Archives: Tips and Tricks

Tips and tricks from Bob.

Recent articles

Recently Bob and Jennifer contributed content for an online publication. The amount of information they needed was minimal but Bob and Jennifer decided to expand on the content and provide it for anyone who might benefit. Key elements to engine tuning Optimum Air/Fuel Ratio in drag racing Is Ignition Timing the First Thing to Dial […]

Key Elements to Engine Tuning

Key elements for drag race engine tuning are having a well-tested fuel system setup, tracking the weather for changes in the amount of oxygen in the atmosphere, and properly adjusting the engine for the current climate. One element specific to mechanical fuel injection tuning is idle adjustment for a good starting line temperature. Engine oil […]

Is it still important to read spark plugs and what’s the best method of doing so

Spark plug discolorations after a run are an accumulative indication of engine temperature.  The spark plug plating discolorations after a run indicate the portion of the spark plug that experienced higher temperature somewhere on that run.  Spark plug readings are most effective when a strong baseline is developed.  If spark plugs are not discolored after […]

What’s the best way for a racer using a carburetor to optimize engine performance?

Testing for maximum 60 foot performance should be done first.  Jetting, accelerator pump, transition circuits, float level, and/or fuel pressure adjustments should be done for this first phase of drag racing performance.  After carburetor adjustments are done to optimize the 60 foot time, then further adjustments can be done for mid-range and high-end performance. Specific […]

Optimum Air/fuel ratio

Is there an optimal air/fuel ratio for drag racing engines? While air/fuel ratio is important for fuel system management, there is no one optimum air/fuel ratio.  These depend on engine type, fuel type, and engine modifications.  Below are examples of some optimum air/fuel ratios for specific drag racing engine examples: engine induction fuel air/fuel ratio […]

Indy 500 Free Hourly Air Density Tuning Data: testing, qualifying, raceday

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 […]