is a specialized 2-stroke engine simulation software used by enthusiasts to optimize cylinder porting for performance. It calculates port heights, durations, and mean areas to predict engine power characteristics. 1. Getting Started
Porting Calculator V4.2.2 is a specialized engineering software designed for two-stroke engine enthusiasts and tuners to calculate porting specifications with high precision. Developed by porting-programs.com Porting Calculator V4.2.2
Have you ported a piece of legacy software recently? Share your own dependency graph horror stories in the comments below. Or, if you need assistance with a specific error in V4.2.2's inline assembly, contact the author. is a specialized 2-stroke engine simulation software used
: You can use the Save PNG button in the CAD window to export images of your port designs for printing or reference. Getting Started Porting Calculator V4
While this isn't a total rewrite from the ground up, V4.2.2 represents a significant focus on stability, speed, and quality-of-life improvements based directly on community feedback. It’s the "smoothest" version we’ve released yet.
As always, if you encounter any issues or have feature requests for V4.3, drop us a line in the [Forns/Discord/GitHub Issues].
Based on your porting and target RPM, the program suggests an ideal carburetor bore size. 5. Where to Access