Water/Methanol Injection System Flow Calculator

Cool Runnings Engineering

Water/Methanol Injection System Calculator

Please enter a value between 300 and 2000 HP
Valid range: 300-2000 HP
Select your injection fluid composition

Calculation Method

  • Base flow calculated from mixture ratio
  • 15% added for system losses
  • 5% added for headroom
  • Total multiplier: 1.2075
Common: 1 jet per cylinder for direct port injection

Jet Distribution Guide

  • Direct port: Use 1 jet per cylinder
  • Multi-nozzle: Distribute evenly in intake path
  • Staged systems: Multiple jets per cylinder
  • Ensure equal flow distribution for best results