Archives: Bob’s Blog

Bob’s blog.

Is ignition timing the first thing a tuner should dial in?

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 […]

‘How-to’ fuel injection jetting videos

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 […]

Free Air Density Tuning Info: IHRA Keystone Raceway Park

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/  

Low Cost 1,200 & 1,500 HP Blown Alcohol Racing Engine Combo’s

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 […]

NHRA Nostalgia Drag Racing March Meet Bakersfield

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. […]

USAC West Coast Sprint Season Feb. 27-28

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 […]