuel injection jetting in a ProCalc calculator A baseline is the default jetting setup. It is the starting point for tuning for air density changes at a subsequent race. It may also be the starting point for a new FI setup. ProCalc provides an easily retrievable record for precise numerical […]
Combustion is between oxygen and fuel. The ratio of the two determines whether a mixture is best horsepower, best torque, rich, moderate, or lean. Air to fuel ratio (AFR), the basis for tuning with ProCalc, combines the weight of the air and the weight of the fuel. The air is only 23% oxygen by weight. […]
link to IHRA 1/8th mile drag racing at Keystone Raceway Park, New Alexandria, PA, June 7-9: map location, track elevation, air density, density altitude, grains, forecast, historic, & metric data for “good spark plug readings”: https://airdensityonline.com/track-results/Keystone_Raceway_Park/
link to NHRA National Event Drag Racing, Chicago, May 30-June 2: air density, density altitude, grains, forecast, historic, & metric data “for good spark plug readings”: https://airdensityonline.com/track-r…te_66_Raceway/
Event: Indianapolis 500 practice: May 14-17, 2019 Indianapolis 500 qualifying: Sat May 18, Sun May 19 Indianapolis 500 practice: Mon May 20 Indy 500 Miller Lite Carb Day: Fri May 24 Indy 500 Firestone Legends Day: Sat May 25 103rd running of the Indianapolis 500 high speed circle race: Sun May 26 links: current imperial […]
Getting Day Old and Past Air Density Data for Tuning After numerous requests, historic air density data was added to the track listed in airdensityonline.com. Now race tuners can retrieve past air density data for race tracks and courses all over the world. Here is an example of one of 23 racing facilities listed for […]
Disclaimer: All of the following engine profiles cannot be guaranteed to work adequately right out of the box. In any of these engine profiles, jetting combinations were determined from similar running engine profiles previously analyzed with ProCalc. Spark plug readings and engine temperature measurements are needed from incremental runs to determine if jetting adjustments from […]
Read those drag racing spark plugs for good air density tuning at the http://aaafamosoraceway.com/; Mar 7-10, 2019. Check https://airdensityonline.com/track-results/Bakersfield_Speedway/ for current air density, density altitude, water grains, temperature, humidity, uncorrected barometer, wind speed, wind direction, dew point, saturation pressure, vapor pressure in imperial or metric units. Check https://airdensityonline.com/track-history/Bakersfield_Speedway/ for yesterday’s record already determined in air density units. […]
Check airdensityonline weather, las vegas for yesterday, current, and forecast air density for tuning; track map; elevation; water grains; wind direction; wind speed; weather forecast; data displayed in Imperial or metric units; air density data valuable for racers without portable weather stations; for racers with portable weather stations, data valuable for re-calibration, especially after a […]