MOTORUN ENGINE TOOLS PRO: Advanced 4-Stroke and 2-Stroke Engine Calculator

This comprehensive tool is designed to streamline and simplify the complex calculations involved in modifying both 4-stroke and 2-stroke engines. It's an invaluable resource for enthusiasts in the motorbike racing community as well as for everyday users seeking to enhance their engine's performance.

Features of the 4-Stroke Calculator:

Engine Volume Analysis
Camshaft Optimization:
Duration Adjustments
Lobe Separation Angle (LSA)
Overlap Tuning
Polish Porting Techniques:
For 2-Valve Engines (Methods 1 and 2)
For 4-Valve Engines
Valve Adjustments:
Lift Settings
Diameter Specifications
Shim Selection Guide
Compression Ratio Calculations:
Static Ratio
Dynamic Ratio
Effective Stroke Determination
Piston Speed Analysis
Safe RPM Limits for Engine Longevity
Carburetor Tuning:
4-Stroke Ventures
Ideal Size Determination (Methods 1 and 2)
Reamer Usage
Racing Exhaust (Knalpot Racing) Configurations
Acceleration and Top Speed Potential:
Estimation of Top Speed
Wheel Outer Diameter Impact
Final Gear Ratio Effects
Estimation of Potential Torque and Power (DK)
Features of the 2-Stroke Calculator:

Engine Volume Capacity Analysis
Compression Ratio Calculations:
Compression Ratio
Fuel Mixture Ratio
Clearance Settings:
Deck Clearance
Piston Clearance
Piston Ring Gap
Head Squish Adjustments:
Angle Settings
Width Measurements
Engine Timing and Duration:
Inlet
Exhaust
Transfer
Porting Techniques
Piston Speed Analysis
Safe Engine Rotation Speed Limits
Carburetor Size Optimization
Acceleration and Top Speed Potential:
Estimation of Top Speed
Wheel Outer Diameter Impact
Final Gear Ratio Effects