Racing Downloads and Software

Port Velocity Limit Calculator screen shotPort Velocity Limit Calculator

(1) Program (.exe)
Calculates your port velocity in feet per second and mach speed. A good baseline max is .55 mach. In other words, 55% of the speed of sound. As port velocities go higher, funny things can start to happen.
  • Input: Piston Bore Diameter
  • Input: Stoke Length
  • Input: RPM at Peak HP
  • Input: Port Cross-Sectional Area
  • Output: Port Limiting Velocity
  • Output: Mach Speed

Runs on all versions of Microsoft Windows

Part of the "Engine Pack" collection of programs.