Open Porting Calculator V4.2.2. Input your bore, stroke, and rod length into the engine configuration panel. Enter your stock port measurements to view your current port durations. Step 3: Target Setting
: Examine the calculated outputs displayed in red, including mean area values, power estimates, and other performance metrics. Porting Calculator V4.2.2
: Features a CAD window where users can drag cursors to set port positions and widths, with real-time updates to mean area values. How to Use the Software Open Porting Calculator V4
Engine porting is the definitive path to unlocking hidden horsepower. By modifying the intake and exhaust ports, you directly improve the volumetric efficiency of an internal combustion engine. However, guessing your port shapes or relying on trial-and-error often leads to ruined cylinder heads and lost velocity. Step 3: Target Setting : Examine the calculated
based on the current timing and target RPM, ensuring the engine can "breathe" sufficiently at high speeds.
: Addresses scaling and data-export compatibility with modern operating systems and data logging software formats like CSV and Excel.
Version 4.2.2 includes safety warnings regarding maximum exhaust width. Exceeding 65% to 70% of the bore diameter in chordal width risks letting the piston ring bulge into the port, causing catastrophic engine failure. Best Practices for Physical Porting