Archives: Nitromethane

Impulsing the fuel injection fuel curve

We are seeing racers from time to time who open and close a fuel injection bypass to pulse the fuel curve.  According to our numerical analysis of air to fuel ratios from our ProCalc fuel injection calculator, bypass jet sizes much bigger than 0.050 inches are too large if they are shut off or on […]

10% nitro success

A few weeks ago, one of the drag racers completed competition with a bracket blown alcohol 7.60 second ET setup. It was close to maxed out with a small 0.040 inch main bypass jet in his fuel injection setup. The main bypass jet is used to return excess fuel to the fuel tank. In this […]

Surfers ’60s Top Fuel Dragster

Over a short but significant period in US Top Fuel drag racing history, the Surfers Team set record level performance. The Surfers Team was made up of owners/builders/tuners, Bob Skinner & Tom Jobe with driver/crew member, Mike Sorokin. Their nitro Chrysler (early) Hemi dragster quickly became one the sport’s best performers. Highlights of their setup […]

Nitro News circa 1984

On board data recording began. Gary Beck reported the following specs in Pro Top Fuel drag racing: – 0 to 100 MPH in a little over 1.2 seconds – 0 to 200 MPH in a little over 3.8 seconds – max acceleration of 4 g’s – max engine speed of almost 9,000 RPM. Quarter mile […]

Nitro History Analysis

We found some interesting nitro stats in a recent racing history search. Art Malone was one of the frontrunners in the mid 1960’s in Top Fuel drag racing. Note the following: Engine: Early Model Hemi 398 ci Blower: Roots 6-71 @ 18% OD Fuel injection hat: Hilborn Bugcatcher (4 hole front) Fuel pump: Hilborn 12.5 […]

Jetting for Turbocharged Engines, Rotary Engines, & Other Fuels

Recently we set up procedures using Pro-Calc to determine nozzles & jetting for turbocharged racing engines with mechanical fuel injection. In addition, we set up procedures using Pro-Calc to determine nozzles & jetting for rotary racing engines with mechanical fuel injection. We are currently setting up procedures using Pro-Calc to determine nozzles & jetting for […]