Home > Downloads/Tech > Fuel Calculators
Fuel
           
Calculate Street Carburetor CFM     Convert LPH to GPH (US)  
Engine Displacement (CI)
Enter CI Displacement
  LPH
Enter LPH
 
Maximum RPM
Enter Maximum RPM
  GPH >>>  
Minimum Carb Size >>>    
    Convert GPH (US) to LPH  
Calculate Race Carburetor CFM     GPH
Enter GPH
 
Engine Displacement (CI)
Enter CI Displacement
  LPH >>>  
Maximum RPM
Enter Maximum RPM
 
Minimum Carb Size >>>   Convert lb/hr to cc/min  
  lb/hr
Enter lb/hr
 
Calculate Injector Size   cc/min >>>  
Engine HP
Enter Engine HP
 
BSFC (see below)
Enter BSFC See Chart
  Convert cc/min to lb/hr  
Number of Injectors
Enter Number of Injectors
  cc/min
Enter cc/min
 
Injector Size >>>   lb/hr >>>  
If BSFC unknown:    
Use 0.45 to 0.55 for Naturally Aspirated   Convert GPH (US) to lb/hr  
Use 0.5 to 0.6 for Nitrous Applications     GPH (US)
Enter GPH
 
Use 0.6 to 0.75 for Turbo/Supercharged     lb/hr >>>  
   
Calculate Injector HP Rating   Convert lb/hr to GPH (US)  
Injector Size (lb/hr)
Enter Injector lb/hr
  lb/hr
Enter lb/hr
 
Number of Injectors
Enter Number of Injectors
  GPH (US) >>>  
BSFC (see below)
Enter BSFC See Chart
 
Engine HP >>>  
If BSFC unknown:  
Use 0.45 to 0.55 for Naturally Aspirated  
Use 0.5 to 0.6 for Nitrous Applications  
Use 0.6 to 0.75 for Turbo/Supercharged  
   
Calculate Fuel Volume Requirement  
Engine HP
Enter Engine HP
 
BSFC (see below)
Enter BSFC See Chart
 
Required LPH >>>  
Required (US) GPH >>>  
If BSFC unknown:  
Use 0.45 to 0.55 for Naturally Aspirated  
Use 0.5 to 0.6 for Nitrous Applications  
Use 0.6 to 0.75 for Turbo/Supercharged