Porting Calculator V4.2.2 Site

Users can easily switch between PSI/HP and BAR/kW for global compatibility. How to Use Porting Calculator V4.2.2 (Workflow)

Smoother Transitions: Announcing Porting Calculator V4.2.2

Before opening the calculator, gather your foundational engine metrics. You will need: Bore and stroke dimensions. Connecting rod length (center-to-center). Target RPM range (where you want peak horsepower to occur). Current valve or port dimensions. Step 2: Input Data and Define Targets Porting Calculator V4.2.2

Create a sandbox that mimics the original runtime (e.g., a Windows 7 VM, or a Debian 9 container). Run V4.2.2 under a system call tracer:

Enter a target timing (e.g., 185° exhaust for high RPM) to see exactly how many millimeters you need to raise the port roof. Users can easily switch between PSI/HP and BAR/kW

Once your calculated port shapes match the target velocity curves, save your profile. Print out the blueprint dimensions or export the coordinates into your CNC milling software or use them to create physical porting templates for manual grinding. 4. Porting Best Practices with V4.2.2

View the calculated MCSA output. This is the tightest restriction in your port, usually located right before the valve throat. The software will display this value in square inches or square millimeters. Step 4: Transfer Dimensions to the Cylinder Head Connecting rod length (center-to-center)

Aim for 280 to 300 fps for high-RPM power.

Completed port designs can be saved as high‑resolution PNG images (96 to 600 pixels/inch). At 96 dpi, the image prints at actual scale, allowing it to be cut out and used directly as a guide for grinding ports.

: Relates port size to the time the port is open at a given RPM. Angle-Area : Focuses on the physical area available for gas flow.

: You can calculate port heights from durations or vice versa. Inputs are typically shown in green, while calculated outputs are displayed in red.